Fractions of arsenic and selenium in fly ash by ultrasound-assisted sequential extraction.

ABSTRACT: Sequential extraction has been validated as an effective method to assess the fractions of elements in fly ash. However, the time consumption and high labor costs limit the application of the conventional sequential extraction (CSE) for fast screening of elemental fractions in fly ash. In this study, two ultrasound-assisted sequential extraction (UASE) methods were developed for fast analysis of arsenic (As) and selenium (Se) fractions in fly ash (FA). The parameters of UASE were optimized by comparing the results of As and Se obtained from UASE with those values observed via CSE. The operation time of sequential extraction procedures for As and Se were shortened from 24.5 h to less than 90 min. A certified reference material (CRM, GBW08401) and real fly ash samples were applied to

SUBMITTER: He KQ 

PROVIDER: S-EPMC9050076 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature