MacLeod Sherri L, McClure Evelyn L, Wong Charles S
University of Alberta, Department of Chemistry, Edmonton, Canada.
Environ Toxicol Chem. 2007 Dec;26(12):2517-29. doi: 10.1897/07-238.1.
Aqueous sampling rates for 25 pharmaceuticals and personal care products (PPCPs) were determined on the commercially available passive Polar Organic Chemical Integrative Sampler (POCIS). To date, POCIS calibration has only been carried out for a handful of compounds. Uptake rates were 0.040 to 2.462 L/d under conditions of flowing water; quiescent conditions resulted in uptake rates between 0.016 and 0.223 L/d. The uptake of many PPCPs appears to be boundary-layer controlled, as indicated by higher sampling rates under flowing conditions. Sampling rates were corrected for analyte dissipation rates, and some correlations with octanol-water partition coefficients were noted. Field deployments of POCIS in wastewater effluent and surface waters had time-weighted average concentrations derived from laboratory calibrations that were consistent with regular grab samples. This work indicates that POCIS can be used as a quantitative tool for measuring PPCPs in the aquatic environment.
利用市售的被动式极性有机化合物综合采样器（POCIS）测定了25种药品和个人护理产品（PPCPs）的水样采集速率。迄今为止，POCIS仅针对少数化合物进行过校准。在流水条件下，摄取速率为0.040至2.462升/天；静态条件下的摄取速率在0.016至0.223升/天之间。如流水条件下较高的采样速率所示，许多PPCPs的摄取似乎受边界层控制。对采样速率进行了分析物消散速率校正，并注意到与正辛醇-水分配系数的一些相关性。POCIS在废水排放口和地表水的现场部署所得到的时间加权平均浓度与实验室校准结果一致，且与常规采集样本相符。这项工作表明，POCIS可作为一种定量工具用于测量水生环境中的PPCPs。
