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和世界上许多国家一样,我国对饮用水采用加氯消毒的方法。饮水氯化消毒的安全性问题正逐步引起人们的关注。氯与水中有机物起反应,会产生一系列氯化副产物,同时化工工业、金属部件清洗、洗衣业等也常用四氯化碳、氯仿、二氯甲烷、1.1.1—三氯乙烷等作为原料和溶剂。由于它们的沸点低,易挥发,造成环境污染并随饮用水源危害人群。为了解城镇饮用水污染情况,我们对本省平湖、湖州、海宁、嘉兴、萧山、绍兴、余姚、杭州等自来水公司的源水、滤后水、出厂水中的氯仿、四氯化碳、二氯甲烷、1.1.1—三氯乙烷含量进行了检测,现报告如下。材料与方法1．样品来源平湖、湖州、海宁、嘉兴、萧山、绍兴、余姚、杭州等自来水公司。分别采集源
Like many countries in the world, our country uses chlorination of drinking water. The safety of drinking water chlorination disinfection is gradually aroused people’s attention. Chlorine reacts with organic matter in water to produce a series of chlorinated by-products, while carbon tetrachloride, chloroform, methylene chloride, 1.1.1-trichloroethane and the like are commonly used in the chemical industry, metal parts cleaning and laundry industry Raw materials and solvents. Because of their low boiling point, volatile, causing environmental pollution and drinking water hazards endanger the population. In order to understand the drinking water pollution in urban areas, we analyzed the source water, filtered water, chloroform in the factory water, carbon tetrachloride, methylene chloride , 1.1.1-trichloroethane content were tested, are as follows. Materials and methods 1. Sample sources Pinghu, Huzhou, Haining, Jiaxing, Xiaoshan, Shaoxing, Yuyao, Hangzhou and other water companies. Collect the source separately