Department of Chemistry, North Dakota State University, Fargo, ND 58105-5516, USA.
Talanta. 2003 May 1;59(6):1199-211. doi: 10.1016/S0039-9140(03)00033-X.
This article presents a thorough investigation of quantitative parameters for the analysis of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and polychlorinated dibenzofurans (PDBFs) partitioning between an octadecyl silica extraction membrane and microliters of an n-alkane solvent spiked on the surface of the membrane. Shpol'skii spectrometry is directly performed on the surface of the membrane with the aid of a cryogenic fiber optic probe. The analyte concentration in the layer of Shpol'skii solvent follows a linear relationship with the analyte concentration in the water sample and the same is observed for the phosphorescence signal of the cryogenic probe. The accuracy and precision needed for quantitative analysis in aqueous samples is demonstrated. The analytical figures of merit show the feasibility to determine organic pollutants at the parts-per-trillion level with minimum solvent consumption.
本文深入研究了多环芳烃（PAHs）、多氯联苯（PCBs）和多氯二苯并呋喃（PDBFs）在十八烷基硅烷萃取膜和膜表面上注入的微升 n-烷烃溶剂之间分配的定量参数。Shpol'skii 光谱法直接在膜表面上进行，借助于低温光纤探针。Shpol'skii 溶剂层中的分析物浓度与水样中的分析物浓度呈线性关系，低温探针的磷光信号也是如此。证明了在水样中进行定量分析所需的准确性和精密度。分析的优点表明，通过最小的溶剂消耗，有可能以万亿分之几的水平测定有机污染物。
