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Xinhua report_tracking survey of the arsenic contamination in the Yangzong Lake

00:00 Apr 1 2008 Kunming

Description
2007年10月,宜良县环境监测站监测到阳宗海水体砷浓度与此前相比出现异常波动、升高。2008年4月以来,水体中砷浓度持续上升,6月份超过三类水质标准,砷浓度均值达0.055mg/L,超过国家Ш类水限制(0.05mg/L),于是将情况上报省环保局。后云南省环境监测中心站、昆明市环境监测中心、玉溪市环境监测中心即对阳宗海实施加频、加密监测,至同年7月16日砷浓度达0.102mg/L,超过国家V类水限制(0.1mg/L)。7月30日,全湖平均值为0.116毫克/升,超过五类水质标准0.16倍,类别为劣五类。
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