Seasonal variations of lead, arsenic, cadmium and aluminium contamination of groundwater in Dhemaji district, Assam, India

被引：85

作者：

Buragohain, Mridul ^{[2
]}

Bhuyan, Bhabajit ^{[1
]}

Sarma, Hari Prasad ^{[3
]}

机构：

[1] N Lakhimpur Coll, Dept Chem, Lakhimpur 787031, Assam, India

[2] Lakhimpur Girls Coll, Dept Chem, Lakhimpur 787031, Assam, India

[3] Gauhati Univ, Dept Environm Sci, Gauhati 781014, Assam, India

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2010年 / 170卷 / 1-4期

关键词：

Seasonal variations; Lead; Aluminium; Cadmium; Arsenic; METAL CONTAMINATION; WATER; ZINC;

D O I：

10.1007/s10661-009-1237-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Seasonal variations in the concentrations of groundwater with respect to arsenic, lead, cadmium and aluminium has been studied in Dhemaji district of Assam, India. The water samples were collected from 20 different sites in both dry and wet seasons. The metals were analysed by using atomic absorption spectrometer, Perkin Elmer AAnalyst 200 model. The concentrations of aluminium, lead and cadmium in groundwater were found to be significantly elevated. High concentrations of all the metals were recorded in the dry season than in the wet season. Univariate statistics along with skewness, kurtosis and confidence limit have been calculated for both the seasons to test the distribution normality for each metal. Statistical analyses of the data reveal non-uniform distribution of the metals in the area. The metal contamination of groundwater in the district follows the trend Al > Pb > Cd > As in both the seasons.

引用

页码：345 / 351

页数：7

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