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COVId-19 Vaccination Status and Severe Outcomes among Patients Hospitalized for COVId-19 in West Africa, Togo, 2021

Advances in Infectious diseases 2024年第1期14卷 87-104页

作者： Awèréou Kotosso Yao Rodion Konu Lidaw déassoua Bawe Sarakawabalo Assenouwe Yawovi Mawufemo Tsevi Koffi Atsu Aziagbe Akouda Akessiwe Patassi Bawoubadi Abaltou Gnimdou Tchamdja lampouguini Nebona Komi Séraphin Adjoh didier Ekouevi Majesté Ihou Wateba Faculté des Sciences de la Santé Université de Lomé Lomé Togo centre Hospitalier Régional Lomé Commune Lomé Togo Service des Maladies Infectieuses Centre Hospitalier Universitaire Sylvanus-Olympio Lomé Togo Unité de recherche Mixte 1219 Bordeaux Population Health Centre University of Bordeaux National Institute for Health and Medical Research (INSERM) Research Institute for Sustainable Development (IRD) Bordeaux France département de Santé Publique Université de Lomé Lomé Togo Faculté des Sciences de la Santé Université de Kara Kara Togo Service d’Anesthésie et Réanimation Centre Hospitalier Universitaire Kara Kara Togo Service de Néphrologie et d’Hémodialyse Centre Hospitalier Universitaire Sylvanus-Olympio Lomé Togo Service de Pneumo-Phtisiologie Centre Hospitalier Universitaire Sylvanus-Olympio Lomé Togo

Objectives: More than a year after its introduction, COVId-19 vaccination coverage was low in the Togolese population and little data were available on its benefits for hospitalized patients. this study aimed to describe the impact of COVId-19 vaccination on the prognosis of hospitalized patients. Methods: this was a retrospective cohort study of patients admitted to the centre Hospitalier Régional Lomé Commune (Togo) between June 1, 2021 and May 31, 2022. Primary outcomes (admission to the intensive care unit and death) were presented with frequency and proportion. Mortality rates were presented by sociodemographic and clinical characteristics and compared by appropriate statistical tests. Factors associated with inpatient death were described by performing a Cox proportional hazard regression. Results: A total of 604 patients were hospitalized (50.0% women). the mean age was 54.03 ±17.1 years. Only 55 patients were fully vaccinated (9.1%). ICU admission was significantly more frequent in unvaccinated patients than in vaccinated ones (63.0% vs. 38.2%;p Conclusion: COVId-19 vaccination had a significant benefit for patients with COVId-19 infection in terms of reducing the risk of death. Based on real-world data from sub-Saharan Africa, this information can help optimize the benefit of COVId-19 vaccination by raising community awareness and increasing vaccine coverage while reducing hesitancy.

关键词： COVId-19 Vaccination Prognosis Mortality Sub-Saharan Africa

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Sexual Assault and Its Psychopathological Repercussions in the Life of Female Students in Northeastern Benin (2023)

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Open Journal of Psychiatry 2024年第3期14卷 163-178页

作者： Ireti Nethania Elie Ataigba djibrilla Moussa Oumou Ousseyni Zika Fidélia dotou Coovi Ignace Tokpanoude Anselme djidonou djibo douma Maiga Francis Tognon Tchegnonsi Prosper Gandaho Josiane Ezin Houngbe Faculté de Médecine & Institut de Formation en Soins Infirmiers et Obstétricaux Université de Parakou Parakou Bénin Service de Psychiatrie Départemental du Borgou Alibori Centre Hospitalier Universitaire Parakou Bénin Organisation Non Gouvernementale de Soutien de Réhabilitation d’Insertion et de Réinsertion (SouRIR ONG) Parakou Bénin Faculté des Sciences de la Santé Université André Salifou de Zinder Zinder Niger Service de Psychiatrie H?pital National de Zinder Zinder Niger Faculté des Sciences de la Santé Université Abdou Moumouni de Niamey Niamey Niger Service de Psychiatrie H?pital National de Niamey Niamey Niger Faculté des Sciences de la Santé de Cotonou Université d’Abomey-Calavi Abomey-Calavi Bénin Service de Psychiatrie Centre National Hospitalier Universitaire - Hubert Koutoucou Maga de Cotonou Cotonou Bénin

