Simultaneous determination of antimony, arsenic and selenium in natural waters by means of hydride generation coupled to plasma source mass spectrometry
作者： Conny Haraldsson , Marianne Pollak , Peder Öhman
DOI: 10.1039/JA9920701183
关键词:
摘要: The hydride generation batch technique was used to determine simultaneously antimony, arsenic and selenium in natural waters. volatilized hydrides, formed by adding sodium tetrahydroborate the acidified sample, were purged out of sample transported directly plasma means nebulizer gas flow. In this method, ammonium pyrrolidin-1-yldithioformate (APDC) replaced iodide as reducing agent for antimony because interferes selenium. detection limits a 10 ml defined three times standard deviation blank, 1.5 ng l–1 arsenic, 2.4 6.3 precision each element better than 6%. linear ranges method checked up 2 µg l–1, but these significantly higher, with carryover between samples being limiting factor at high concentrations. total analysis time single min.
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