Hg isotopic composition and total Hg mass fraction in NIES Certified Reference Material No. 28 Urban Aerosols.

ABSTRACT: An interlaboratory study on the National Institute for Environmental Studies (NIES) certified reference material (CRM) No. 28 Urban Aerosols, collected on the filters of a central ventilating system in a building in Beijing city center, was performed to obtain informative values of Hg isotopic composition and total Hg (THg) mass fraction. The THg mass fraction was determined by four organizations using atomic absorption spectrometry; it resulted in the mean value of 1.19 ± 0.12 mg/kg (2SD, n = 24). The Hg isotopic composition of the CRM was measured and intercompared at two different institutions by cold vapor generation system coupled to multicollector inductively coupled plasma mass spectrometry. Subsequently, a conventional dissolution method that uses a mixture of HNO₃/HCl/H

SUBMITTER: Yamakawa A 

PROVIDER: S-EPMC7329778 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature