Determination of microtraces of Bi, Co, Cu, Fe, Mn, In, Ni, Pb, Sb and Zn in phosphoric acid and ammonium phosphate |
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| Authors: | I Havezov G Emrich E Ivanova P Koehler Nguyen van Ha N Jordanov und K Licht |
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| Institution: | (1) Institut für Allgemeine und Anorganische Chemie der Bulgarischen Akademie der Wissenschaften, BG-1040 Sofia, Bulgarien;(2) Zentralinstitut für Physikalische Chemie der Akademie der Wissenschaften der DDR, DDR-1199 Berlin, Deutsche Demokratische Republik |
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| Abstract: | Summary Methods for the determination of Bi, Co, Cu, Fe, Mn, In, Ni, Pb, Sb and Zn in phosphoric acid by ETA-AAS using the platform technique were developed. The detection limits are in the range of 1 to 30 ppb for conc. H3PO4. Relative standard deviations of 5–10% at 10 times the detection limits were achieved. The results obtained by five different atomic spectroscopic methods are in good agreement (direct Zeeman-ETA-AAS, D2-ETA-AAS and FAAS; OES and FAAS after trace extraction). |
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