长江入海口浅层沉积物中典型有机氯农药分布特征
The Distribution Characteristics of Typical Organochlorine Pesticides in Shallow Sediments of the Yangtze River Estuary
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摘要: 对长江入海口包括江苏启东,上海崇明岛、长兴岛、横沙岛等地区的浅层沉积物中典型有机氯农药(OCPs)的分布情况进行了研究。采用气相色谱-电子捕获检测器进行检测,方法检出限为0.10 ng/g,回收率为62.4%~116.7%,精密度(RSD)为2.7%~8.3%。调查分析结果显示,长江入海口沿岸均存在轻度和中度的OCPs污染,主要检出物总滴滴涕(DDTs)浓度范围为1.22~626.43 ng/g。深度(0~80 cm)采样检测结果表明,研究区表层及深度样品中DDTs均有不同程度检出,浅层沉积物中DDTs在0~20 cm区域占检出总量的58.1%;其次是20~40 cm区域,DDTs占总量的30.8%;40~60 cm区域DDTs占总量的8.2%;60~80 cm区域DDTs占总量的2.9%,即浅层沉积物中DDTs主要集中在0~40 cm区域,部分点位40~80 cm能够检出少量DDTs。本研究提供的数据为该地区OCPs垂直分布提供参考。Abstract: The typical organochlorine pesticides (OCPs) distribution of the Yangtze River estuary was studied for shallow sediments from Qidong Jiangsu, Chongming Island, Changxing and Hengsha Island Shanghai. The detection limit is 0.10 ng/g, the recovery of samples are 62.4%-116.7% and the relative standard deviation (RSD) are 2.7%-8.3% by using Gas Chromatography equipment with electron capture detector (ECD). Research results indicate that mild and moderate contamination of OCPs did exist along the coast of Yangtze River estuary and the mainly detected total DDTs ranged from 1.22 to 626.43 ng/g. The results show that DDTs had been detected at the depth of 0-80 cm. DDT distributions in shallow sediments at the depth of 0-20 cm, 20-40 cm, 40-60 cm and 60-80 cm are 58.1%, 30.8%, 8.2% and 2.9% of the total contents, respectively. The DDTs are primarily distributed at depths of 0-40 cm in shallow sediments. A few DDTs were detected for some samples from 40-80 cm area. The results provide some references for the vertical profile of OCPs in this region.
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陈卫明,邓天龙,张勤,李庆霞.土壤中有机氯农药残留的分析技术研究进展[J].岩矿测试,2009,28(2):151-156. Wania F, Mackay D.Tracking the distribution of persistent organic pollutants[J].Environmental Science and Techology,1996,30(9):390-396. Wania F, Mackay D.Tracking the distribution of persistent organic pollutants[J].Environmental Science and Techology,1996,30(9):390-396.
华小梅,单正军.我国农药的生产,使用状况及其污染环境因子分析[J].环境科学进展,1996,4(2):33-45. 胡璟珂,马健生.吹扫捕集-气相色谱-质谱联用法测定农作物种子表面挥发性有机化合物[J].理化检验:化学分册,2010,46(7):832-833. 万奎元,杨永亮,薛源,武振艳,朱晓华,吴学丽,王晓春,罗松光.长白山表层土壤中有机氯农药和多氯联苯的海拔高度分布特征[J].岩矿测试,2011,30(2):150-154. 朱晓华,杨永亮,路国慧,吴学丽,何俊,罗松光.广州市海珠区有机氯农药污染状况及其土-气交换[J].岩矿测试,2010,29(2):91-96. 薛源,杨永亮,万奎元,吴学丽,朱晓华,王晓春,罗松光.沈阳市细河周边农田土壤和大气中有机氯农药和多氯联苯初步研究[J].岩矿测试,2011,30(1):27-32. 叶传永,陈素华,焦杏春.鄱阳湖龙口地区沉积物中有机氯农药的垂向分布特征[J].岩矿测试,2009,28(4):342-346. 黄圣彪,王子健,康跃惠,马梅.官厅水库沉积物柱状样中有机氯农药的垂直分布特征[J].环境科学研究,2004,17(6):19-21. 刘征涛,张映映,周俊丽,冯流,李霁.长江口表层沉积物中半挥发性有机物的分布[J].环境科学研究,2008,21(2):10-13. 申荣艳,骆永明,章钢娅,李振高,滕应,钱薇.长江三角洲地区城市污泥中多氯联苯和有机氯农药含量与组分研究[J].土壤,2006,38(5):539-546. 朱晓华,杨永亮,路国慧,潘静,吴学丽,何俊,李奇.崇明岛东北部表层土壤及近地表大气中HCHs DDTs污染及土-气交换[J].农业环境科学学报,2010,29(3):444-450. 杨毅,刘敏,许世远, 侯立军,刘华林.长江口潮滩表层沉积物中PCBs和OCPs的分布[J].中国环境科学, 2003,23(2): 215-219. 潘静,杨永亮,何俊,朱晓华,路国慧,刘晓端.崇明岛不同典型功能区表层土壤中有机氯农药分布及风险评价[J].农业环境科学学报,2009,28(11):2286-2292. 付卫东,王岩,刘衍君,张保华.山东聊城市表层土壤有机氯农药残留研究[J].中国环境管理干部学院学报,2009,19(2):78-81. 贺行良,徐婷婷,张媛媛,王江涛,夏宁.环境样品中多环芳烃、多氯联苯和有机氯农药同时检测的分析方法[J].岩矿测试,2010,29(6):757-762. 佟玲, 黄园英, 张玲金,吴淑琪.气相色谱-质谱法测定土壤中有机氯农药及多氯联苯[J].理化检验:化学分册,2009,45(7):858-861. 刘贵春,黄清辉,李建华,柯润辉.长江口南支表层沉积物中有机氯农药的研究[J].中国环境科学,2007,27(4):503-507. Fowler S W. Critical review of selected heavy metal and chlorinated hydrocarbon concentrations in the marine environment[J].Marine Environment Research,1990,29(1):1-64. Fowler S W. Critical review of selected heavy metal and chlorinated hydrocarbon concentrations in the marine environment[J].Marine Environment Research,1990,29(1):1-64.
龚香宜,祁士华,吕春玲,苏秋克,王伟,李敏.泉州湾沉积物柱状样中有机氯农药的垂直分布特征[J].海洋环境科学,2007,26(4):369-372.
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