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目的了解海口市学校水质处理器净化前后饮用水中54种挥发性有机物的含量水平,并对净化前后挥发性有机物含量进行比较分析。方法配对采样,采集海口市39所学校共57台水质处理器净化处理前后的水样,采用全自动进样吹扫捕集气相色谱-质谱对样品进行测定;利用SAS 9.2对检测结果进行统计描述和比较分析。结果调查所采集的全部水样中,除三卤甲烷外,其他50种物质均未检出。所调查的水质处理器净化前后,水样中三卤甲烷的含量差异具有统计学意义。结论调查中所采集的水样均检出三卤甲烷,但其含量远远低于GB 5749—2006《生活饮用水卫生标准》及CJ94—2005《饮用净水水质标准》规定的限值标准。水质处理器对饮用水中的三卤甲烷具有净化效果。在净化过程中未检出三卤甲烷以外的其他50种挥发性有机物。
Objective To understand the levels of 54 volatile organic compounds in drinking water before and after purification of school water quality in Haikou City, and to compare the volatile organic compounds before and after purification. Methods Paired samples were collected from 39 schools in Haikou City, a total of 57 water quality before and after purification of water samples, the use of automatic injection purge and trap gas chromatography - mass spectrometry sample was measured using SAS 9.2 to describe the results of a statistical description And comparative analysis. Results All the water samples collected from the survey, except trihalomethanes, were not detected in the other 50 species. Before and after the water quality processor was investigated, the content of trihalomethanes in water sample had statistical significance. Conclusion Trihalomethanes were detected in the water samples collected during the survey, but their content was far lower than the limit values stipulated in Standards for Drinking Water Quality of Drinking Water GB 5749-2006 and Drinking Water Quality Standard CJ 94-2005. The water processor has a purifying effect on trihalomethanes in drinking water. No 50 other volatile organic compounds other than trihalomethanes were detected during the purification process.