长江口邻近海域化学需氧量的分布特征及影响因素分析  

The distribution and influence factors of COD in the Yangtze River Estuary adjacent sea area

作　　者：潘扬航 梁洲 王浩男 万霖 谭丽菊[1] 葛田田[1] PAN Yanghang;LIANG Zhou;WANG Haonan;WAN Lin;TAN Liju;GE Tiantian(College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100

出　　处：《厦门大学学报（自然科学版）》2020年第S01期63-68,共6页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金海洋科学基地野外实践能力提高项目(J1310037)。

摘　　要：基于2016年7月长江口邻近海域海洋调查项目测得的化学需氧量(COD)等调查数据,对该海域COD的时空分布及其影响因素进行了分析.进而通过对比2015年和2016年的COD数据,对2016年夏季该海域的有机污染程度进行评价.结果显示:2016年7月该海域COD范围为0.07~3.21 mg/L,平均值为0.62 mg/L.相比于2015年同一时段,10 m层与底层COD水平较为稳定,而表层COD水平有所下降(低约0.44 mg/L),表明COD主要受到生源有机物和陆源有机物输入的共同影响.Based on the investigation in the Yangtze River Estuary adjacent sea area in July,2016,the distribution and variation of chemical oxygen demand(COD)in this area were analyzed.Then,the level of organic contamination in this area in 2016 was evaluated by comparison with the level in 2015.Results showed that the COD in this area in July,2016 ranged from 0.07 mg/L to 3.21 mg/L with an average value of 0.62 mg/L.Compared with the data in the same period in 2015,the COD level in the 10 m layer and bottom was relatively stable,while the COD level in the surface decreased(about 0.44 mg/L),which indicated that the COD in this area was mainly influenced by both biogenic and terrestrial organics.

关 键 词：化学需氧量 长江口 有机污染 

分 类 号：P734[天文地球—海洋化学]