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Qualitative Assessment and Typology of the Water Resource Used for the Production of Drinking Water in Duékoué, Western Côte d’Ivoire

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Journal of Geoscience and Environment Protection 2019年第5期7卷 212-231页

作者： Kouamé Kouakou Benoit konan Kouakou Séraphin Attoungbre Kouakou Severin konan koffi félix Boussou koffi Charles Kouamé Kouamé Martin Laboratory of Geosciences and Environment University Jean Lorougnon Guédé Daloa C&#244 te d’Ivoire Laboratory of Ecology Biodiversity and Evolution University Jean Lorougnon Guédé Daloa C&#244 te d’Ivoire

The objective of this study was to evaluate the typology of water through physicochemical and bacteriological characterization with the aim of highlighting its vulnerability as a drinking water resource. The methodology adopted was to evaluate the level of pollution by monitoring the spatiotemporal variation of the water pollution indicator levels of Lake Dohou. The sampling frequency is monthly for one year, from November 2017 to October 2018, in order to obtain a fairly representative image of water quality and its seasonal evolution in eight (8) well-defined stations. The parameters were determined using the standard methods defined by the french Association for Standardization (AfNOR). This study shows that the waters are acidic, with an average pH of 5.81 and a low electrical conductivity of between 42.67 ± 4.30 and 59.62 ± 21.84 μ***-1. At all stations, seasonal mean water transparencies are low (f the water samples collected had total nitrogen (TN) levels above the limit of 4 mg.L-1. All of the lake’s waters have non-compliant BOD5 (2.L-1) for raw water intended for the production of drinking water. Sites D6 and D7 have COD/BOD5 ratio greater than 3, which indicates the presence of non-biodegradable organic matter in these areas. Total coliforms, Escherichia coli and Enterococci were present in 100% (28/28) water samples at concentrations ranging from 2300 to 173,000 CfU/100 mL, from 100 to 1650 CfU/100 mL and from 20 to 1140 CfU 1/100 mL respectively. for Salmonella pathogens, they were detected in 50% of the dry season samples and in 100% of the rainy season samples. This almost permanent presence of this pathogenic germ denotes a poor quality of water with reference to this parameter. The presence of total coliform and other microbial contaminants suggests that supplied water is highly contaminated with pathogens and great reservoirs for them. Principal component analysis (PCA) of the physicochemical data set allowed de

关键词： Dohou Lake Water Quality Coliform fecal Coliform Physico-Chemical Parameters Typology and Variation

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Evaluation of Pollution Due to Gold Mining at Ity-floleu Area in Sub-Prefecture of Zouan-Hounien, Western Côte d’Ivoire

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Journal of Geoscience and Environment Protection 2019年第12期7卷 20-41页

作者： Gbamélé Kouassi Serge konan Kouakou Séraphin Kouassi Kouakou Lazare Brou Loukou Alexis konan koffi félix Bini Kouamé Dongui Laboratory of Geosciences and Environment University Jean Lorougnon Guede Daloa Côte d’Ivoire Departement of Geology University Jean Lorougnon Guede Daloa Côte d’Ivoire Laboratory of Ecology Biodiversity and Evolution University Jean Lorougnon Guede Daloa Côte d’Ivoire Laboratory of Environment Chemistry and Materials University Jean Lorougnon Guede Daloa Côte d’Ivoire

This study aims to evaluate the mineral pollution of a gold mining environment in the sub-Prefecture of Zouan-Hounien (C?;te d’Ivoire). Samples were taken from surface water and flesh and skin samples of the Cavally River fish species over a period of two successive years. Concentrations in major elements, trace elements (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn), nutrients () and physico-chemical parameters in situ were measured. The results obtained show that the surface waters have very low pH with an average of 5.70. for nutrient salts, the deterioration of water quality in the study area is mainly related to alterations by nitrates, phosphates and sulphates. The concentrations of fe, Cu, Hg and Pb are above the existing standards (international, fAO/WHO) for the majority of the stations, thus causing the deterioration of the surface water quality. Therefore, their use for agricultural irrigation could have negative impact on the health of the population and on biodiversity. Regarding the bioindicating species, the results obtained after analysis of samples showed that the fish (carp and machoiron) have fe, Cu, Hg and Pb concentrations higher than the existing standards (international, fAO/WHO) exposing consumers to high health risks. This study showed good correlation between the high values of surface water turbidity and the proximity of gold washing sites. The use of the principal component analysis (PCA) of the physicochemical dataset revealed comparable behaviors for certain minerals within the groups (fe, K, Mg, Mn and Na) and (As, Cd, Cu, Ni, Pb, Zn and Ca) in water. The Ascending Hierarchical Classification (AHC) analysis has defined three different classes of surface water in the study area. The presence of mineral trace elements in these receiving environments is of natural origin but would be strongly accentuated by human activities.

