长江口水域主要污染物与悬浮物相关性分析

Analysis of the Correlation between Main Pollutants and Suspended Solids in Yangtze Estuary Waters

摘要: 本文利用SPSS统计软件，对2012~2016年长江口三峡子系统水质监测断面的4个水质参数，按汛期非汛期/涨落潮/上下层的分类，开展长江口水域主要污染物与悬浮物间的相关性及总磷组成研究分析。分析结果显示，监测时段内各参数浓度总体上为非汛期大于汛期；抽滤样与摇匀样相比，TP平均下降率达到64.8%，COD_Mn为40.6%；全年可溶性总磷占T_P沉比为47.6%，而颗粒态磷为52.4%；可溶性总磷占TP_混比为29.8%，而颗粒态磷为70.2%。抽滤样与悬浮物基本不存在相关性，而摇匀样和沉淀样与悬浮物呈极显著正相关或显著正相关。总体上水质参数与SS的相关系数R存在R_TP混 > R_TP沉和R_G混 > R_G沉的规律。

Abstract: In this paper, SPSS statistical software was used to analyze the correlation between main pollutants and suspended substances and the composition of total phosphorus in the Yangtze river estuary, based on the four parameters in the water quality monitoring section of the Three-Gorges sub-system from 2012 to 2016 by classifying water period/fluctuation tide/upper and lower layers. The results show that the concentration of each parameter in non-flood season is generally greater than that in flood season. Compared with the shake sample, the average decrease rate of TP in the filter sample reached 64.8%, and that of COD_Mn was 40.6%. Soluble total phosphorus accounted for 47.6% of TP in the precipitate sample, while granular phosphorus accounted for 52.4%. Soluble total phosphorus accounted for 29.8% of TP in the shake sample, while granular phosphorus accounted for 70.2%. There is no correlation between the filter sample and the suspended substance, but there is an extremely significant positive correlation or significant positive correlation between the shake sample and the precipitate sample and the suspended substance. In general, the correlation coefficients of TP in the shake samples and suspended matter are greater than those of the precipitate samples, as same to COD_Mn.