应用微核技术对北京三海水域污染状况的研究

2003和2004年于北京三海（西海、后海和前海）分别采集21、22个样品，利用蚕豆根尖微核技术对水体的污染状况进行了遗传毒性分析。结果表明，水体总体显示出不同程度的遗传毒性特征。2003、2004两年中，微核相对率〈1．5的样本分别占4．7619％、18．1818％，主要分布于前海和后海湖心区域；微核相对率为1．5～2．0的样本分别占28．5714％和13．6364％；微核相对率为2．0～3．5的样本分别占28．5714％和45．4545％；微核相对率〉3．5的样本分别占38．0952％和22．7273％。其中。在民居密集的西海区域，两年重度污染率均达到40％。结果表明，水体污染程度与人为因素具有显著相关。本文对试验方法亦进行了讨论。

Study on water pollution of Sanhai in Beijing with micronucleus test method

The micronucleus test with Vicia faba root tip cell was used to study the water pollution of Sanhai in Beijing with 21 and 22 samples respectively in 2003 and 2004. The results showed that the whole aquatic area was polluted and appeared genetic toxicity. The sample frequencies with microflucleus rates lower than 1.5 were 4.76 % and 18.18 %, respectively, which distributed in the center of Qianhai and Houhai. The samples of micronucleus rates between 1.5-2.0 were 28.57 % and 13.64 %. However, the samples of micronucleus rates between 2.0- 3.5 were 28.57 % and 45.45 %. The samples which micronucleus rates were higher than 3.5 were 38.0 % and 22.7 %. Among these sample sites, the densely populated Xihai was heavily polluted.