关键词： Cavally River fish Gold Mining Major Elements Nutritious Salts Surface Water Trace Elements

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Unsaturated flow Drying Bed(UfDB):An Alternative for Treatment of Septic Tanks Sludge

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Journal of Water Resource and Protection 2014年第5期6卷 454-462页

作者： Gnagne Théophile Yéo Ténénan Martial Kouamé Yao francis konan koffi félix faculty of Science and Environmental Management University Nangui AbrogouaAbidjanCote d’Ivoire Water and Sanitation for Africa National Representation of Cote d’IvoireAbidjanCote d’Ivoire faculty of Environment University Jean Lorougnon GUEDE of DaloaDaloaCote d’Ivoire

Unsaturated flow Drying Bed (UfDB) principles are based on the ones of wastewater treatment by infiltration-percolation on the one hand and septic tanks sludge solar-drying beds on the other hand. With UfDB, sludge charges are split with low heights, leading to the drying of suspended solids in 2 days, and the infiltration of the flow of liquid in unsaturated middle. for average charges reaching 12.5 cm/d, the treatment efficiency of total oxygen demand and Total Kjeldahl Nitrogen, respectively 95 and 96%, correspond to a treatment capacity of 0.5 kg of O2/d/m2 of drying area. Bacteria reductions of 4 Ulog are obtained from filtrates outlet, with average fecal coliforms charges less than 103 CfU/100 ml. Monitoring the hydrodynamic behavior through rates, moisture, organic matter and respiratory activity demonstrates that the clogging of the massifs is linked to a biofilm growth within them. A four week resting period allows biofilm resorption. Thus, the drying of the infiltration surface in two days, the elimination of carbon, nitrogen and bacterial pollutions, as well as the reversibility of clogging show that UfDB is a credible alternative for the treatment of septic tank sludge in the socio-economic context and climate of tropical Africa.

关键词： Sludge Clogging Drying Bed Unsaturated Zone Aeration Pores

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Improved germination of threatened medicinal Prunus africana for better domestication: effects of temperature, growth regulators and salts

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Journal of forestry Research 2020年第6期31卷 2403-2411页

作者： Justine Germo Nzweundji koffi konan Leopold MNyochembeng Nehemie Donfagsiteli Tchinda Nicolas Niemenak Department of Biological Science Higher Teacher Training CollegeUniversity of Yaounde IPO Box 47Yaounde´Cameroon Centre for Research on Medicinal Plants and Traditional Medicine Institute of Medical Research and Medicinal Plants Studies(IMPM)PO Box 6163Yaounde´Cameroon IngateyGen LLC Elizabeth CityNCUSA Department of Natural Resources and Environmental Sciences Alabama A&M UniversityHunstvilleALUSA

Prunus africana is an endangered medicinal species and has been classified as a priority for domestication in ***,the seeds rapidly lose their viability during storage at room temperature after 2–3 *** study aimed to improve seed germination of *** by germinating at different temperatures(4℃,28℃)using different concentrations of growth stimulators(sodium nitrate and gibberellic acid)and different concentrations of *** seeds had 91.7%germination at 4C after 1 month of *** regulators considerably influenced germination after 6 months and reached 66.0%with 10 mM gibberellic acid and 100%with 10 mM sodium *** three shoots per seed were developed,an indication of *** analyses revealed the presence of protein-like bodies close to the embryo axis and accumulations of starch after 7 days of *** 14 days,amyloplasts and dark protein bodies of various sizes were *** outcome of this study will contribute to improve the germination of *** for better domestication and conservation.

关键词： Conservation Germination Growth regulators Histochemical analyses Prunus africana Temperature

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Could Labor Be Considered Outside of a Medical Environment in Africa? Case of the Maternity Hospital in Yopougon Attié/Abidjan/Ivory Coast/West Africa

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Open Journal of Obstetrics and Gynecology 2023年第9期13卷 1632-1644页

作者： Ecra Ana Touré konan Blé Rémy koffi koffi Abdoul konan Perel Department of Gynecology and Obstetrics General Hospital of Yopougon Attié Abidjan C&#244te d’Ivoire faculty of Medicine Université Félix Houphoüet-Boigny Abidjan C&#244te d’Ivoire Urban Community Health Center of Wassakara Abidjan C&#244te d’Ivoire Department of Gynecology and Obstetrics General Hospital of Abobo Gare Abidjan C&#244te d’Ivoire

Introduction: Developing countries are characterized by a high maternal mortality rate, particulary related to the management of childbirth. The author describes in this work 588 childbirth labors that took place without any medical supervision. Method: All patients who reached the hospital with a full cervix dilation were included in the study. The outcomes of those childbirth labors without medical supervision were evaluated at the maternal and neonatal level. Results and Discussion: The average age of the patients was 28.1 ± 13 years with 47% nulliparous and 30% pauciparous. These patients represented 14% of all births;59% of the patients had had three and five prenatal consultations. 71% of them came straight from home and had meconium-stained amniotic fluid. The APGAR score was greater than 6 in 94% of newborns, and 66.7 of them weighed between 2500 and 3500 g. Only 0.9% of patients coming from home needed a caesarean section. Conclusion: Home birth is not yet possible in Africa because it is not supervised by professionals who know the risks of childbirth, its complications and recognize the warning signs;however, the results of this preliminary study show that the issue of home childbirth in Côte d’Ivoire can be reconsidered subject to greater involvement of medical staffs.

关键词： Cervix Dilation Stage Childbirth Labor Medical Supervision Neonatal Prog-nosis Côte d’Ivoire

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Electroanalytical Investigation on Paracetamol on Boron-Doped Diamond Electrode by Voltammetry

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American Journal of Analytical Chemistry 2019年第11期10卷 562-578页

作者： koffi konan Martin Lassine Ouattara Laboratoire de Chimie Physique UFR SSMT Université Félix Houphou&euml t-Boigny de Cocody Abidjan C&ocirc te d’Ivoire

An electroanalytical method was developed for the direct quantitative determination of paracetamol in tablets based on its oxidation behavior. The electrochemical oxidation and determination of paracetamol were easily carried out on born-doped diamond (BDD) electrode using two voltammetric techniques (CV and DPV). The electrochemical measurements performed by cyclic voltammetric (CV) and differential pulse voltammetry (DPV) techniques were carried out using a cathodically pretreated boron-doped diamond electrode in HClO4 and KClO4 electrolytes. HClO4 was then selected for analytical purposes and scan rate studies were also completed. The oxidation of the paracetamol is found to be irreversible and a diffusion-controlled nature of the paracetamol oxidation peak was established. A linear calibration curve for DPV analysis was constructed in the paracetamol concentration range from 0 μM to 13.87 μM, with 0.16 μM and 0.55 μM as the detection and quantification limit respectively.

关键词： Electroanalytical Method Boron-Doped Diamond Electrode Voltammetry Paracetamol

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The delay, symptoms, and survival of Ivorian adolescent girls and young adults with uterine cervical cancer

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Gynecology and Obstetrics Clinical Medicine 2021年第3期1卷 153-159页

作者： Edele Kacou Aka Apollinaire Horo Mohamed fanny Abdoul koffi Luc Olou Perel konan Ana Toure-Ecra Mamourou Kone Universite felix Houphou et Boigny(fHB) AbidjanBPV 34AbidjanCote d'Ivoire Centre Hospitalier Universitaire de Yopougon-Abidjan Service de Gynecologie-Obstetrique 21BP 632AbidjanCote d'Ivoire

Objective:To generate data on the nature and duration of cervical cancer symptoms,risk factors for delayed consultation,and diagnosis of adolescent and young adult groups in Cote d'***:This is a hospital-based cross-sectional study,conducted from July 2012 to May 2018,at the Department of Gynecology of the Yopougon teaching hospital in Cote d’*** inclusion criteria were those who were under 40 years of age at the time of diagnosis with oral and written *** whose information was more than 10%insufficient for the standards were excluded from the *** survey files standardized anonymous pre-established data collected using medical records followed by phone ***:The average age of the participants was 34±4.95 years with a minimum of 21 *** mean parity per woman was 3.49±3.***.34.9%were HIV *** median patient delay was 122 days with a long delay in 84.62%of *** median time to total diagnosis was 209 days with a longer total delay in diagnosis of 87.18%.41%of patients honored their treatment,68.75%of which had received surgery,and 31.25%of which had received *** 5-year survival rate was 65%.Conclusion:The Ivorian health system must focus on primary and secondary prevention,the only guarantee to decrease the morbidity and mortality indicators linked to cervical cancer.

关键词： Uterine cervical neoplasm Adolescent Survival Delay

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Characterization of Digestates from Anaerobic Co-Digestion of Manioc Effluent, Human Urine and Cow Dung

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Journal of Water Resource and Protection 2019年第6期11卷 777-788页

作者： Kpata-konan Nazo Edith Kouamé Yao francis Kouamé Kouamé Martin konan koffi felix Department of Agroforestry/University Jean Lorougnon Gué dé Daloa C&#244 te d’Ivoire Department of Environment/University Jean Lorougnon Gué dé Daloa C&#244 te d’Ivoire

This study focused on the characterization of digestates resulting from anaerobic digestion of manioc effluents from attiéké factories. Two types of digestate were characterized, one consisting of manioc effluent + urine and another composed of manioc effluent + urine + cow dung. As a result, these residues of bio-digestion rich in nutrients (NPK) can be used as agricultural fertilizer. Moreover, the determination of some microorganisms and heavy metals digestates allowed to better appreciate its fertilizing quality. These parameters remained in accordance with the quality standards of a digestate prescribed. These results show that digestates from anaerobic co-digestion of manioc effluents, urine and cow dung can be used without fear as an agricultural biofertilizer.

