气候变化领域集成服务门户(CCPortal): Improvement of quantification and identification of atmospheric reactive mercury

CCPortal

DOI	10.1016/j.atmosenv.2020.117307
	Improvement of quantification and identification of atmospheric reactive mercury
	Luippold A.; Gustin M.S.; Dunham-Cheatham S.M.; Zhang L.
发表日期	2020
ISSN	1352-2310
卷号	224
英文摘要	The mercury (Hg) research community is in need of a method to quantify reactive, gaseous oxidized, and particulate-bound Hg compounds. The University of Nevada, Reno-Reactive Mercury Active System (UNR-RMAS) was designed to quantify reactive Hg, as well as identify compounds present in the atmosphere. This system has undergone significant improvements and is now designated as UNR-RMAS 2.0. The system physical design, flow management, and sample analytical methods have been improved. A new sample manifold increased reliability and consistency of air flow. The thermal desorption method for identification of gaseous oxidized Hg compounds was improved with respect to temporal resolution and temperature management. A statistical method was developed that allows for quantifying reactive Hg (RM) compounds. In addition, analyses of anions on nylon membranes was investigated as means of understanding air mass chemistry and potential RM compounds. The results of these improvements are demonstrated through comparison of a year of UNR-RMAS 2.0 sample data collected in 2018–2019 with that collected in 2014–2015. Implemented changes resulted in improved sample replication and resolution of RM quantification and speciation. © 2020 Elsevier Ltd
关键词	Cation exchange membrane GOM Pyrolyzer Thermal desorption UNR-RMAS
语种	英语
scopus关键词	Chemical analysis; Thermal desorption; Analytical method; Cation exchange membranes; Pyrolyzer; Research communities; Temperature management; Temporal resolution; University of Nevada; UNR-RMAS; Mercury compounds; mercury; nylon; air mass; desorption; ion exchange; mercury (element); reactive transport; speciation (chemistry); temperature effect; airflow; Article; atmosphere; desorption; gas; priority journal; species differentiation; temperature; Nevada; United States
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249315
作者单位	Department of Natural Resources and Environmental Science, University of Nevada-Reno, Reno, NV 89557, United States; School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
推荐引用方式 GB/T 7714	Luippold A.,Gustin M.S.,Dunham-Cheatham S.M.,et al. Improvement of quantification and identification of atmospheric reactive mercury[J],2020,224.
APA	Luippold A.,Gustin M.S.,Dunham-Cheatham S.M.,&Zhang L..(2020).Improvement of quantification and identification of atmospheric reactive mercury.ATMOSPHERIC ENVIRONMENT,224.
MLA	Luippold A.,et al."Improvement of quantification and identification of atmospheric reactive mercury".ATMOSPHERIC ENVIRONMENT 224(2020).