Optimization of a sequential extraction procedure for trace elements in Arctic PM₁₀.

ABSTRACT: In this work, a two-step sequential extraction scheme for the determination of trace elements in Arctic PM₁₀ samples was optimized by using two certified reference materials (CRMs). By means of an experimental design for qualitative variables, the five most common extracting solutions for particulate matter (PM) sequential extraction (high purity water (HPW), 0.032 M HNO₃, 0.022 M HCl, 0.11 M CH₃COOH, and 0.012 M CH₃COOH/CH₃COONH₄ buffer) and two different extraction methods (stirring and ultrasounds) were compared. The purpose of the study was the identification of the procedure which gives the best estimation of the anthropogenic portion of the elements present in PM₁₀ samples. The use of ultrasounds instead of

SUBMITTER: Conca E 

PROVIDER: S-EPMC7533259 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature