The Nagar Parkar complex consists of Neoproterozoic igneous and metamorphic rocks dissected by episodic mafic and felsic dykes.The latter can be classified broadly into porphyritic felsic dykes and aplitic felsic dyke...The Nagar Parkar complex consists of Neoproterozoic igneous and metamorphic rocks dissected by episodic mafic and felsic dykes.The latter can be classified broadly into porphyritic felsic dykes and aplitic felsic dykes(minor)展开更多
The Kanpur Nagar is an economically and industrially vibrant area situated on the Middle Gangetic alluvial plain which lacks robust hydrogeochemical data.Therefore,in the present research,hydrogeochemical techniques i...The Kanpur Nagar is an economically and industrially vibrant area situated on the Middle Gangetic alluvial plain which lacks robust hydrogeochemical data.Therefore,in the present research,hydrogeochemical techniques integrated with multi-statistical analysis were used to assess the geochemistry,sources of ions,geochemical evolution,natural background levels(NBLs),threshold values(TVs),and suitability for drinking purposes using the integrated-weight water quality index(IWQI)of 68 groundwater samples from both pre-monsoon(PRM)and post-monsoon(POM)seasons.Additionally,an assessment was made of the sources and occurrence of fluoride and nitrate contaminants in the groundwater,followed by an evaluation of their associated non-carcinogenic human health risks(NCHHR)due to the oral consumption of F^(-),and NO_(3)^(-).Silicate weathering was found to be the most influential geochemical process in the study area,followed by active cation exchange,with a significant contribution from anthropogenic sources.The study assessed the identification of geochemical factors that control high levels of chemical components in groundwater using NBLs and TVs.Values of IWQI indicate the occurrence of excellent and good quality potable water in 78%and91%of the total groundwater samples from PRM and POM,respectively.As per the geochemical signature,the probable source of excess fluoride might be related to the interaction of groundwater with alluvial sediments deposited in the geological past,while agronomic sources could be the sole reasons for elevated nitrate concentration.It was found that children are more prone to NCHHR than the adult population,as per the calculated total hazard index.展开更多
文摘The Nagar Parkar complex consists of Neoproterozoic igneous and metamorphic rocks dissected by episodic mafic and felsic dykes.The latter can be classified broadly into porphyritic felsic dykes and aplitic felsic dykes(minor)
基金the DST for INSPIRE PhD scholarship.N Rai acknowledges partial support for this work by IIT Roorkee-Project No:FIG-100779-ESDby the IIT Roorkee institute fellowship(2017-2019)。
文摘The Kanpur Nagar is an economically and industrially vibrant area situated on the Middle Gangetic alluvial plain which lacks robust hydrogeochemical data.Therefore,in the present research,hydrogeochemical techniques integrated with multi-statistical analysis were used to assess the geochemistry,sources of ions,geochemical evolution,natural background levels(NBLs),threshold values(TVs),and suitability for drinking purposes using the integrated-weight water quality index(IWQI)of 68 groundwater samples from both pre-monsoon(PRM)and post-monsoon(POM)seasons.Additionally,an assessment was made of the sources and occurrence of fluoride and nitrate contaminants in the groundwater,followed by an evaluation of their associated non-carcinogenic human health risks(NCHHR)due to the oral consumption of F^(-),and NO_(3)^(-).Silicate weathering was found to be the most influential geochemical process in the study area,followed by active cation exchange,with a significant contribution from anthropogenic sources.The study assessed the identification of geochemical factors that control high levels of chemical components in groundwater using NBLs and TVs.Values of IWQI indicate the occurrence of excellent and good quality potable water in 78%and91%of the total groundwater samples from PRM and POM,respectively.As per the geochemical signature,the probable source of excess fluoride might be related to the interaction of groundwater with alluvial sediments deposited in the geological past,while agronomic sources could be the sole reasons for elevated nitrate concentration.It was found that children are more prone to NCHHR than the adult population,as per the calculated total hazard index.