Objective: the aim of the present study was to investigate the psychic repercussions of sexual assault among female students in Parakou in 2023. Methods: descriptive cross-sectional study conducted from december 2022 to July 2023 among all students at the University of Parakou. the sampling technique was stratified non-proportional at two levels. the dependent variable was self-reported sexual assault. the psychopathological repercussions linked to sexual assault and explored in these students were: post-traumatic stress disorder assessed with the Post Traumatic Stress disorder Checklist-5 (PCL-5) scale;and current depression screened with the Patient Health Questionnaire-9 (PHQ-9) scale. Results: A total of 376 female students from the University of Parakou meeting the inclusion criteria were surveyed. the average age of the subjects surveyed was 20.56 ± 2.46 years, with extremes of 16 and 32 years. A predominance of subjects under 25 was observed. the prevalence of sexual assault among female students at the University of Parakou was 10.63%. the types of aggression suffered were mostly rape (18 people;45%) and sexual touching (16 people;40%), and the aggressors were mainly friends/boyfriends (13;32.5%), family members (12;30.0%) and people from the house/neighborhood (9;22.5%). Psychological repercussions included depression in 72.5% (29) of cases, with mild depression in 30% (12), moderate depression in 37.5% (15) and severe depression in 5% (2). Anxiety disorders were present in 27.50% (11) of victims. the risk factors associated with sexual assault in these students were gravidity (p = 0.014;OR = 15.32), unhappy life events (p = 0.01;OR = 17.24), and age of first sexual intercourse (p = 0.016;OR = 4.608). Conclusion: One in ten female students in Parakou has been sexually assaulted. Once again, preventive action through effective sex education is a means of fighting the problem that should be prioritized for every girl and boy from an early age. Psychological s

关键词： Sexual Assault Psychopathological Repercussions Benin 2023

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Molecular Identification of Mycobacterium Strains Responsible of Bovine Tuberculosis Cases in Bobo-dioulasso Slaughterhouse, Burkina Faso

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Advances in Microbiology 2024年第2期14卷 105-114页

作者： Mariétou Konate Aminata Fofana^# Yacouba Kouadima Aboubacar Sidiki Ouattara Adama Sanou UFR/Sciences et Techniques Universit&eacute Catholique de l’Afrique de l’Ouest Unit&eacute Universitaire &agrave Bobo (UCAO/UUB) Bobo-Dioulasso Burkina Faso departement Biomé dical et Sant&eacute Publique (BioMed/SP) Institut de Recherche en Sciences de la Sant&eacute (IRSS) Bobo-Dioulasso Burkina Faso departement de Biochimie-Microbiologie UFR Sciences de la Vie et de la Terre Universit&eacute Nazi BONI Bobo-Dioulasso Burkina Faso centre de recherche en Sciences Biologiques Alimentaires et Nutritionnelles (CRSBAN) Universit&eacute Joseph KI-ZERBO Ouagadougou Burkina Faso laboratoire de Mycobacté riologie Centre MURAZ Institut National de Sant&eacute Publique Bobo-Dioulasso Burkina Faso

Bovine tuberculosis (bTB) is an endemic zoonosis significantly affects animal health in Burkina Faso. the primary causative agent is Mycobacterium tuberculosis (M. tuberculosis) complex, mainly M. bovis. Cattle are considered as natural reservoir of M. bovis. However, in Burkina Faso, the circulation of these strains remains poorly understood and documented. this study aimed to identify and characterize Mycobacterium strains from suspected carcasses during routine meat inspection at Bobo-dioulasso refrigerated slaughterhouse. A prospective cross-sectional study was conducted from January 2021 to december 2022 on cases of seizures linked to suspected bovine tuberculosis. Microbiological and molecular analyzes were used for mycobacterial strain isolation and characterization. Out of 50 samples, 24% tested positive by microscopy and 12% by culture. Molecular analysis identified 6 strains of Mycobacteria, exclusively Mycobacterium bovis specifically the subspecies bovis (Mycobacterium bovis subsp bovis). In conclusion, M. bovis subsp bovis is the primary agent responsible for bovine tuberculosis in Bobo-dioulasso. Continuous monitoring of mycobacterial strains is therefore necessary for the effective control of this pathology in the local cattle population.

