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本文利用1983—1985年辽宁省海岸带地质、地貌及沉积化学38个站位调查资料,对底质重金属环境背景值及环境质量进行了探讨。研究发现,该区底质重金属分布受沉积类型和水动力因素控制。绝大部分底质重金属的环境质量是良好的,例如pH值一般为7.2—8.6.重金属与沉积物组分相关矩阵表明,该区只有粘土和重金属显著相关。按照其回归方程确定金属环境背景值及评价标准,并按标准比值划分底质重金属环境质量分区。该方法是可行的。
Based on the survey data of 38 stations in the geology, geomorphology and sedimentary chemistry of the coastal zone of Liaoning Province from 1983 to 1985, the background value of environmental heavy metal pollution and the environmental quality were discussed. It is found that the distribution of heavy metals in the sediment is controlled by sediment types and hydrodynamic factors. The environmental quality of most heavy metals is good, for example, the pH value is generally 7.2-8.6 The correlation matrix of heavy metals and sediments shows that there is only a significant correlation between clay and heavy metals in this area. According to the regression equation to determine the background value of the metal environment and evaluation criteria, and according to the standard ratio of the quality of the end-subsoil heavy metal partition. This method is feasible.