东海表层沉积物中重金属集散特征及变化规律

The features of concentration and dispersion of the heavy metals and their changing patterns in surface sediment of East China Sea

为研究重金属集散特征及在海洋沉积物中的变化规律,采用π定理建立准则,分别对表征重金属集散特征多因子中的中值粒径、细粒平均粒径及其含量、有机质和粘土含量做了数理统计与分析,建立多元集散控制方程,并运用最小二乘法求解方程中的相关系数.结果表明,该方程能够很好地表征海洋沉积物中重金属元素富集规律及其在海底环境中动态变化过程.

The mathematical statistics and analyses for multi-factors such as median grain diameter, average grain diameter, particle content, amount of organic material and sticky clay content were conducted based on n-principle to study the features of concentration and dispersion of the heavy metals and their trend. The concentration and dispersion control equations for the multl-factors were established, and the least square method was used to solve the correlation coefficients of the equations. The results show that the equations can characterize the enrichment regularity of the heavy metals in marine sediment and their dynamic changing process in underwater environment.