关键词： Bovine Tuberculosis Mycobacterium bovis Molecular Identification Cattle Population Burkina Faso

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Multivariate Approach to Characterizing Soil Quality of Gabonese’s Ferralitic Soils

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Open Journal of Soil Science 2024年第4期14卷 237-268页

作者： Neil-Yohan Musadji Rolf Gaël Mabicka Obame Michel Mbina Mounguengui Jean Aubin Ondo Lydie-Stella Koutika Eric Ravire Claude Geffroy laboratoire de Chimie Des Milieux et Des Mat&#233riaux Inorganiques Laboratoire D&#8217Analyse Des Sols et Environnement D&#233partement Des Sciences Fondamentales De L&#8217Ing&#233nieur Institut National D&#8217Agronomie et De Biotechnologies Universit&#233 Des Sciences et Techniques De Masuku Franceville Gabon Institut de Chimie des Milieux et Maté riaux De Poitiers (IC2MP) Universit&#233 De Poitiers Poitiers France laboratoire de Chimie Des Milieux et Des Mat&#233riaux Inorganiques Laboratoire D&#8217Analyse Des Sols et Environnement D&#233partement De Phytotechnologie Institut National D&#8217Agronomie et De Biotechnologies Universit&#233 Des Sciences et Techniques De Masuku Franceville Gabon dé partement De G&#233ologie Facult&#233 Des Sciences Universit&#233 Des Sciences et Techniques De Masuku Franceville Gabon laboratoire Pluridisciplinaire des Sciences Ecole Normale Sup&#233rieure Libreville Gabon centre de recherche Sur la Productivité et La Durabilit&#233 Des Plantations Industrielles Pointe Noire Republic of Congo Sucaf Gabon Somdiaa Franceville Gabon

Assessing soil quality is essential for crop management and soil temporal changes. the present study aims to evaluate soil quality in the Ferralitic soils context countrywide. this assessment was done using multivariate soil quality indice (SQI) models, such as additive quality index (AQI), weighted quality indexes (WQIadd and WQIcom) and Nemoro quality index (NQI), applied to two approaches of indicator selection: total data set (TdS) and minimum data set (MdS). Physical and chemical soil indicators were extracted from the ORSTOM’s reports resulting from a sampling campaign in different provinces of Gabon. the TdS approach shows soil quality status according to eleven soil indicators extracted from the analysis of 1,059 samples from arable soil layer (0 - 30 cm depth). the results indicated that 87% of all provinces presented a very low soil quality (Q5) whatever the model. Among soil indicators, exchangeable K+ and Mg2+, bulk density and C/N ratio were retained in MdS, using principal component analysis (PCA). In the MdS approach, 50 to 63% of provinces had low soil quality grades with AQI, WQIadd and NQI, whereas the total was observed with WQIcom. Only 25% of provinces had medium soil quality grades with AQI and NQI models, while 12.5% (NQI) and 25% (AQI) presented high quality grades. Robust statistical analyses confirmed the accuracy and validation (0.80 r P ≤ 0.016) of AQI, WQIadd and NQI into the TdS and MdS approaches. the same sensitivity index value (1.53) was obtained with AQI and WQIadd. However, WQIadd was chosen as the best SQI model, according to its high linear regression value (R2 = 0.82) between TdS and MdS. this study has important implications in decision-making on monitoring, evaluation and sustainable management of Gabonese soils in a pedoclimatic context unfavorable to plant growth.

关键词： Gabon Ferralitic Soil Soil Indicators Standard Score Function Soil Quality Indices Sustainable Soil Soil Management

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Eating disorders among Students in Northern Benin (2023)

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Open Journal of Psychiatry 2024年第1期14卷 11-28页

作者： Ireti Nethania Elie Ataigba Guy Gérard Aza-Gnandji david Sinet Koïvogui Wifrieda Aguidissou Eurydice Elvire djossou Anselme djidonou Francis Tognon Tchegnonsi Prosper Gandaho Josiane Ezin Houngbe Institut de Formation en Soins Infirmiers et Obstétricaux Faculté de Médecine Université de Parakou Parakou Bénin Service de Psychiatrie Centre Hospitalier Universitaire Départemental du Borgou Alibori Parakou Bénin Organisation Non Gouvernementale de Soutien Réhabilitation Insertion et Réinsertion (SouRIR ONG) Parakou Bénin Faculté des Sciences de la Santé Université d’Abomey-Calavi Cotonou Bénin Service de Psychiatrie Centre National Hospitalier Universitaire Hubert Koutoucou Maga de Cotonou Cotonou Bénin Faculty of Health Sciences and Techniques Université Gamal Abdel Nasser de Conakry Conakry Guinée

Introduction: From their earliest hours, human beings are able to identify a source of food and to feed themselves. Feeding is therefore one of the most instinctive human functions. It is regulated by several factors (physiological, psycho-affective and environmental) whose disruption can lead to eating disorders. Objective: the aim of this study was to investigate eating disorders among students in the town of Parakou in 2023. Method: descriptive cross-sectional study conducted from January to July 2023 in various universities in the city of Parakou, Benin. the study population consisted of all students in grades 1 to 7 at these universities. A two-stage non-proportional stratified sampling technique combined with a simple random draw was adopted. the Eating Attitude Test-26, Bulimia Inventory Test Edinburgh and a set of questions focusing on the diagnostic criteria for pica were used to screen for pica and other disorders such as anorexia, bulimia nervosa and binge eating disorder. data were analyzed using SPSS (Statistical Package for Social Sciences) version 25. Results: A total of 607 students were surveyed, 323 of whom had eating disorders. A prevalence of 53.21% of students at risk of eating disorders was found. In relation to the total population, the prevalences of anorexia, bulimia nervosa, binge eating disorder and pica were 45.96%, 0.82%, 15.48% and 12.68% respectively. In multivariate analysis, seven factors explained the risk to develop at least one eating disorder among the students surveyed. these were: urban area of residence (OR (95% CI) = 5.059 (1.75 - 14.65);p = 0.003);year of study (OR (95% CI) = 0.47 (0.28 - 0.79);p = 0.035);type of university attended (private university: OR (95% CI) = 1.63 (1.08 - 2.44);p = 0.019);parents’ marital status (couple or not) (OR (95% CI) = 1.50 (1.01 - 2.24);p = 0.046);father’s level of education: secondary (OR (CI 95%) = 3.85 (1.96 - 7.54);p 0.001)/higher (OR (CI 95%) = 2.83 (1.36 - 5.86);p = 0.005);mother’s one:

关键词： Eating disorders Benin 2023

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Problematic Use of Video Games in Schools in Northern Benin (2023)

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Open Journal of Psychiatry 2024年第2期14卷 120-141页

作者： Ireti Nethania Elie Ataigba david Sinet Koivogui damega Wenkourama Marcos Tohou Eurydice Elvire djossou Anselme djidonou Francis Tognon Tchegnonsi Prosper Gandaho Josiane Ezin Houngbe Faculté de Médecine & Institut de Formation en Soins Infirmiers et Obstétricaux Université de Parakou Parakou Bénin Service de Psychiatrie Centre Hospitalier Universitaire Départemental du Borgou Alibori Parakou Bénin Organisation Non Gouvernementale de Soutien Réhabilitation Insertion et Réinsertion (SouRIR ONG) Parakou Bénin Faculté des Sciences et Techniques de Santé Université Gamal Abder Nasser de Conakry Conakry Guinée Faculté des Sciences de la Santé Université de Kara Kara Togo Service de Psychiatrie Centre Hospitalier Universitaire de Kara Kara Togo Facultés des Sciences de la Santé Université d’Abomey-Calavi Cotonou Bénin centre nationale Hospitalier Universitaire Hubert Koutoucou Maga de Cotonou Cotonou Bénin

Objective: To study the problematic use of video games among secondary school students in the city of Parakou in 2023. Methods: descriptive cross-sectional study conducted in the commune of Parakou from december 2022 to July 2023. the study population consisted of students regularly enrolled in public and private secondary schools in the city of Parakou for the 2022-2023 academic year. A two-stage non-proportional stratified sampling technique combined with simple random sampling was adopted. the Problem Video Game Playing (PVP) scale was used to assess problem gambling in the study population, while anxiety and depression were assessed using the Hospital Anxiety and depression Scale (HAdS). Results: A total of 1030 students were included. the mean age of the pupils surveyed was 15.06 ± 2.68 years, with extremes of 10 and 28 years. the [13 - 18] age group was the most represented, with a proportion of 59.6% (614) in the general population. Females predominated, at 52.8% (544), with a sex ratio of 0.89. the prevalence of problematic video game use was 24.9%, measured using the Video Game Playing scale. Associated factors were male gender (p = 0.005), pocket money under 10,000 cfa (p = 0.001) and between 20,000 - 90,000 cfa (p = 0.030), addictive family behavior (p d relationship with father (p = 0.020), organization of video game competitions (p = 0.001) and definite anxiety (p Conclusion: Substance-free addiction is struggling to attract the attention it deserves, as it did in its infancy everywhere else. this study complements existing data and serves as a reminder of the need to focus on this group of addictions, whose problematic use of video games remains the most frequent due to its accessibility and social tolerance. Preventive action combined with curative measures remains the most effective means of combating the problem at national level.

