The Impact of Deliquescence and pH on Cr Speciation in Ambient PM Samples
作者： Mehdi Amouei Torkmahalleh , Lin Lin , Thomas M. Holsen , Don H. Rasmussen , Philip K. Hopke
DOI: 10.1080/02786826.2011.654285
关键词:
摘要: The 2 chromium oxidation states found in ambient atmospheric particulate matter (PM) are trivalent [Cr(III)] and hexavalent [Cr(VI)] chromium. Cr(III) is a trace element essential for the proper function of living organisms. However, Cr(VI) toxic exposure to may lead cancer, nasal damage, asthma, bronchitis, pneumonitis, inflammation, dermatitis, skin allergies. Therefore, it important accurately discriminate between these species PM samples. This work focuses on effect deliquescence pH speciation filter samples airborne collected northeastern USA. relative humidity (DRH) liquid water mass content determined particle good agreement with previously reported values ammonium sulfate nitrate suggesting that salts control hygroscopic properties particles loss increases significantly up 85% at...
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