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Agbaba Danica Novovic Dragana Karljiković-Rajić Katarina Marinković Valentina 《平面色谱法杂志一现代薄层色谱法》2004,17(3):169-172
JPC – Journal of Planar Chromatography – Modern TLC - A method has been developed for separation of omeprazole and pantoprazole, and their impurities omeprazole sulfone and... 相似文献
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Spectrochemical determination of trace As, Fe, Hg, Mn, and Pb by an argon-stabilized U-shaped DC arc
Argon-stabilized U-shaped DC arc with a system for aerosol introduction was used for the determination of As, Fe, Hg, Mn,
and Pb. By applying a computer program performing a time integration of the registered signals and by optimizing the working
conditions of an U-shaped arc plasma, the detection capability for As, Fe, Hg, Mn, and Pb was improved, which contributed
to the lowering of the detection limits. The lowest detection limits for Fe, Mn, and Pb were achieved during an integration
time of 20 s, and for As and Hg during an integration time of 30 s, and their values were 1.1, 0.1, 0.9, 15, and 2.6 ng/mL,
respectively. The detection limits obtained by our method with optimal integration times were compared with the detection
limits obtained using other methods: inductively coupled plasma-atomic emission spectrometry (ICP-AES), directly coupled plasma-atomic
emission spectrometry (DCP-AES), microwave-induced plasma-atomic emission spectrometry (MIP-AES), inductively coupled plasma-mass
spectrometry (ICP-MS), and an improved thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS).
The text was submitted by the authors in English. 相似文献
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