关键词： Gaming Problem Video Games Benin 2023

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Post-Traumatic Stress disorder among defence and Security Forces in Northern Benin (2023)

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Open Journal of Psychiatry 2024年第2期14卷 142-161页

作者： Ireti Nethania Elie Ataigba Guy Gérard Aza Gnandji david Sinet Koivogui dalmace Fauste Adjaho Eurydice Elvire djossou Anselme djidonou Francis Tognon Tchegnonsi Prosper Gandaho Josiane Ezin Houngbe Faculté de Médecine & Institut de Formation en Soins Infirmiers et Obstétricaux Université de Parakou Parakou Bénin Service de Psychiatrie Centre Hospitalier Universitaire Départemental du Borgou Alibori Parakou Bénin Organisation Non Gouvernementale de Soutien Réhabilitation Insertion et Réinsertion (SouRIR ONG) Parakou Bénin Faculté des Sciences de la Santé Université d’Abomey-Calavi Cotonou Bénin centre nationale Hospitalier Universitaire Hubert Koutoucou Maga de Cotonou Cotonou Bénin Faculté des Sciences et Techniques de Santé Université Gamal Abdel Nasser de Conakry Conakry Guinée

Introduction: Post-traumatic stress disorder (PTSd) is defined as “actual exposure to death or the threat of death, serious injury or sexual violence”, either directly or indirectly, resulting in a symptomatic procession of repetition, avoidance, neurovegetative hyperactivity and individualized symptoms, with or without negative cognitive and mood changes. It therefore goes without saying that the defence and security forces constitute a high-risk population in need of attention. Objective: To study post-traumatic stress disorder in defence and security forces in the city of Parakou in 2023. Methods: descriptive cross-sectional study conducted from december 2022 to July 2023. the study population consisted of active military, republican police and firefighters in the city of Parakou in 2023. Non-proportional stratified sampling was used, given the inaccessibility of the source population size for national security reasons. Post-traumatic stress disorder was assessed using the “post-traumatic stress disorder checklist-5 (PCLS-5) scale. Results: A total of 305 subjects participated in the survey. Males dominated 90.2%. the most represented corps was the Republican Police (41.6%), most of whom were non-commissioned officers (46.6%). the majority count between 11 and 20 years of service (48.9%), with 2 to 5 missions completed (67.5%). the calculated prevalence of post-traumatic stress disorder was 11.8%, based on the post-traumatic stress disorder checklist-5 (PCL-5). Of the 36 respondents with post-traumatic stress disorder, 20 (55.6%) had experienced an armed attack, 25 (69.4%) had witnessed a violent death, 18 (50.0%) had witnessed the agony of a colleague, 15 (41.7%) had been exposed to a fire or explosion, while 26 (72.2%) had been traumatized by physical and/or verbal aggression. 5 (13.9%) had consulted a specialist psychiatrist, while 6 (16.7%) were on medication and 26 (72.2%) used sport as a means of maintaining physical and mental health. Respectively 22 (61.1

关键词： Post-Traumatic Stress disorder Forces defence Security Benin 2023

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太平洋十年涛动对全球地表气温变化的影响足迹

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Science Bulletin 2024年第4期69卷 445-448页

作者：梁莉莉 Alan d.Ziegler 陈德亮 Philippe Ciais 李肇新梁时婧王大山徐荣嵘曾振中 School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhen 518055China Faculty of Fisheries Technology and Aquatic Resources Mae Jo UniversityChiang Mai 50000Thailand Regional Climate Group Department of Earth SciencesUniversity of GothenburgGothenburg 40530Sweden laboratoire des Sciences du Climat et de l’Environnement UniversitéParis-SaclayGif-sur-Yvette 91191France laboratoire de Météorologie dynamique Centre national de la recherche scientifiqueSorbonne UniversitéÉcole Normale SupérieureÉcole PolytechniqueParis 75000France Guangdong Provincial Key laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Sea surface temperature modes have been found to modulate anthropogenic global warming rates on annual and decadal timescales,sometimes leading to periods of“slowdown”despite increasing greenhouse gas emissions^([1]).

