caa a22 4500 465747205 CHVBK 20180323111823.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00321970 doi (NATIONALLICENCE)springer-10.1007/BF00321970 On the direct analysis of solid samples by graphite furnace atomic absorption spectrometry [Elektronische Daten] [D. Baxter, W. Frech] Summary: We have studied some limitations of the solid sampling, cup-in-tube technique by comparison with a constant temperature two-step atomiser and found consistently lower vapour-phase temperatures and greater interferences in the former. With the former, higher vapour-phase temperatures and improved analytical results for lead and cadmium were found using Pd(NO3)2+Mg(NO3)2 instead of NH4H2PO4+Mg(NO3)2 as modifier. Investigations of methods to extend the useful calibration range revealed reduced vapour-phase temperatures in the presence of a convective gas flow during atomisation, and a greater potential for errors using non-resonance lines. With respect to the latter, the absorbance signal is much more sensitive to matrix induced changes in the temperature interval in which atoms are formed compared to resonance lines. Furthermore, at the lead 261.4 nm non-resonance line we observed overcompensation errors caused by cobalt when using a Zeeman-effect system, and undercorrection due to the AlCl(g) molecule with a continuum source background corrector. Springer-Verlag, 1990 Baxter D. Department of Analytical Chemistry, University of Umeå, S-90187, Umeå, Sweden aut Frech W. Department of Analytical Chemistry, University of Umeå, S-90187, Umeå, Sweden aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 337/3(1990-01-01), 253-263 0937-0633 337:3<253 1990 337 216 https://doi.org/10.1007/BF00321970 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00321970 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baxter D. Department of Analytical Chemistry, University of Umeå, S-90187, Umeå, Sweden aut NATIONALLICENCE 700 1- Frech W. Department of Analytical Chemistry, University of Umeå, S-90187, Umeå, Sweden aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 337/3(1990-01-01), 253-263 0937-0633 337:3<253 1990 337 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer