【作者】 李新杰； 纪琼驰； 蒋丹丹； 陈晓东； 陈连生；

【Author】 LI Xin-jie1,CHEN Xiao-dong2,CHEN Lian-sheng2,et al (1Chemical School, Nanjing University of Science and Technology, Nanjing 210094, China)

【机构】 南京理工大学化工学院； 江苏省疾病预防控制中心；

【摘要】 目的研究基于NaClO3与HCl反应制备的ClO2发生液用于饮用水消毒的卫生安全性。方法通过化学分析、毒理试验及饮用水消毒总体性能试验来探讨ClO2发生液的毒性及其对饮用水卫生安全性的影响。结果 ClO2发生液中ClO2的含量可达48.21g/L,酸度(以H+计)可达4.48mol/L,且ClO2含量随放置时间的增加呈下降趋势;以2mg/L的ClO2投加量计,发生液可引入饮用水的ClO2-和ClO3-分别为0.004和0.054mg/L,可引入汞、银、铅、六价铬、镉和砷等金属离子均分别小于0.00002mg/L、0.0001mg/L、0.001mg/L、0.0004mg/L、0.00005mg/L和0.0001mg/L;含ClO2为25669mg/L的发生液对雌雄小鼠的急性经口毒性为低毒级,而含ClO2为14500mg/L的发生液为实际无毒级,发生液对小鼠骨髓嗜多染红细胞微核试验结果为阴性(χ2检验,P>0.05);饮用水消毒总体性能试验的各项指标均达到GB5749-2006标准的要求。结论以2mg/LClO2的投加量,ClO2发生液用于饮用水消毒的卫生安全性符合《生活饮用水消毒剂和消毒设备卫生安全评价规范(试行)》(2005)的要求。更多还原

【Abstract】 Objective To explore the hygienic safety of ClO2 solution generated by the reaction of sodium chlorate with hydrochloric acid for drinking water disinfection. Methods To explore the toxicity of the generated ClO2 solution and its effect on hygienic safety of drinking water by chemical analysis,toxicological testing and disinfection trail to drinking water. Results The ClO2 content of generated solution is up to 48.21g/L, the acidity(as H+)is up to 4.48mol/L, and the ClO2 content decreases with the time. At 2mg/L ClO2 dosage, the contents of Hg, Ag, Pb, Cr(Ⅵ ), Cd and As, introduced in the drinking water by the ClO2 solution, are all less than 0.00002mg/L, 0.0001mg/L, 0.001mg/L, 0.0004mg/L, 0.00005mg/L and 0.0001mg/L respectively. The acute oral toxicity of 25669mg/L ClO2 solution belongs to the low-toxic class, and the 14500mg/L ClO2 solution is non-toxic class. The mice bone marrow polychromatic erythrocytes micronucleus test of this solution is negative(χ2 test,P>0.05). All the indicators of overall performance test of the ClO2 solution for drinking water disinfection meet the requirements of GB5749-2006. Conclusion For the ClO2 solution generated by NaClO3+HCl used for drinking water disinfection, the hygienic safety meets the requirements of Hygienic Safety Evaluation Specification for Drinking Water Disinfectant and Disinfection Devices (on trial, 2005).更多还原