摘要
藻毒素是在世界各地富营养化的饮用水源中广为发现的蓝绿藻产生的一种肝毒性多肽,该毒素可引起动物中毒并对人类产生危害.通过ODS硅胶柱浓缩某市1998年8月~1999年6月期间水体中的痕量微囊藻毒素,应用高效液相色谱方法,精确检测水源水及出厂水中藻细胞内外LR、YR、RR型微囊藻毒素含量.结果显示,LR型微囊藻毒素仅在源水中检出,其浓度是0.07~0.78mg/L;RR型微囊藻毒素在源水和出厂水中的检出浓度分别是0.08~2.71mg/L,0.07~1.09mg/L;YR型毒素未检出;总的藻毒素在10月和6月明显高于其他月份.因此该城市供水水体存在藻毒素的污染,并有明显的季节变化.研究结果有助于合理选择水源,同时为制定饮水中藻毒素卫生标准提供科学依据.
Microcystin is a kind of hepatotoxic peptide produced by cyanobacterium which has been found worldwide in eutrophicated potable water source. It has caused poisoning of animal and also posed a health hazard to human. The method of HPLC was applied to examine exactly the contents of trace intracellular and extracellular LR, YR, RR microcystin in source water and treated water, of which the samples were collected from August 1998 to June 1999 and concentrated by ODS silica gel column. The results showed that microcystins-LR was detected at 0.07-0.78μg/L in source water and not found in treated water. The microcystin-RR was detected at the level of 0.08-2.71μg/L in source water and 0.07-1.09μg/L in treated water, while the microcystin-YR was detected at zero level. The total microcystin was higher in October and June than that in other months; therefore, there exists microcystin pollution in the municipal water supplies with obviously seasonal variation of the level of microcystin. The results are conductive to choosing water source reasonably as well as to regulating hygienic criterion of microcystin in drinking water.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2001年第4期322-325,共4页
China Environmental Science
基金
卫生部卫生标准基金资助项目(2-995065)
