Wadsworth Center, New York State Department of Health, Albany, NY, USA.
Arch Environ Contam Toxicol. 2010 Apr;58(3):543-50. doi: 10.1007/s00244-010-9485-6. Epub 2010 Feb 17.
Perchlorate is a potent thyroid hormone-disrupting compound. Drinking water is one of the major sources of human exposure to perchlorate. Little is known about the occurrence of perchlorate in waters from China. In this study, water samples (n = 300) collected from 15 locations in 13 provinces and municipalities were analyzed for the presence of perchlorate. In addition, other inorganic anions that commonly occur in water--iodide, bromide, and nitrate--and the disinfection byproducts, bromate, chlorate, and chlorite were determined by high-performance liquid chromatography interfaced with tandem mass spectrometry. Perchlorate was detected in 86% of the samples analyzed, at concentrations ranging from <0.02 to 54.4 microg l(-1) (mean +/- SD 2.20 +/- 6.39 microg l(-1); median 0.62 microg l(-1)). Mean concentrations of perchlorate in tap water, groundwater, surface waters, and bottled water were 2.46, 3.04, 2.82, and 0.22 microg l(-1), respectively. Significant positive correlations were found between the concentrations of perchlorate and nitrate, perchlorate and chlorate, bromide and iodide, and nitrate and iodide.
高氯酸盐是一种强效的甲状腺激素干扰化合物。饮用水是人类接触高氯酸盐的主要来源之一。关于中国水中高氯酸盐的存在情况知之甚少。本研究采集了来自中国 13 个省市 15 个地点的 300 份水样，分析了水样中高氯酸盐的存在情况。此外，还采用高效液相色谱-串联质谱联用技术测定了水样中常见的其他无机阴离子（碘化物、溴化物和硝酸盐）和消毒副产物（溴酸盐、氯酸盐和亚氯酸盐）。在所分析的 86%的样品中检测到了高氯酸盐，浓度范围为<0.02 至 54.4μg/L（平均值±标准差为 2.20±6.39μg/L；中位数为 0.62μg/L）。自来水中、地下水中、地表水中和瓶装水中的高氯酸盐浓度分别为 2.46、3.04、2.82 和 0.22μg/L。高氯酸盐与硝酸盐、高氯酸盐与氯酸盐、溴化物与碘化物以及硝酸盐与碘化物之间存在显著的正相关关系。
