摘要
目的探讨山阴县地方性砷中毒病区饮用水中砷与微量元素的分布特点。方法于2006年3月采集山阴县四里庄及上河西两砷病区饮用水水样,以高效液相色谱-氢化物发生-原子荧光光谱法(HPLC-HG-AFS)检测水砷含量、价态及形态,以电感耦合等离子体-质谱法(ICP-MS)检测水中砷及微量元素含量。结果检测水样63份,水砷超标率为39.68%;水砷以无机砷为主;超标水样中三价砷占无机砷的56.17%;29份水样微量元素分析发现部分水样砷、铁、锰、汞、硒、铅超标,其中铁和锰超标率均为55.17%;HPLC-HG-AFS与ICP-MS两种方法对总砷的检测结果经配对秩和检验,差异无统计学意义(T=179,P>0.10)。结论山阴县饮水型地方性砷中毒病区饮用水砷污染严重,已不适于饮用;饮水中部分微量元素超标,可能加重砷中毒。
Objective To know the distribution of arsenic and trace elements in drinking water in the endemic arsenism areas in Shanyin County, Shanxi Province. Methods Drinking water samples were collected from the chronic endemic arsenic poisoning areas of Silizhuang and Shanghexi, Shanyin County, Shanxi Province and HPLC-HG-AFS system was used to analyze the arsenic contents, valence and speciation. The trace elements were determined by ICP-MS. The data were analyzed by SPSS13.0 for windows. Results A total of 63 drinking water samples were determined, 39.68% of them exceeded the standard limit of arsenic level, inorganic arsenic was the main arsenical in drinking water, iAs3+/(iAs3++iAs5+) ratio was 56.17% in the water sample (arsenic was higher than 50 μg/L) . The contents of Fe, Mn, Hg, Se and Pb in part of drinking water samples exceed the standard limits. No significant difference was seen between the arsenic results determined by HPLC-HG-AFS and ICP-MS. Conclusion Arsenic contamination of drinking water in Shanyin County, Shanxi Province is severe. The most frequently seen arsenic valence state in drinking water is iAs3+. Some trace elements in part of drinking water samples exceed the standard limits, this may aggravate arsenic poisoning.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2007年第12期951-954,共4页
Journal of Environment and Health
基金
国家自然科学基金重点项目(30530640)
关键词
水
砷化物
微量元素
Water
Arsenide
Trace elements
