Zulin Zhang, Huasheng Hong, Xinhong Wang, Jianqing Lin, Weiqi Chen, Li Xu
Key Laboratory of Marine Environmental Science of Ministry of Education, Environmental Science Research Center, Xiamen University, China.
Mar Pollut Bull. 2002;45(1-12):397-402. doi: 10.1016/s0025-326x(02)00094-2.
Seventeen organic phosphorus pesticides (OPs) and 18 organic chlorine pesticides (OCs) at water from Jiulong River Estuary (JLRE) are determined by SPE-GC-(FPD and microECD). The contents of the total OPs (17) ranged from 134.8 to 354.6 ng/l (the mean is 227.2 ng/l). Total OCs concentrations varied from 115.4 to 414.7 ng/l in water (mean 237.7 ng/l). The levels of total hexachlorocyclohexane in water varied from 31.95 to 129.8 ng/l (mean 62.51 ng/l), and those of total DDTs were in the range 19.24-96.64 ng/l (mean 48.69 ng/l). The distribution and behavior characteristics of OPs indicate that five main OPs (methamidophos, dichlorvos, malathion, omethoate and dimethoate) occupied the most part of the total OPs, in addition, the sources of the OPs (mainly from current usage) are not stable. While the OCs mainly came from early application and were more stable. The OPs did not have obvious correlation with the dissoved organic carbon and suspended particulate matter at water from JLRE. It maybe due to the complicated hydrological kinetics in the estuary, and the higher water solubility and weak absorption (with organic matter) action of OPs. When compared with other areas, the OPs and OCs level in JLRE are some moderate.
采用固相萃取-气相色谱法(配备火焰光度检测器和微池电子捕获检测器)测定了九龙江河口(JLRE)水体中的17种有机磷农药(OPs)和18种有机氯农药(OCs)。17种总有机磷农药的含量范围为134.8至354.6 ng/L(平均值为227.2 ng/L)。水体中总有机氯农药浓度在115.4至414.7 ng/L之间(平均值为237.7 ng/L)。水体中总六氯环己烷的含量在31.95至129.8 ng/L之间(平均值为62.51 ng/L),总滴滴涕的含量范围为19.24 - 96.64 ng/L(平均值为48.69 ng/L)。有机磷农药的分布和行为特征表明,五种主要有机磷农药(甲胺磷、敌敌畏、马拉硫磷、氧乐果和乐果)占总有机磷农药的大部分,此外,有机磷农药的来源(主要来自当前使用)不稳定。而有机氯农药主要来自早期使用且更稳定。九龙江河口水体中的有机磷农药与溶解有机碳和悬浮颗粒物没有明显相关性。这可能是由于河口复杂的水文动力学,以及有机磷农药较高的水溶性和较弱的(与有机物)吸附作用。与其他地区相比,九龙江河口的有机磷农药和有机氯农药水平处于中等程度。