【摘要】 运用SPME-GC-MS检测方法,对重庆市A、B两净水厂净水过程中丁基锡和苯基锡的污染状况进行了研究,并对有机锡污染来源和不同城市净水过程中有机锡污染状况进行了探讨。结果表明:A、B两水厂净水过程中MBT检出率最高(最高浓度为120.8ngSn/L),其次是DBT、MPT和DPT,偶尔检测到TPT(2.8ngSn/L),没有检测到TBT;A、B两水厂的有机锡均来自受污染水源,A水厂取水口上游仅0.1km处检测到较高浓度的TBT(161.8ngSn/L),对A水厂饮用水安全造成威胁;重庆A、B两水厂有机锡污染明显轻于同期天津某水厂有机锡污染;国内净水厂有机锡污染主要来自受有机锡污染的水源,而加拿大给水中有机锡污染主要来自用作给水输配水管道的PVC管材的析出。更多还原

【Abstract】 The butyltins and phenyltin in two water treatment plants(A and B) in Chongqing were studied using SPME-GC-MS test method,the organotin sources and organotin polluting condition in water treatment processes in different cities were also investigated.The results showed: the MBT showed the highest detectable rate(the highest concentration was 120.8 ngSn/L) in A and B water treatment plant in Chongqing,and then the DBT,MPT and DPT with the decreasing detectable rate,the TPT could be detected occasionally(2.8 ngSn/L),no TBT was detected;the organotin in A and B water treatment plant both came from the polluted water resource,and the relatively high concentration TBT(161.8 ngSn/L) was detected at the location about 0.1 km upstream from the water intake of A water treatment plant which was a threat to drinking water safety of A water treatment plant;the organotin pollution in these two water treatment plants in Chongqing was obviously better than that in some water treatment plant in Tianjin;the organotin pollutants in the water treatment plants in China mainly came from the organotin polluted water resources,while in Canada the organotion pollutants mainly derived from the PVC pipe material in the water distribution and transmission pipes.更多还原