渤海湾天津段水体质量评价及污染源分类

对采自渤海湾地区的水体样品进行了多项污染指标测试.结果表明,研究区水体呈弱碱性,主要污染物质为无机氮、锌、铅和汞.除无机氮外,其他指标基本符合二类水质标准.而无机氮浓度符合三类水质标准.研究区水质受到多种因素影响,陆地河流输入是影响研究区水质的主要因素,而养殖活动、石油开采、工业和民用污水排放等对研究区水质具有重要影响.本研究为渤海环境治理措施的制定和实施提供了进一步参考依据,并建议应有针对性地对这些既有或者潜在的影响渤海湾水质的因素进行分别控制和治理.

Water quality evaluation and classification of pollutant sources of Tianjin coastal zone in the Bohai Bay

The Bohai Sea is one of the most seriously contaminated sea areas of China. A number of contamination indices of water samples collected from the Bohai Sea Gulf have been measured and studied here. The study area has weak alkalic water with major pollutants of inorganic nitrogen, zinc, lead and mercury. The tested indices are lower than the second-grade water quality criteria except the inorganic nitrogen, which is only lower than the third-grade water quality criterion. Fluvial input is the predominant factor affecting the water quality in the study area, while sea-farming, oil exploitation, industrial and civil waste water discharge also affect much. In the article, we have provided further information for the Bohai Sea environment recovering and suggested that it is necessary to target controlling and treating the existing and potential risky factors.