Laboratoire de radioécologie, Département de chimie, Université Laval, 1045 Avenue de la Médecine, Québec, QC, G1V 0A6, Canada.
Anal Methods. 2022 Jan 6;14(2):199-202. doi: 10.1039/d1ay01862k.
A new sequential cloud point extraction (CPE) procedure was developed and validated for the determination of Pb and Po by ICP-MS/MS and alpha spectrometry, respectively. Two distinct CPE systems using 4',4''(5'')-di--butyldicyclohexano-18-crown-6 and ,,','-tetraoctyldiglycolamide as chelating agents were performed sequentially on the same sample. Method detection limits of 13 and 3.5 mBq L, were achieved for Pb and Po, respectively. The sequential approach shows its outstanding versatility and proficiency to rapidly extract, detect, and quantify both radionuclides in various matrices for a wide range of activities.
建立了一种新的顺序浊点萃取（CPE）程序，分别采用电感耦合等离子体质谱/质谱（ICP-MS/MS）和α谱法测定 Pb 和 Po。使用 4'，4''（5'）-二-正丁基二环己烷-18-冠-6 和,,','-四辛基二甘醇酰胺作为螯合剂的两种不同 CPE 系统在同一样品上依次进行。对于 Pb 和 Po，方法检测限分别达到 13 和 3.5 mBq/L。顺序方法具有出色的通用性和效率，能够快速提取、检测和定量各种基质中广泛活性范围内的两种放射性核素。