关键词： Manioc Effluent Human Urine Cow Dung Anaerobic Co-Digestion Digestate

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Indices of Water Quality and Pesticide Monitoring Survey in Lake of Western Cote d’Ivoire and Its Human Risk Assessment

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Natural Resources 2020年第2期11卷 46-69页

作者： Kouame Kouakou Benoit konan Kouakou Seraphin konan koffi felix Boussou koffi Charles Kouame Kouame Martin Dibi Brou Laboratory of Geosciences and Environment University Jean Lorougnon GuedeDaloaCote d’Ivoire Laboratory of Ecology Biodiversity and EvolutionUniversity Jean Lorougnon GuedeDaloaCote d’Ivoire

The aims of the work were to study the current quality of the water in Lake DOHOU used for drinking water supply through several physical, chemical analyses and using water quality indices (WQI). In addition, the question was whether the populations are at risk after drinking water of lake following a reduction of 50% and 75% in the median and maximum values of pesticides. Thus, the results of the pesticide monitoring program were incorporated into probabilistic human health risk assessment exercises. Water samples were collected over a period of one year. Pesticides were subjected to solid phase extraction and then analyzed using gas chromatography coupled to tandem mass spectroscopy. The other parameters were measured according to conventional methods. The results showed that the most frequently detected pesticides were aldicarb (79%), simazine (79%) and monolinuron (44%). They also showed the mean values of concentrations exceeding 1.5 μg/L. Metoxuron detected at a frequency of 29% showed the maximum average concentration (13.46 μg/L). Nearly 98% of the sampling points had at least one substance with an average concentration above the quality standard (0.1 μg/L) and 80% did not meet the total concentration standards. Cumulative risk quotient estimates after 50% or 75% abatement for frequently identified pesticides were greater than unity when extreme?values for adults and children were considered. To determine the suitability of water for aquatic life, drinking water consumption and drinking water production, the water quality index (WQI), the heavy metal pollution (HPI) and the heavy metal evaluation (HEI) were calculated. The poor quality of the water was mainly related to pesticides, organic matter and microbiological parameters. Most of the nutrients and metals studied were often below the standards of drinking water and aquatic life. The Water Quality Index (WQI) has shown that water quality is degrading for these three modes of use and ranges from poor to m

关键词： Pesticides Health Risk Assessment Water Quality Index Heavy Metal Index

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Obstetrical specificities of Ivorian adolescent mothers on a single-center hospital series of 1040 cases

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Gynecology and Obstetrics Clinical Medicine 2022年第2期2卷 86-90页

作者： Edele Kacou Aka Apollinaire Horo Mohamed fanny Luc Olou Perel konan Abdoul koffi Ana Toure-Ecra Mamourou Kone Universite felix Houphouet Boigny(fHB) Centre Hospitalier Universitaire de Yopougon-AbidjanService de Gynecologie-ObstetriqueAbidjanCote d’Ivoire

Overview and aim:The precocity of sexual intercourse among adolescent girls is a prominent source of unwanted ***,we aim to survey the past issues relating to the pregnancy,childbirth,and materno-fetal prognosis of Ivorian adolescent ***:We conducted a retrospsective study with adolescent group(n=1040)versus young adult group aged 20 to 24(n=736)over three years from1st January 2016 to 31rd December 2018 at the Department of Obstetrics and Gynecology at the University of Abidjan-Yopougon *** and fetal outcomes of the two groups were analyzed and compared by using Pearson's Chi2 tests and fisher's exact tests,followed by multivariate analysis and logistic regression using Stata software version ***:The average age of adolescent girls in our study was 17.45 years(SD=1.39)and a minimum of 12 *** consulted less(Pf adolescent girls(47.6%)versus young adults(39.1%)who had underwent caesarean section was significantly higher(P=0.0004).These adolescents were 3.5-fold more likely to develop hypertension and its complications in the postpartum period and 2.5-fold more likely to contract a postpartum *** mortality was not significantly associated with adolescence(OR=0.52)(95%CI:0.22–1.19;P=0.0891).The risk of prematurity,early neonatal death,and neonatal admission were 2.02(95%CI:1.56–2.63;P<0.0001),1.55(95%CI:1.14–2.13;P=0.0040),and 1.73(95%CI:1.12–2.71;P=0.0097)in adolescence,***:Adolescent childbirth remains associated with a poor prognosis.

关键词： High-risk pregnancy Adolescent girl West Africa

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