气候变化领域集成服务门户(CCPortal): Evaluation of sorption surface materials for reactive mercury compounds

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DOI	10.1016/j.atmosenv.2020.117836
	Evaluation of sorption surface materials for reactive mercury compounds
	Dunham-Cheatham S.M.; Lyman S.; Gustin M.S.
发表日期	2020
ISSN	1352-2310
卷号	242
英文摘要	Sorption surfaces are commonly used to collect atmospheric mercury compounds, with a range of materials used by the mercury research community that have different levels of performance. Here, five polymer-based membranes were loaded with ambient reactive mercury and compared to 2 widely used sorption surface materials: nylon and cation exchange membranes. Only 1 tested material, polyethersulfone, performed similarly to the cation exchange membrane; the remaining tested materials sorbed significantly less mercury, and many had significantly higher blank mercury amounts than the cation exchange membrane. Nylon was the only material that was compatible with thermal desorption analysis, as the remaining materials physically degraded or negatively affected the analyzer; however, nylon was not amenable for quantitative analyses under all ambient conditions. Additional testing of the nylon and cation exchange membrane demonstrated that ambient reactive mercury compounds were more stable on both materials than high concentrations of single-source gaseous oxidized mercury compounds. Single-source gaseous oxidized mercury compounds were significantly lost and/or transformed within less than 80 days of storage, whereas ambient reactive mercury compounds were stable on nylon and cation exchange membranes after 190 days of storage. However, minimizing sampling and storage duration, along with exposure of sampled membranes to ambient air, to reduce biasing results is prudent. © 2020 Elsevier Ltd
关键词	Cation exchange membrane Nylon Reactive mercury Retention Thermal desorption Transformations
语种	英语
scopus关键词	Membranes; Polyamides; Positive ions; Rayon; Sorption; Storage (materials); Ambient conditions; Atmospheric mercury; Cation exchange membranes; Gaseous oxidized mercuries; Polyethersulfones; Research communities; Surface materials; Thermal desorption analysis; Mercury compounds; mercury derivative; nylon; polyethersulfone; polymer; gas flow; ion exchange; membrane; mercury (element); oxidation; reactivation; reactive transport; sampling; sorption; ambient air; anion exchange; Article; cation exchange; controlled study; desorption; priority journal
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/248931
作者单位	Department of Natural Resources & Environmental Science, University of Nevada, Reno, 1664 N. Virginia Street, Mail Stop 186, Reno, NV 89557, United States; Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322, United States
推荐引用方式 GB/T 7714	Dunham-Cheatham S.M.,Lyman S.,Gustin M.S.. Evaluation of sorption surface materials for reactive mercury compounds[J],2020,242.
APA	Dunham-Cheatham S.M.,Lyman S.,&Gustin M.S..(2020).Evaluation of sorption surface materials for reactive mercury compounds.ATMOSPHERIC ENVIRONMENT,242.
MLA	Dunham-Cheatham S.M.,et al."Evaluation of sorption surface materials for reactive mercury compounds".ATMOSPHERIC ENVIRONMENT 242(2020).