考洲洋底质中硫化物的含量与分布

1 999年 2月和 8月对考洲洋底质硫化物状况进行了调查。结果表明 :考洲洋底质中的硫化物含量在 1 3 7～ 2 2 8 7mg·kg- 1(干重 ,下同 )之间 ,平均值为 1 2 8 2mg·kg- 1。其含量呈养殖区 >河口入海区>近湾口区非均匀分布。丰水期间底质硫化物含量略高于枯水期的。底质硫化物含量与底质有机质含量和化学耗氧量的呈正相关关系。以全国海岸带污染调查关于底质硫化物含量标准 (3 0 0mg·kg- 1)比较 ,硫化物含量未出现超标现象 ;与其它海湾比较 ,其含量高于海南的安游湾而低于或远低于深圳湾、红海湾、衙前湾、南澳湾和雷州湾以及厦门西海域和大连湾

Sulphide in the Sediments of Kaozhouyang Bay in Mariculture and Multiplication Waters

A survey was taken on the status of the content of sulphide in the sediments of Kaozhouyang Bay in February and August of 1999. The result shows the content of sulphide in the sediments ranges from13.7 mg/kg to 228 7 mg/kg (dry weight, and the same as below) with an average of 128 2 mg/kg The distribution of the content of sulphide in the sediments is uneven with a variation trend of the culturing area>the estuary>the area near the sea entry of the bay. The content of sulphide in the sediments in the wet season is slightly higher than that in the dry season,and it is in a positive correlation with the content of Chemical Oxygen demand (COD). According to the standard by National Coastal Pollution Survey, the content of sulphide in the sediments of Kaozhouyang Bay does not exceed the standard. Compared with that in other bays or sea waters, the content of sulphide in the sediments of Kaozhouyang Bay is higher than that of Anyou Bay in Hannan province, while it is lower or far lower than that of Shenzhen Bay, Honghai Bay, Yaqian Bay, Leizhou Bay, Dalian Bay and west sea waters in Xiamen.