SAMPLING AND DETERMINATION OF GAS-PHASE DIVALENT MERCURY IN THE AIR USING A KCL COATED DENUDER

Authors
XIAO Z SOMMAR J WEI S LINDQVIST O
Citation
Z. Xiao et al., SAMPLING AND DETERMINATION OF GAS-PHASE DIVALENT MERCURY IN THE AIR USING A KCL COATED DENUDER, Fresenius' journal of analytical chemistry, 358(3), 1997, pp. 386-391
Citations number
19
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
358
Issue
3
Year of publication
1997
Pages
386 - 391
Database
ISI
SICI code
0937-0633(1997)358:3<386:SADOGD>2.0.ZU;2-2
Abstract
KCl coated denuders were employed for the measurement of divalent merc ury (Hg2+) species in the air. Laboratory tests show that gaseous Hg2 can be collected by the denuder with an average efficiency of 98% and elemental Hg will pass through it freely. Hg2+ trapped in the denuder can be quantitatively extracted by 1 mol/L HCl and analyzed by the me thod of SnCl2 reduction-CVAFS determination. Hg2+ concentrations of 0. 04-0.15 ng m(-3) corresponding to about 2-9% of the total gaseous merc ury in the ambient air were determined at several sampling locations.