Statistical evaluation of fluoride contamination in groundwater resources of Santiago del Estero Province, Argentina  

作　　者：K.Rondano Gómez C.E.López Pasquali G.Paniagua González P.Fernández Hernando R.M.Garcinuño Martínez 

机构地区：[1]Departamento de Ciencias Básicas,Facultad de Ciencias Forestales,Universidad Nacional de Santiago Del Estero,Argentina [2]Departamento de Ciencias Analíticas,Facultad de Ciencias,Universidad Nacional de Educación a Distancia,Spain [3]Departamento de Química Analítica,Facultad de Agronomía y Agroindustrias,Universidad Nacional de Santiago Del Estero,Argentina

出　　处：《Geoscience Frontiers》2020年第6期2197-2205,共9页地学前缘（英文版）

基　　金：partially supported by the research project"Water and Environment";by the Secretary of Science and Technology of the University National of Santiago del Estero,Argentina(UNSE);National University of Distance Education(UNED)(project reference:2017/CTINV-0024);by the Comunidad of Madrid and European funding from FSE and FEDER programs(project S2018/BAA-4393,AVANSECALII-CM)。

摘　　要：This study investigates the suitability of statistical techniques for evaluating the fluoride content and the groundwater quality from Robles Department(RD)and Banda Department(BD)in Santiago del Estero(Argentina).For the original statistical study,evaluation of nine parameters(fluoride,pH,conductivity,atmospheric and water temperature,total dissolved solids,chloride,hardness,and alkalinity)of 110 collected underground water samples from 23 dispersed rural areas was proposed.Groundwater samples were obtained by sampling taken from wells at different depths.Fluoride levels were determined by a standard colorimetric method in two seasonal periods,the dry(from April to September)and rainy(from October to March)period.The analytical results obtained for physicochemical parameters such as pH,total dissolved solids(TDS),and temperature does not reveal any notable difference between the rainy and dry seasons studied.In both seasons,the atmospheric temperature average was 22℃.With respect to fluoride content,approximately 50%of the analysed groundwater samples exceeded the limit established by current legislation(1.0 mg/L),obtaining concentration levels in the range of 0.01-2.80 mg/L.This study demonstrates the usefulness of the univariate statistical method(quartiles calculation,interquartile range IQR),multivariate principal component analysis(PCA),and cluster analysis to establish a better understanding of the state of the contamination of the waters in the region studied.

关 键 词：Source water protection Santiago del Estero Multivariate statistical analysis FLUORIDE SPECTROPHOTOMETRY 

分 类 号：X824[环境科学与工程—环境工程]