摘要
为保障人民群众的身体健康,我国制定了《生活饮用水卫生标准》(GB5749-2006)。为明确现行标准中多种限值卫生指标共存时饮用水的安全性,选用卫生指标限值时的有机化学物CH2Cl2、CH2O、CCl4、C8H10、C8H8,农药C3H8NO5P、C10H19O6PS2、C8N2Cl4,重金属Cd^3+、Mn^2+,采用急性毒性藻红外测试技术,开展了3类药品共存的生物毒性测试分析。结果表明:藻对限值时的单一卫生指标均无响应,表明单一卫生指标限值安全;限值的单一卫生指标共存时藻对其响应占比情况则是二元共存为25%~100%、三元共存为37.5%~100%、四元共存为58.3%~100%、五元共存为100%、六元共存为100%,表明卫生指标共存对藻的毒性随共存元数的增加而增大;含Mn^2+、CH2O或农药的共存组合对藻的毒性高于其他组合。
To guarantee the health of people, Standards for Drinking Water Quality ( GB 5749 - 2006) has been set up in China. To clarify the safety of drinking water when multiple indexes coexisted at the limit concentration, the following indexes at the limit concentration were selected as organic chemicals: CH2Cl2, CH2O, CCl4, C8H10, C8H8;pesticides: C3H8NO5P, C10 H19 O6PS2, C8N2Cl4;heavy metals: Cd^3+, Mn^2+. The biotoxicity of three types of indexes coexisted was tested through the acute toxic algae infrared technology. The results showed that, the single indexes at the limit concentration did not produce biotoxicity to the algae, indicating that the limits of a single health indicator were safe. When the single indexes coexisted at the limit concentration, the proportion of algal response in each combinations was as follows: binary 25%-100%, ternary 37. 5%-100%, quaternion 58. 3%- 100%, quinary 100%, six kinds 100%. The above results indicated that toxicity of indexes coexistence to algae increased with the number of coexisting indexes. The coexisting combinations containing Mn^2 +, CH2O or pesticides were more toxic to algae than other combinations.
作者
林艳
罗菲尔
郭蔚华
仲怡
LIN Yan;LUO Fei-er;GUO Wei-hua;ZHONG Yi(College of Environment and Ecology,Chongqing University,Chongqing 400045 ,China;Engineering General Institute of Shanghai Construction Group,Shanghai 201114,China;Changzhou Jinling Group,Changzhou 213000,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2019年第19期57-65,共9页
China Water & Wastewater
关键词
生活饮用水
生物毒性
多元共存
藻红外技术
滇池铜绿微囊藻
drinking water
biotoxicity
multiple indexes coexistence
algae infrared technology
Microcystis aeruginosa in Dianchi Lake
