摘要
利用半透膜被动采样技术(SPMD)和固相萃取技术(SPE)对黄河兰州段八盘峡、包兰桥等六个监测断面的几种典型多环芳烃(PAHs)和壬基酚类(NPs)物质进行了采集测定。结果显示所选取的几种目标污染物在各监测点均有不同程度的检出。其中,几种PAHs在监测点水样中SPE测定的浓度为0.04~21.57g·L-1,而在SPMD中的浓度为842~99139g·L-1,富集倍数达到了103~105;NPs在监测点水样中SPE测定的浓度为0.04~2.10g·L-1,在SPMD中的浓度为80-81394g·L-1,富集倍数达到了103~104。利用SPMD数学模型,根据污染物在SPMD类酯中浓度推算出的污染物在水体中的平均浓度值,和利用SPE测得的水样中污染物的实际浓度值具有较高的相关性。该实验研究为发展SPMD技术作为黄河中有机污染物的常规监测手段提供一定的理论依据。
Semipermeable membrane devices (SPMDs) and solid-phase extraction (SPE) were applied to sample several typical PAHs and NPnEO (n=0~2) in water at 6 sampling sites in Lanzhou reach of Yellow River. All the target pollutants were detected at different concentrations at each site. The concentrations of typical PAHs and NPnEO (n=0~2) ranged from 0.04~21.57 g·L^-1 and from 0.04~2.10 g·L^-1 in water, from 842~99 139 g·L^-1 and from 80~81 394 g·L^-1 in SPMD-triolein, respectively. The enrichment factors for PAHs and NPnEO (n=0~2) were up to 10^3~10^5 and 10^3~10^4, respectively. Aqueous concentration of target pollutants (Cw) calculated from SPMD data (CSPMD) by SPMD model were compared with CspE and the correlativity between them was good. It is feasible to develop SPMD technology to be a routine method to monitor organic contaminants in Yellow River.
出处
《生态环境》
CSCD
北大核心
2006年第3期481-485,共5页
Ecology and Environmnet
基金
国家自然科学基金委员会
水利部黄河水利委员会黄河研究联合基金重点项目(50239060)
关键词
半透膜被动采样
黄河兰州段
有机污染物
semipermeable membrane devices (SPMDs)
Lanzhou reach of Yellow River
organic pollutants