| 珠江干流河口水体有机氯农药的时空分布特征 |
| 摘要点击 2357 全文点击 2439 投稿时间：2003-06-21 修订日期：2003-10-24 |
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| 中文关键词 有机氯农药 时空分布 珠江干流河口 |
| 英文关键词 organochlorine pesticides spatial and temporal distribution the Pearl River Artery Estuary |
| 作者 | 单位 | | 杨清书1,2, | 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州,510640 | | 麦碧娴1, | 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州,510640 | | 傅家谟1, | 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州,510640 | | 盛国英1, | 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州,510640 | | 王静新2 | 中山大学河口海岸研究所,广州,510275 |
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| 中文摘要 |
| 珠江干流河口6个水样均检出有21种有机氯农药(OCPs).OCPs的定量分析结果显示,洪、枯季珠江干流河口水体中OCPs总量(颗粒相和溶解相)分别是9.7～26.3ng/L、41.7～122.5ng/L;珠江干流河口水体中∑六六六和∑其它OCPs的浓度(＞＞)∑DDTs的浓度.OCPs含量的季节变化明显,枯季水体中OCPs的含量明显高于洪季的含量.OCPs的含量和分布表明,珠江干流河口沿程存在不同的OCPs化合物输入,特别是东江网河区OCPs的输入对狮子洋水体中OCPs含量的影响较为突出,这种非点源污染特性在洪季表现更为突山.
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| 英文摘要 |
| Six water samples were collected, and twenty one compounds of organochlorine pesticides (OCPs) in surface water from the Pearl River Artery estuary were analyzed quantitatively, based on USEPA 8000 series methods and under quality assurance and quality control (QA/QC). The total (particulate plus dissolved phase) concentrations of OCPs in surface water from the Pearl River Artery estuary in both high flow season and low flow season were 9.7ng/L～26.3ng/L and 41.7ng/L～122.5ng/L respectively. The concentration of total HCHs and total other OCPs was much higher than that of DDTs. The seasonality of the concentration of OCPs was significantly, and the level of OCPs in low flow season was higher than that of OCPs in high flow season. The spatial and temporal distribution of OCPs suggested that there were significant differences of OCPs between the East River(Dongjiang) network and Guangzhou channel and the nonpoint source pollution of OCPs was found in the Pearl River Artery estuary, particularly in high flow season. |
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