矿泉水中铜绿假单胞菌及溴酸盐污染情况分析

了解国标《饮用天然矿泉水》(GB 8537-2008)实施前后矿泉水中铜绿假单胞菌(Pseudomonas aeruginosa)及溴酸盐污染情况,分析其污染原因,采用国标GB/T 8538-2008/54滤膜法和GB/T 5750.10-2006离子色谱法对样品中PA和溴酸盐进行分别检测。结果发现,在2008年1月至2009年9月期间,水源水和成品水中PA超标率分别为11.43%和35.42%,成品水中溴酸盐超标率为42.12%。在2009年10月至2010年9月期间,水源水和成品水PA超标率分别为30.30%和7.65%,成品水中溴酸盐超标率为18.10%。国标实施前后成品水PA污染主要原因分别在于加工过程的污染和水源水的污染。因此国标实施后矿泉水中仍存在PA和溴酸盐超标现象。

Contamination of Pseudomonas aeruginosa and Bromate in Mineral Water

In order to understand the contamination of Pseudomonas aeruginosa(PA) and bromate in mineral water before and after the implementation date of national standard for natural drinking mineral water(GB 8537-2008),and to analyse the contamination reason,PA and bromate,in mineral water samples,were respectively detected using filter membrane methods and Ion chromatography which based on the national methods(GB /T8538-2008 /54 and GB/T 5750.10-1995).It was found that,during 2008.01~2009.10,the positive rates of PA in both source water and finished water were respectively 11.43% and 35.42%,and that of bromate in finished water was 42.12%.However,during 2009.10~2010.09,the values of the three were 30.30%,17.65% and 18.10%,respectively.The PA contamination in the finished water could be respectively attributed to the producing process and the pollution of the source water.Thus,there still exist the excessive PA and bromate in mineral water after the implementation of GB 8537-2008.