Singh Kunwar P, Singh Vinod K, Malik Amrita, Basant Nikita
Environmental Chemistry Section, Industrial Toxicology Research Centre, Post Box 80, MG Marg, Lucknow, 226 001, India.
Environ Geochem Health. 2006 Oct;28(5):473-85. doi: 10.1007/s10653-006-9053-1. Epub 2006 Jun 22.
The groundwater samples collected from the shallow and deep groundwater aquifers of an industrial area of the Kanpur city (Uttar Pradesh, India) were analyzed for the concentration levels and distribution pattern of nitrogenous species, such as nitrate-nitrogen (NO(3)-N), nitrite-nitrogen (NO(2)-N), ammonical-nitrogen (NH(4)-N), organic-nitrogen (Org-N) and total Kjeldahl-nitrogen (TKN) to identify the possible contamination source. Geo-statistical approach was adopted to determine the distribution and extent of the contaminant plume. In the groundwater aquifers NO(3)-N, NO(2)-N, NH(4)-N, TKN, Org-N and Total-N ranged from 0.10 to 64.10, BDL (below detection limit)-6.57, BDL-39.00, 7.84-202.16, 1.39-198.97 and 8.89-219.43 mg l(-1), respectively. About 42% and 26% of the groundwater samples of the shallow and deep groundwater aquifers, respectively, exceeded the BIS (Bureau of Indian Standards) guideline value of 10 mg l(-1) for NO(3)-N and may pose serious health hazards to the people of the area. The results of the study revealed that the groundwater aquifers of the study area are highly contaminated with the nitrate and indicates point source pollution of nitrate in the study area.
对从印度北方邦坎普尔市一个工业区的浅层和深层地下水体采集的地下水样本，分析了含氮物质的浓度水平和分布模式，如硝酸盐氮（NO(3)-N）、亚硝酸盐氮（NO(2)-N）、氨氮（NH(4)-N）、有机氮（Org-N）和总凯氏氮（TKN），以确定可能的污染源。采用地质统计学方法来确定污染物羽流的分布和范围。在地下水体中，NO(3)-N、NO(2)-N、NH(4)-N、TKN、Org-N和总氮的范围分别为0.10至64.10、低于检测限（BDL）至6.57、BDL至39.00、7.84至202.16、1.39至198.97和8.89至219.43 mg l(-1)。浅层和深层地下水体的地下水样本分别约有42%和26%超过了印度标准局（BIS）规定的10 mg l(-1)的NO(3)-N指导值，可能对该地区的居民构成严重健康危害。研究结果表明，研究区域的地下水体受到硝酸盐的高度污染，表明该研究区域存在硝酸盐点源污染。
