海南三亚湾海域水质状况评价

本文根据1998年10月至1999年8月海南三亚湾海域水质监测结果，分析了各水质参数的周年变化，在对各水质参数进行污染指数计算的基础上，应用水质综合评价模式，对该海域进行水质评价。结果表明：（1）受河口和高含量测值的影响，三亚湾海域水质呈现轻度污染状态，河口水质已接近严重污染；（2）除重金属Pb外，该海域其它水质参数均未超出一类海水水质标准；（3）除重金属Pb外，该海域其它水质参数变化的控制因子。

Assessment of water quality in sea area of Sanya Bay, Hainan

According to the investigation in the sea area of Sanya Bay from Oct .1998 to Aug. 1999, the situation of water quality in the sea area of Sanya Bay is good on the whole. But parts of the sea area are polluted in different degrees. Some of them are very serious, such as in the stations of estuary and harbor. The main pollutants are DO and Pb. Except those, other parameters of water quality are in accordance with the First class Quality Standard. The major control factor of water quality is precipitation and runoff.