Distribution Characteristics of COD in the Waters of Pearl River Estuary  

珠江口水域化学耗氧量(COD)的分布特征(英文)

作　　者：杨美兰[1] 林钦[1] 黄洪辉[1] 甘居利[1] 蔡文贵[1] 吕晓瑜[1] 王增焕[1] 李纯厚[1] 杜飞雁[1] 胡德蓉[1] 

机构地区：[1]农业部渔业生态环境重点开放实验室,广东省渔业生态环境重点实验室,中国水产科学研究院南海水产研究所,广东广州510300

出　　处：《Marine Science Bulletin》2006年第1期68-74,共7页海洋通报（英文版）

摘　　要：The surveys on the COD in the Lingdingyang waters of Pearl River estuary were carried out in May and August of 2002. The results showed that the concentrations of COD in the waters ranged from 0,41 to 2.72 mg·L^-1 with an average of 1.21 mg·L^-1.The spatial distributions showed that COD concentration decreased gradually from the north to south of Pearl River estuary, and the concentration near coastal waters was higher than that in offshore waters. The concentration of COD in summer was higher than in spring. Evaluated by the first class （COD ≤ 2 mg·L^-1） of sea water quality standard （Chinese standard）, there were about 15 % of COD concentrations over the standard. The concentration of COD showed a positive correlation with the concentration of suspend substances in spring and summer, but in summer it showed a negative correlation with the concentrations of inorganic nitrate and phosphate.2002年5月和8 月对珠江口伶仃洋水域水质化学耗氧量(COD)进行了调查研究,结果表明:该水域近期 COD 含量变幅在 0.41 ～ 2.72 mg·L-1 之间,平均值为 1.21 mg·L-1;区域分布呈北部向南部水域逐渐递减以及近岸水域含量大于远岸的变化趋势;夏季 COD 的含量高于春季;以我国Ⅰ类海水水质 COD 含量≤2 mg·L-1 标准评价,超标率为 15 %;COD 含量与同期(春、夏季)的悬浮物含量呈正相关性,与无机氮和活性磷酸盐含量在夏季呈负相关性。

关 键 词：COD Pearl River estuary Distribution characteristics 

分 类 号：P734.2[天文地球—海洋化学]