Zhang Li-Peng, Wang Xin-Hong, Li Yong-Yu, Wu Yu-Ling, Zhang Zu-Lin
Huan Jing Ke Xue. 2014 Jan;35(1):117-22.
Polar organic chemical integrative sampler (POCIS) has been recently documented for the detection of polar organic compounds in the environment to achieve a time weighted average concentration. So it is an important complimentary for spot sampling. POCIS was examined for its sampling efficiency for four kinds of estrogenic compounds (EDCs: estrone, 17alpha-ethynylestradiol, 17beta-estradiol, estriol) in this study. The kinetic studies showed an integrative uptake up to 7 d and the sampling rate decreased as the temperature increased( RSD > 12%). As for different concentrations of target compounds, the sampling rate was not affected by the concentrations (RSD < 5%). After laboratory experiments, an environmental field study was performed in Jiulong River. The results showed that there was a relatively good correlation between the measured and calculated values (r2 = 0.7209, P < 0.001). It demonstrated that POCIS can be used in aquatic field systems.
极性有机化合物综合采样器（POCIS）最近被用于检测环境中的极性有机化合物，以获得时间加权平均浓度。因此，它是现场采样的重要补充。本研究考察了POCIS对四种雌激素化合物（内分泌干扰物：雌酮、17α-乙炔基雌二醇、17β-雌二醇、雌三醇）的采样效率。动力学研究表明，综合采样时间长达7天，采样速率随温度升高而降低（相对标准偏差>12%）。对于不同浓度的目标化合物，采样速率不受浓度影响（相对标准偏差<5%）。经过实验室实验后，在九龙江进行了野外环境研究。结果表明，测量值与计算值之间存在较好的相关性（r2 = 0.7209，P < 0.001）。这表明POCIS可用于水生野外系统。
