Oxidative Trapping of Unstable Gaseous Arsines by Hydrogen Peroxide

Autor:	Shibata Yasuyuki, Nakamiya Kunichika
Rok vydání:	2011
Předmět:	Hot spring Chemistry Biochemistry (medical) Clinical Biochemistry Inorganic chemistry Trapping Mass spectrometry Biochemistry Arsenic acid Trimethylarsine Analytical Chemistry chemistry.chemical_compound Arsine Oxidizing agent Electrochemistry Hydrogen peroxide Spectroscopy
Zdroj:	Analytical Letters. 44:2780-2791
ISSN:	1532-236X 0003-2719
DOI:	10.1080/00032719.2011.565443
Popis:	Hydrogen peroxide was employed as an oxidizing agent for a new method for trapping unstable gaseous arsines. Resin cartridges wetted with hydrogen peroxide trapped over 90% of the gaseous arsines (arsine, methylarsine, dimethylarsine, and trimethylarsine) from laboratory samples. The oxidized products (arsenic acid, methylarsonic acid, dimethylarsinic acid, and trimethylarsine oxide) are relatively stable in Milli-Q water, so they could be extracted from the cartridges and analyzed by liquid chromatography-inductively coupled plasma-mass spectrometry at nanogram per milliliter concentrations. We also used our new method to determine arsine concentrations in field samples from Nishinomaki mine and Tamagawa hot spring in Japan. Inorganic arsine was detected at the highest concentration for each sampling point, and trimethylarsine was observed in the Nishinomaki mine and at one sampling site of the Tamagawa hot spring. This trimethylarsine may have been produced by a variety of microorganisms. Supplementary ...
Databáze:	OpenAIRE
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