Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5782930 | Chemical Geology | 2017 | 9 Pages |
Abstract
This study presents a method for the isotope analysis of gaseous elemental mercury (GEM, Hg0(g)) using cold vapor multicollector inductively coupled plasma mass spectrometry. Isotopic compositions of Hg in the atmospheric samples collected from urban-industrial (Ichikawa) and coastal (South Boso Peninsula) regions in Chiba, Japan were investigated. Values of mass-dependent fractionation (MDF) of δ202Hg range from â 2.36â° to â 0.11â° and mass-independent fractionation (MIF) of Î199Hg range between â 0.31â° and 0.01â°. There was a rough linear correlation between δ202Hg values and Hg concentrations of our GEM samples (r2 = 0.31, p < 0.05). Also, Î199Hg values were positively correlated with SO2 concentrations; however, air mass source(s) was not identified using NOAA Hybrid Single-Particle Lagrangian Integrated Trajectory model. We suggest that our sampling site, Ichikawa, was largely impacted by nearby anthropogenic sources (high GEM concentration with low δ202Hg value), and a mixing with back ground air (low GEM concentration with high δ202Hg value).
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Akane Yamakawa, Katsutoshi Moriya, Jun Yoshinaga,