Issue 10, 2023

Modified MSIS chamber as a novel gas–liquid separator coupled with the photochemical vapor generation of trace mercury with MP-AES detection

Abstract

New hyphenation of a continuous flow photochemical vapor generator (PVG) to a modified multimode sample introduction system (MSIS) used as a gas–liquid separator and microwave plasma atomic emission spectrometry (MP-AES) was proposed for the analysis of trace mercury. The widened MSIS bottom inlet contributes to an increase in Hg0 mass transfer in the gas–liquid separator, allowing mercury determination by MP-AES. After optimizing the PVG reactor conditions and MP-AES instrument parameters, a limit of detection (LOD) of 0.25 ppb was obtained for Hg2+. The applicability of the PVG-MSIS-MP-AES method was subsequently demonstrated for trace mercury analysis in two soil CRMs – ERM-CC135a (Contaminated Brickworks soil) and CRM005 (Sewage Amended soil).

Graphical abstract: Modified MSIS chamber as a novel gas–liquid separator coupled with the photochemical vapor generation of trace mercury with MP-AES detection

Article information

Article type
Technical Note
Submitted
23 Jun 2023
Accepted
29 Aug 2023
First published
30 Aug 2023

J. Anal. At. Spectrom., 2023,38, 1920-1926

Modified MSIS chamber as a novel gas–liquid separator coupled with the photochemical vapor generation of trace mercury with MP-AES detection

D. Stoitsov, V. Kmetov and A. Canals, J. Anal. At. Spectrom., 2023, 38, 1920 DOI: 10.1039/D3JA00207A

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