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Health Risk Assessment of Heavy Metals in the Water of the LoutétéRiver, Mfouati District, Southeast Congo

Journal of Geoscience and Environment Protection 2022年第12期10卷 77-86页

作者： Ifo Grace Mazel Diamouangana Mpissi Zita Flora Bibila Mafoumba Jean Claude matini laurent Laboratoire de Chimie Minérale et Appliquée Faculté des Sciences et Techniques Université Marien N’GOUABI Brazzaville Republic of the Congo Parcours chimie Faculté des Sciences et Techniques Université Marien N’GOUABI Brazzaville Republic of the Congo Département des Sciences Exactes Ecole Normale Supérieure Université Marien N’GOUABI Brazzaville Republic of the Congo Faculté des Sciences Appliquées Université DENIS SASSOU N’GUESSO Brazzaville Republic of the Congo

The overall objective of this study was to assess the health risk of water in the Loutété River contaminated with heavy metals. Six surface water samples were collected during the dry season (October 2014). The physico-chemical parameters (pH, electrical conductivity, total dissolved salts) were measured using a HANNA brand device. The values of these physico-chemical parameters are below the WHO standards. The concentrations of heavy metals Cr, Cu, Fe, Pb, Zn and Mn were determined by ICP-OES. These obtained in (μg/L) are in the range: Cr (0.08 - 5.8);Cu (0.6 - 14.5);Fe (0.2 - 386.05);Pb (1.02 - 370.09);Zn (8.02 - 248.7) and Mn (37.1 - 328.08). These concentrations are below the WHO drinking water guideline value in all samples for Cr, Cu, Mn and Zn, 50, 2000, 400 and 3000 μg/L respectively. Concentrations of As, Fe and Pb exceeded the WHO guideline value for drinking water at the following stations: S1 for arsenic, S4 for iron, and for Pb at all stations except S5. The health risk assessment for adults due to ingestion exposure gave HQing. values 1 for lead. In the case of ingestion, HQing. < 1 for the heavy metals Cr, Cu, Zn, Mn, with the exception of the following metals Arsenic, Lead and Iron.

关键词： Hazard Quotient Non-Carcinogenic Risk Heavy Metals

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Heavy Metal Contamination of Vegetables

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Journal of Environmental Protection 2016年第7期7卷 996-1004页

作者： Shobhana Ramteke Bharat Lal Sahu Nohar Singh Dahariya Khageshwar Singh Patel Borislav Blazhev laurent matini School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Bulgarian Food Safety Agency Central Laboratory for Chemical Testing and Control Sofia Bulgaria Department of Exact Sciences Marien Ngouabi University Brazzaville Congo

In India, several (>50) vegetables are widely used as food due to their high nutrition values. However, vegetables in industrial area are getting contaminated with heavy metals by disturbing biological and biochemical processes in the human body. In present study, the risk of human health by heavy metals (Fe, As, Cr, Mn, Cu, Zn, Pb, Cd and Hg) through the intake of common vegetables i.e. Solanum lycopersicum, Solanum melongena, Amaranthus tricolor L., Chenopodium album L., Spinacia oleracea and Coriandrum sativum obtained from the largest coal burning basin, Korba, India is described . The concentration of Fe, As, Cr, Mn, Cu, Zn, Cd, Pb and Hg in the soils (n = 6) was ranged from 18,328 - 37,980, 85 - 105, 34 - 72, 314 - 760, 146 - 165, 126 - 164, 1.11 - 1.39, 116 - 148 and 0.11 - 0.21 mg/kg with mean value (p = 0.05) of 28,011 ± 6582, 96 ± 6, 57 ± 11, 597 ± 148, 153 ± 5, 145 ± 11, 1.26 ± 0.10, 133 ± 11 and 0.16 ± 0.03 mg/kg, respectively. The contamination, sources and bioaccumulation, pollution and health risk indices of the heavy metals i.e. As, Fe, Cr, Mn, Cu, Zn, Pb, Cd and Hg in the plants are described.

关键词： Heavy Metals Vegetables Contamination Metal Pollution Index Health Risk Index

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Transport Pollution in India

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American Journal of Analytical Chemistry 2015年第9期6卷 757-766页

作者： Khageshwar Singh Patel Dhananjay Sahu Shobhana Ramteke Borislav Blazhev laurent matini Eduardo Yubero Jan Hoinkis School of Studies in Environmental Science Pt. Ravishankar Shukla University Raipur India Central Laboratory for Chemical Testing and Control Sofia Bulgaria Department of Exact Sciences E.N.S. Marien Ngouabi University Brazzaville Congo Applied Physics Department Miguel Hernandez University Elche Spain Karlsruhe University of Applied Sciences Karlsruhe Germany

