The use of direct sample insertion into a nitrogen-argon inductively coupled plasma for emission spectrometry-I: Technique optimization and application to the analysis of aluminium oxide
作者： G. Zaray , J.A.C. Broekaert , F. Leis
DOI: 10.1016/0584-8547(88)80050-8
关键词: Argon 、 Aluminium oxides 、 Analytical chemistry 、 Detection limit 、 Aluminium oxide 、 Graphite 、 Chemistry 、 Copper 、 Calibration curve 、 Inductively coupled plasma
摘要: Abstract The determination of trace elements in aluminium oxide with the aid direct sample insertion inductively coupled plasma atomic emission spectrometry (ICP-AES) has been studied. form and shape graphite cups containing as well gas flows other ICP parameters were optimized dry solution residues zinc, copper strontium. It was found that after mixing proportion 1:1 powder briquetting pellets 10–20 mg, relatively volatile such Cd, Cu, Mg Zn could be volatilized detected down to μg g level. For titanium, which forms refractory carbides, effect different volatilization aids (NH4C1, AgCl, BaF2 PTFE) With addition PTFE quantitative determinations are possible a detection limit 7 is obtained. Relative standard deviations case peak areas obtained from time-resolved simultaneous measurements line background intensities at order 5 % calibration curves linear over least one magnitude.
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