大窑湾海域水化要素分布及相关关系的探讨

本文依据大窑湾的环境调查资料为基础，系统地阐述了水体中化学要素ｐＨ、盐度、透明度、ＤＯ、ＣＯＤ、ＴＯＣ、浊度、悬浮物、ＮＨ４－Ｎ、ＮＯ２－Ｎ、ＮＯ３－Ｎ、ＰＯ４－Ｐ、ＳｉＯ３－Ｓｉ、Ｃｕ、Ｐｂ、Ｚｎ、Ｃｄ、Ａｓ、Ｈｇ、Ｃｒ、硫化物、六六六、石油等分布规律。诸要素主要是在潮流水动力支配下，形成扩散带。各要素中仅有无机氮和ＰＯ４－Ｐ两项含量超标，其余要素含量范围都是处于海水正常浓度水平，属于一类海水水质。文章并对各要素进行相关关系分析。

A Study on Distribution of Hydrochemical Factors and Interrelationships in the Waters of Dayao Bay

Based on the results of the environmental investigation in 1992,the distributive regularities of the factors in the water column of Dayao Bay,such as pH,DO,COD,TOC,salinty,turbidity,suspended matter,transparency,nutrients(NH4-N,NO2-N,NO3-N,PO4-P,SiO3-Si),heavy metals(Cu,Ph,Zn,Cd,Hg,Cr),As,sulphide,666,oil etc.are summarized systematially in this paper.Through analysis,it was found that only inorganic N and PO4-P contents of the various factors had exceeded the standards,the rest being all at the normal concentration levels.Thus the Dayao Bay water belongs to class A sea water.A correlation analysis has been made of the various factors.