Road dusts contribute a large fraction of air pollution in urban environment of India. In the present work, contamination assessment of ions and elements i.e. F﹣, Cl﹣, NO-3, SO2-4, NH+4, Na+, K+, Mg2+, Ca2+, As, Cr, Mn, Fe, Ni, Cu, Zn, Pb and Hg in the road dusts of the most industrialized area of central India: Raipur (capital, Chhattisgarh state) is described during year: 2008-2013. In year 2008, the mean content of the element i.e. F﹣, Cl﹣, NO-3, SO2-4, NH+4, Na+, K+, Mg2+, Ca2+, As, Cr, Mn, Fe, Ni, Cu, Zn, Pb and Hgin the dust (n = 5) was found to be 292 ± 112, 5068 ± 2445, 927 ± 280, 3336 ± 1315, 155 ± 65, 4273 ± 1761, 1477 ± 626, 974 ± 243, 9809 ± 2370, 21.2 ± 2.4, 150 ± 30, 12,816 ± 12,522, 157,736 ± 61,542, 60 ± 7, 566 ± 608, 348 ± 154, 296 ± 163 and 0.10 ± 0.09 mg/kg, respectively. The enrichment, concentration variations and sources of the elements are discussed.

关键词： Road Dust Heavy Metals Ions Contamination India

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Assessment of Groundwater Quality in Central India

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Journal of Water Resource and Protection 2016年第1期8卷 12-19页

作者： Shabya Choudhary Shobhana Ramteke Keshaw Prakash Rajhans Pravin Kumar Sahu Suryakant Chakradhari Khageshwar Singh Patel laurent matini School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Department of Exact Sciences E.N.S. Marien Ngouabi University Brazzaville Congo

The groundwater is widely used for irrigation of rice crops. The overuse of groundwater causes depletion of the water quality (i.e. enormous increase in conductivity, hardness and ion and metal contents, etc.) in several regions of the country and world. In this work, the quality of the groundwater in the densestrice cropping area, Saraipali, Chhattisgarh, Central India is discussed. The water is sodic in nature with extremely high electrical conductivity. The mean concentration (n = 30) of F-, Cl-, NO3-, SO42-, NH4+, Na+, K+, Mg2+, Ca2+ and Fe in the water was 1.2 ± 0.2, 98 ± 31, 46 ± 15, 56 ± 9, 19 ± 4, 206 ± 25, 9.2 ± 2.3, 39 ± 6, 114 ± 19 and 1.7 ± 0.6 mg/L, respectively. The sources of the contaminants are apportioned by using the factor analysis model. The suitability of the groundwater for the drinking and irrigation purposes is assessed.

关键词： Groundwater Indices Sources

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Heavy Metal Contamination of Tree Leaves

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American Journal of Analytical Chemistry 2015年第8期6卷 687-693页

作者： Khageshwar Singh Patel Reetu Sharma Nohar Singh Dahariya Ankit Yadav Borislav Blazhev laurent matini Jon Hoinkis School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Central Laboratory for Chemical Testing and Control Sofia Bulgaria Department of Exact Sciences E.N.S. Marien Ngouabi University Brazzaville Congo Karlsruhe University of Applied Sciences Karlsruhe Germany

The study of heavy metal (HMs) contamination of environment is of great interest due to their serious health hazard. In this work, the contamination of tree leaves with the HMs in the most polluted industrial city, Korba, India is described. The leaves of common trees i.e. Azadirachta indica, Butea monosperma, Eucalyptus, Ficus religiosa, Mangifera indica and Tectona grandis were selected for assessment of the HMs contamination as bioindicator. The elevated concentration of HMs (i.e. As, Fe, Cr, Mn, Cu, Zn, Cd, Pb and Hg) in the tree leaves was observed, ranging from 2.8 - 43, 728 - 5182, 8.6 - 49, 48 - 1196, 43 - 406, 79 - 360, 1.12 - 1.65, 1.6 - 16.4 and 0.13 - 0.76 mg/kg, respectively. The concentration, enrichment and sources of the HMs in the leaves are described. Azadirachta indica leaves, accumulating higher concentration of the HMs, showed a higher efficiency as bioindicator for the urban pollution.

关键词： Heavy Metal Soil Tree Leaf Bioindicator India

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Characterization and Evaluation of the Potential Uses of Mouyondzi Clay

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Journal of Minerals and Materials Characterization and Engineering 2018年第1期6卷 119-138页

作者： Joseph Marie Moutou Paul Mozalin Foutou laurent matini Vivien Banzouzi Samba Zita Flora Diamouangana Mpissi Raunel Loubaki Laboratoire de Chimie Minérale Appliquée Faculté des Sciences et Techniques Université Marien Ngouabi Brazzaville Congo Ecole Normale Supérieure Université Marien Ngouabi Brazzaville Congo

The overall goal of this study is to characterize and to evaluate the potential uses of clay mined in the Nzaou locality. The Mou sample is argillaceous texture and medium plasticity (Ip = 28.9). Kaolinite is dominant clay species (44.41%). It is associated with illite (9%). Quartz and rutile are the main non clay minerals. The CEC is 8.66 cmol+/kg. Organic matter is low (0.839%). Total shrinkage obtained by dilatometry at 1200°C is 9.26%. The chemical and mineralogical compositions have allowed using the ternary diagrams of Fabbri and Fiori that the MOU clay is favorable for glazed white stoneware (GWS) and for the production of clinker (KLK). Dondi typologies of ceramic tiles according to body color (mostly depending on the iron oxide content) and compactness (expressed by water absorption) have confirmed the use for the manufacture of the GWS and clinker. Classification always according to Dondi taking into account the rate of kaolinite, the fine fraction (°C will be vitrified. Flexural strength at 1200°C (16 MPa) does not correspond to the requirements of GWS or a clinker.

关键词： Mouyondzi Clay Mineralogy Technological Properties Potentiality Ceramic Tiles

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Assessment of Road Dust Contamination in India

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Atmospheric and Climate Sciences 2016年第1期6卷 77-88页

作者： Dhananjay Sahu Shobhana Ramteke Nohar Singh Dahariya Bharat Lal Sahu Khageshwar Singh Patel laurent matini Jose Nicolas Eduardo Yubero Jan Hoinkis JK Laxmi Cement Ahiwara Durg CG India School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Department of Exact Sciences E.N.S. Marien Ngouabi University Brazzaville Congo Atmospheric Pollution Laboratory Applied Physics Department Miguel Hernandez University Elche Spain Karlsruhe University of Applied Sciences Karlsruhe Germany

The road dusts (RD) are fugitive in nature causing potential health hazards to people living in highways. They are generated from different sources on the roads and being a valuable archive of environmental information. In the present work, contamination assessment of 18 heavy metals and ions in road dusts of the country are described. Techniques i.e. ion selective, ion chromatography and atomic absorption spectrophotometers were used for analysis of the ions and metals. The content of F-, Cl-, , , , Na+, K+, Mg2+, Ca2+, As, Cr, Mn, Fe, Ni, Cu, Zn, Pb and Hg in the road dusts was ranged from 75 - 895, 276 - 12718, 48 - 1423, 243 - 10,580, 11 - 539, 290 - 46,484, 110 - 7716, 84 - 1771, 595 - 15,955, 24 - 42, 164 - 526, 1711 - 5218, 63,850 - 144,835, 47 - 62, 81 - 720, 166 - 450, 92 - 295 and 0.05 - 0.12 mg/kg with mean value of 224 ± 43, 3734 ± 895, 592 ± 895, 2859 ± 662, 143 ± 29, 4826 ± 2049, 1565 ± 411, 837 ± 121, 8545 ± 1288, 31 ± 4, 246 ± 82, 3002 ± 851, 91,331 ± 18,587, 54 ± 4, 206 ± 145, 241 ± 64, 171 ± 42 and 0.08 ± 0.02 mg/kg, respectively (at 95% probability). The enrichment, variation, correlation and sources of the contaminants are discussed.

关键词： Ions Heavy Metals Sources Road Dust

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Contamination of Water, Dust, Soil, Rock and Urine with Fluoride in Central India

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Journal of Environmental Protection 2015年第12期6卷 1347-1359页

作者： Khageshwar Singh Patel Dhananjay Sahu Nohar Singh Dahariya Bharat Lal Sahu Shobhana Ramteke Borislav Blazhev laurent matini Eduardo Yubero Jan Hoinkis School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Central Laboratory for Chemical Testing and Control Sofia Bulgaria Department of Exact Sciences Marien Ngouabi University Brazzaville Congo Applied Physics Department Miguel Hernandez University Elche Spain Karlsruhe University of Applied Sciences Karlsruhe Germany

At least 15% of 0.1 million people residing in 117 villages of Tamnar block (Chhattisgarh, central India) are suffering from fluorosis diseases. In this work, the contamination of F- in the environment (i.e. water, soil, rock and urine) of the Tamnar block is described. The concentration variations of F-, Cl-, NO3-, SO42-, Na+, K+, Mg2+, Ca2+, Al, Mn, Fe and Zn in the groundwater are reported. The F- content in the water was ranged from 1.7 - 17 mg/L with mean value of 9.0 ± 3.7 mg/L. Fluoride was enriched up to 3-, 54-, 69- and 244-folds in the urine, soil, dust and rock, respectively. The cluster and factor analysis models were used to apportion sources of F- and other elements in the water.

关键词： Fluoride Contamination Groundwater Soil Rock India

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