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目的:分析近年监测深圳市各主要水厂出厂水中邻苯二甲酸二(2-乙基己基)酯(DEHP)的污染状况及其变化规律性。方法:从2008年起每年采集雨季和旱季的出厂水,用氢火焰离子化气相色谱法(GC-FID)测定其DEHP含量。结果:各主要水厂出厂水DEHP合格率每批次都在90%以上,DEHP污染水平随季节气候变化呈现周期性波动,雨季较高旱季较低,且在东南部地区水厂中有逐年增高的趋势。结论:深圳市出厂水DEHP污染总体水平在国家标准限量内,其波动性明显受季节气候影响,较高的气温和降雨有利于DEHP的迁移和进入饮用水,水厂的生产需要有针对性的预防处理措施。
OBJECTIVE: To analyze the pollution status and regularity of DEHP in factory water in Shenzhen in recent years. Methods: The factory water of rainy season and dry season was collected every year from 2008, and its DEHP content was determined by flame ionization gas chromatography (GC-FID). Results: The qualified rate of DEHP in each main water factory was over 90% for each batch. The level of DEHP pollution fluctuated periodically with the seasonal climate change. The higher the wet season was, the higher the dry season in the southeastern region was. the trend of. Conclusion: The overall level of DEHP in factory water in Shenzhen is within the limits of the national standard. The volatility of DEHP in Shenzhen is obviously affected by the seasonal climate. Higher temperatures and rainfall are favorable for the migration of DEHP and drinking water. The production of water plants needs to be targeted Preventive measures.