关键词：太平洋十年涛动地表气温 greenhouse

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Profile of Autoantibodies and Clinical Symptoms in Guinean Patients with Connective Tissue diseases

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Open Journal of Immunology 2024年第1期14卷 1-10页

作者： Mariama Sadjo diallo doufin Traore Adame diouf djiba Kaba Issiaga diallo doudou Georges Massar Niang Alimou Camara Oumar Mouctar diallo Boh Fanta diane Abdoulaye Barry Ouo-Ouo Yaramon Kolie Moustapha Mbow Aly Badra Kamissoko djibril Sylla Babacar Mbengue Mohamed Cisse Faculté des Sciences et Techniques de la Santé Université Gamal Abdel Nasser de Conakry Conakry Guinée laboratoire de Biologie Moléculaire Nestor BANGOURA/Helene laBROUSSE H&#244pital de jour Donka CHU Donka Conakry Guinée centre d’Excellence Africain Pour la Prévention et le Contrô le des Maladies Transmissibles Conakry Guinée laboratoire d’Immunologie Université Cheikh Anta Diop Dakar Sénégal Service de dermatologie-Vénérologie CHU Donka Conakry Guinée Service de Rhumatologie H&#244pital National Ignace Deen Conakry Guinée Service de Médecine Interne CHU Donka Conakry Guinée

Connective tissue diseases (CTds) are Autoimmune diseases (AIds) characterized by the appearance of autoantibodies, which are diagnostic markers. Investigations of these autoantibodies play a major role in the management of several autoimmune diseases. the objective of this study was to describe the profile of anti-ENA antibodies according to the clinical symptoms of mixed CTds in Conakry teaching Hospital. We performed a cross-sectional study during six months. A total of 20 patients was recruited and we measured antibodies using the ELISA technique. the mean age of our patients was 36.5 years, with a predominance of females. Cutaneous and rheumatological signs were the main clinical manifestations. SLP was the most frequent CTds;the threshold of ENA antibodies positivity was higher in scleroderma with and SLP. Anti-ENA identification reveals the frequency of anti-SSA (83.33%), anti-U1RNP (66.66%) and anti-histone (50%) antibodies. Antinuclear antibodies (ANA) react with various components of the cell nucleus. their detection is of major interest in the diagnosis of CTds. Our results highlight the importance of determining the specificity of these antibodies to guide differential diagnosis.

关键词： Autoantibodies Extractible Nuclear Antigen (ENA) Connective Tissue diseases ELISA

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Effects of soil metal(loid)s pollution on microbial activities and environmental risks in an abandoned chemical smelting site

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Journal of Environmental Sciences 2024年第9期143卷 60-70页

作者： Hao Li Jun Yao Jianli Liu Ning Min Geoffrey Sunahara dongyang Men Robert duran School of Water Resources and Environment Research Center of Environmental Science and EngineeringChina University of Geosciences(Beijing)Beijing 100083China department of Natural Resource Sciences McGill University21111Lakeshore DriveSte-Anne-de-BellevueQuebecH9X 3V9Canada Equipe Environnement et Microbiologie MELODY groupUniversitéde Pau et des Pays de l’AdourE2S-UPPAIPREM UMR CNRS 5254BP 115564013 Pau CedexFrance

Abandoned chemical smelting sites containing toxic substances can seriously threaten and pose a risk to the surrounding ecological *** samples were collected from different depths(0 to 13 m)and analyzed for metal(loid)s content and fractionation,as well as microbial *** potential ecological risk indices for the different soil depths(ordered from high to low)were:1 m(d-1)>surface(S-0)>5 m(d-5)>13 m(d-13)>9 m(d-9),ranging between 1840.65-13,089.62,and representing extremely high environmental risks,of which Cd(and probably not arsenic)contributed to the highest environmental risk.A modified combined pollution risk index(MCR)combining total content and mobile proportion of metal(loid)s,and relative toxicities,was used to evaluate the degree of contamination and potential environmental *** the near-surface samples(S-0 and d-1 layers),the MCR considered that As,Cd,Pb,Sb,and Zn achieved high and alarming degrees of contamination,whereas Fe,Mn,and Ti were negligible or low to moderate pollution *** microcalorimetry and enzymatic activity measurements of contaminated soil samples were used to assess the microbial metabolic activity *** analysis elucidated the relationship between metal(loid)s exchangeable fraction or content and microbial activity characteristics(pthe microbial metabolic activity in the d-1 layer was low presumably due to heavy metal *** activity indicators and microcalorimetric growth rate(k)measurements were considered sensitive indicators to reflect the soil microbial activities in abandoned chemical smelting sites.

关键词： Abandoned chemical smelting sites Microbial activities Modified combined pollution risk Microcalorimetry Enzymatic activities

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