云南省阳宗海砷污染监测及对阳宗镇入湖河水、水源、食品的影响  

The survey of arsenic pollution in Yangzonghai Lake and its influence to the Yangzong River, the water source, the drinking water and local food in Yangzong Town of Yunnan Province

作　　者：石帮辉[1] 王建全[1] 李虹[1] 马永福[1] 梁丽红[1] 杨龙[1] 马重义[1] 徐学英[1] 徐艳娇[1] 李艳红[1] 

机构地区：[1]云南省澄江县疾病预防控制中心质量管理科,652599

出　　处：《中华地方病学杂志》2014年第2期182-186,共5页Chinese Journal of Endemiology

摘　　要：目的了解云南省阳宗海砷污染及对阳宗镇入湖河流、水源、食品的影响，为阳宗海砷污染治理，保障饮水和食品安全提供科学依据。方法2008—2010年，调查阳宗镇阳宗海沿岸砷污染情况。分别用二乙氨基二硫代甲酸银分光光度法和银盐法对阳宗海湖水、泉眼水，以及阳宗镇人湖河水、水源水、生活饮用水和本地生产食品进行砷含量监测。结果2008—2010年，阳宗海和3号泉眼平均水砷含量分别为0．12、0．10、0．03mg／L和23．92、2．4l、0．35mg／L，2009年较2008年分别下降了16．67％和89．92％，2010年较2009、2008年分别下降了70．00％、75．00％和85．48％、98．54％，呈逐年下降趋势。北斗抽水站南约100m的泉眼和阳宗镇人湖河水未受到砷污染。监测阳宗镇生活饮用水268份，水砷均符合《生活饮用水卫生标准》（GB5749．2006）中农村小型集中式供水标准（〈0．05mg／L）。监测阳宗镇本地产食品78份，食品中含砷量合格77份，合格率为98．72％。结论阳宗海砷污染已得到有效控制，砷污染对阳宗镇人湖河水、饮用水和食品安全没有产生较大影响，阳宗海水体沉积物或底泥中的砷依然存在隐忧，建议继续加强对阳宗海砷污染的监测和综合治理。Objective To understand status of arsenic pollution in Yangzonghai Lake and its influence to the Yangzong River, the drinking water source and local food and to provide a scientific basis for arsenic pollution control and drinking water and food safety. Methods From 2008 to 2010, the methods of silver diethyl dithiocarbamate spectrophotometric and silver salt spectrophotometry were used to monitor arsenic level in Yangzonghai Lake water, spring water, river water, water source, drinking water and locally produced food, respectively. Results From 2008 to 2010, the average arsenic concentrations of Yangzonghai Lake were 0.12, 0.10, 0.03 mg/L, and the No. 3 spring water were 23.92, 2.41, 0.35 mg/L, down 16.67% and 89.92% over the previous year from 2009 to 2008, and 70.00%, 75.00% and 85.48%, 98.54% over the previous year from 2010 to 2009 and 2010 to 2008, respectively, and showed a downward trend year by year. A spring water about 100 m south of the Big Dipper pumping station into the Yangzonghai Lake and the Yangzong River was not contaminated by arsenic. In Yangzong Town, the arsenic concentration of 268 drinking water samples met ＂Drinking Water Health Standards＂ （GB 5749-2006, 〈 0.05 mg/L）. Among 78 samples monitored of the locally produced food in Yangzong Town, 77 passed, with a passing rate of 98.72%. Conclusions Arsenic contamination of the Yangzonghai Lake has been effectively controlled. Arsenic pollution does not have a greater influence on drinking water and food safety in Yangzong Town, and arsenic in sediments or bottom mud remains uncertain in the Yangzonghai Lake. More measures and integrated management should be taken to strengthen the monitoring of arsenic pollution in the Yangzonghai Lake.

关 键 词：砷 饮水 食品 数据收集 

分 类 号：X52[环境科学与工程—环境工程] X830