Department of Environmental Science, Gauhati University, Guwahati 781 014, Assam, India.
Environ Monit Assess. 2011 Aug;179(1-4):479-86. doi: 10.1007/s10661-010-1750-7. Epub 2010 Oct 27.
This study was undertaken to assess the heavy metal concentration of the drinking water with respect to zinc, copper, cadmium, manganese, lead and arsenic in Kamrup district of Assam, India. Ground water samples were collected from tube wells, deep tube wells and ring wells covering all the major hydrogeological environs. Heavy metals in groundwater are estimated by using Atomic Absorption Spectrometer, Perkin Elmer Analyst 200. Data were assessed statistically to find the distribution pattern and other related information for each metal. The study revealed that a good number of the drinking water sources were contaminated with cadmium, manganese and lead. Arsenic concentrations although did not exceeded WHO limits but was found to be slightly elevated. Copper and zinc concentrations were found to be within the prescribed WHO limits. An attempt has also been made to ascertain the possible source of origin of the metals. Positive and significant correlation existing between manganese with zinc and copper indicates towards their similar source of origin and mobility. In view of the present study and the level of heavy metal contamination, it could be suggested to test the potability of the water sources before using it for drinking purpose.
本研究旨在评估印度阿萨姆邦卡姆鲁普地区饮用水中锌、铜、镉、锰、铅和砷的重金属浓度。从管井、深井和环井中采集地下水样本，这些井覆盖了所有主要的水文地质环境。使用原子吸收光谱仪（Perkin Elmer Analyst 200）来估算地下水中的重金属。对数据进行了统计评估，以找到每种金属的分布模式和其他相关信息。研究表明，相当多的饮用水源受到镉、锰和铅的污染。砷浓度虽然没有超过世界卫生组织的限值，但略有升高。铜和锌的浓度都在世界卫生组织规定的限值内。还试图确定这些金属的可能来源。锰与锌和铜之间存在正相关和显著相关，表明它们具有相似的来源和迁移性。鉴于本研究和重金属污染水平，可以建议在将水源用于饮用之前，对其进行可饮用性测试。
