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当前位置: 首页 > 文章 > 1989—2010年广东沿海牡蛎体内锌的时空分布特征与污染水平分析 水产学报 2011,35 (8) 1217-1224
Position: Home > Articles > Spatial-temporal characters and pollution level of Zn in oysters from Guangdong coastal areas from 1989 to 2010 Journal of Fisheries of China 2011,35 (8) 1217-1224

1989—2010年广东沿海牡蛎体内锌的时空分布特征与污染水平分析

作  者：
陈海刚;贾晓平;蔡文贵;王增焕;秦洁芳;杨涛
单  位：
中国水产科学研究院南海水产研究所广东省渔业生态环境重点研究室农业部南海渔业资源环境重点野外科学观测实验站;上海海洋大学海洋科学学院
关键词：
牡蛎;锌(Zn);时空分布;单因子指数;非致癌性风险指数;广东沿海
摘  要：
根据历史和调查资料,对1989—2010年广东沿海牡蛎体内锌(Zn)的时空分布特征和污染水平进行了分析与比较。结果表明,牡蛎体内Zn的浓度总平均值为211.5 mg/kg,从总体看其浓度出现频率呈对数正态分布。在时间上,牡蛎体内Zn总体平均浓度的分布呈阶段性变化,具体表现为1989—2007年Zn的浓度呈微弱降低的趋势,基本维持在197.0mg/kg的水平;2007—2009年牡蛎体内Zn的浓度有明显升高的趋势,之后Zn的浓度有所降低。在空间上,粤东和粤西沿海牡蛎体内Zn浓度的变化均呈先降低后增加的趋势,且基本与广东沿海牡蛎体Zn平均浓度的变化趋势相同,而珠江口牡蛎体Zn的浓度水平相对较高并表现出趋于稳定的变化规律。单因子指数和非致癌性风险指数评价结果均表明,牡蛎体内Zn的总体不存在明显的污染,但从当前保护环境角度应当尽快设立我国水产品中Zn含量的限定标准。
译  名：
Spatial-temporal characters and pollution level of Zn in oysters from Guangdong coastal areas from 1989 to 2010
作  者：
CHEN Hai-gang1,2,JIA Xiao-ping1,CAI Wen-gui1,WANG Zeng-huan1,QIN Jie-fang1,2,YANG Tao1,2 (1.Key Laboratory of Fishery Ecology Environment,Guangdong Province of China,Key Field Scientific Experimental Station of South China Fishery Resource and Environment,Ministry of Agriculture,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China; 2.College of Marine Science,Shanghai Ocean University,Shanghai 201306,China)
关键词：
oyster;Zn;spatial-temporal distribution;single factor index;non-carcinogenic hazard index;Guangdong coastal waters
摘  要：
Concentrations of Zn were measured in oysters collected from 15 stations along Guangdong coastal areas during the period from 1989 to 2010.According to the more recent sampling data and the historical data,the spatial-temporal characters of Zn in oysters were analyzed,and then the pollution level of Zn was evaluated with single factor index and non-carcinogenic hazard index.The results showed the average concentration of Zn in oysters from the study sites was about 211.5 mg/kg with a lognormal distribution.In addition,annual variation of Zn in oysters depicted a three-phased trend pattern,the average concentration of Zn in oysters decreased slightly during the period from 1989 to 2007,and then reached a stable concentration of 197.0 mg/kg,and increased obviously during the period from 2007 to 2009,and then presented a gentle decline from 2010.Spatial variation of Zn in oysters showed the pollution level of Zn in oysters from Pearl River Estuary was higher and a different spatial trend of Zn was observed,which was different from the results from East Guangdong coastal waters and west Guangdong coastal waters.Furthermore,the results showed no obvious effect on human health according to the evaluation of single factor index and non-carcinogenic hazard index,which indicated a low pollution level of Zn in oyster,but there is no established standard of Zn level limit in consuming the oysters.

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