Extraction and Determination of Total Bromine, Iodine, and Their Species in Atmospheric Aerosol
作者： Si-Qi XU , Zhou-Qing XIE , Wei LIU , Hong-Xia YANG , Bing LI
DOI: 10.1016/S1872-2040(09)60026-8
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摘要: Abstract The bromine and iodine species in aerosol samples were extracted using ultrapure water ultrasonic method with different extraction time pressurizing decomposition dilute ammonia. efficiency of the stability compared under conditions. results showed that (1) decomposition, which might destroy some unknown form organic iodine, was relatively higher than those method; (2) I− unstable added standard cellular blank filter during ultrasonic-assisted for long time; (3) optimum condition 5 min. Moreover, suitability glass microfiber (GF) (CF) also compared, indicated GF is favorable analysis CF kinds Based on results, HPLC-ICPMS approach developed to analyze atmospheric aerosol. total bromine, their collected from Hefei then determined accordingly. levels aerosols 883 231 pmol m−3, respectively. Br−was found be dominant 68%, while BrO3− undetectable. 70% occurred as unidentified forms including soluble insoluble iodine.
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