太湖流域水中微囊藻毒素含量调查  

Survey on Microcystins in Lake Taihu

作　　者：陈艳[1] 俞顺章[1] 林玉娣[2] 胡磊[2] 徐明[2] 沈炜[2] 杨坚波[2] 

机构地区：[1]复旦大学公共卫生学院,上海200032 [2]江苏省无锡市卫生防疫站

出　　处：《中国公共卫生》2002年第12期1455-1456,共2页Chinese Journal of Public Health

基　　金：复旦大学Med -X基金资助 ;编号EXF2 0 1 30 7;国家自然科学基金重点项目资助 ;编号 39730 380

摘　　要：目的　了解有毒蓝藻水华频繁暴发的太湖流域周边城市水源水和饮用水中微囊藻毒素 (MC)的含量。方法　采用 5 0ng/L检出限的酶联免疫吸附试验 ,于 2 0 0 1年 7月对江苏无锡 10个调查点的水样MC含量进行测定。共收集水样 90份 ,其中以太湖水或深井水为源水的 7个自来水厂的水源厂、出厂水各 11份 ,末梢水 4 8份 ,浅井水 17份 ,河水 3份。结果　太湖水来源的 8份水源水中均检出高浓度MC ,其范围在 2 6 99～ 14 188ng/L之间 ,源水处理后仍检出微量毒素 (<10 0ng/L) ;深井源水、出厂水和末梢水均未检出毒素 ;浅井水MC检出率为 2 9 4 % ,其浓度范围在 6 4～32 3ng/L之间 ;仅 1份河水检出MC。结论　采用常规饮水处理措施不足以完全去除水华时期水体中的MC ,需进一步对该地区饮水MC污染危险性进行评价。ObjectiveTo investigate the level of microcystins(MC)in source and drinking water of a city along Lake Tiahu where toxic water blooms frequently occurred.MethodsAn enzyme-linked immunosorbent assay(ELISA) with a detection limit of 50ng/L,was used to monitor MC in water samples collected in July 2001 from 10 regions of Wuxi city,Jiangsu province in China.Of the 90 samples obtained,each 11 samples were raw and produced water from 7 waterworks that using lake or deep-well water as water sources,48 were household tap water,17 were shallow-well water,and 3 were river water.ResultsHeavy contamination with MC was observed in all 8 raw water samples from lake Taihu,with a range of 2 699-14 188ng/L.Trace amount of MC(less than 100ng/L) remained in the treated and household tap water that produced from the lake water.No MC was detected in raw and treated deep-well water.MC was also detected in 5 of 17 shallow-well water,with a range of 64-323ng/L.Only 1 river water was positive for MC.ConclusionRegular water treatments might not be sufficient to remove MC from drinking water during bloom situations.More detailed investigations were required to evaluate the risk of MC contamination in the water supplied in this area.

关 键 词：太湖流域 微囊藻毒素 酶联免疫吸附试验 含量测定 水卫生 

分 类 号：R123.1[医药卫生—环境卫生学]