TY - JOUR
T1 - Flow injection sorbent extraction with dialkyldithiophosphates as chelating agent for the determination of zinc by flame atomic absorption spectrometry
AU - Ma, Renli
AU - Van Mol, Willy
AU - Adams, Freddy
PY - 1995/6/20
Y1 - 1995/6/20
N2 - Dialkyldithiophosphates, (RO)2P(S)S-, were used as the complexing agent for flow injection on-line sorbent extraction for the determination of zinc by flame atomic absorption spectrometry. The extractability with diethyl-, di-n-propyl-, di-2-propyl-, di-n-butyl-, di-isobutyl-, di-sec.-butyl-, di-n-pentyl- and di-n-hexyldithiophosphates was compared in respect of the effects of pH, alkyl group, masking agent and reagent concentration. Di-sec.-butyldithiophosphate (0.5%, m/v) at pH 3 with 0.1 M citrate as a masking agent for iron, was used for the determination of zinc in a number of certified biological and environmental reference materials from the Community Bureau of Reference (BCR). All analytical results were in good agreement with the certified values. The detection limit (3σ) of peak height measurement, using a flow spoiler in the spray chamber, was 0.5 μg l-1 with an enhancement factor of 35 for a 20-s sample loading at 8.7 ml min-1.
AB - Dialkyldithiophosphates, (RO)2P(S)S-, were used as the complexing agent for flow injection on-line sorbent extraction for the determination of zinc by flame atomic absorption spectrometry. The extractability with diethyl-, di-n-propyl-, di-2-propyl-, di-n-butyl-, di-isobutyl-, di-sec.-butyl-, di-n-pentyl- and di-n-hexyldithiophosphates was compared in respect of the effects of pH, alkyl group, masking agent and reagent concentration. Di-sec.-butyldithiophosphate (0.5%, m/v) at pH 3 with 0.1 M citrate as a masking agent for iron, was used for the determination of zinc in a number of certified biological and environmental reference materials from the Community Bureau of Reference (BCR). All analytical results were in good agreement with the certified values. The detection limit (3σ) of peak height measurement, using a flow spoiler in the spray chamber, was 0.5 μg l-1 with an enhancement factor of 35 for a 20-s sample loading at 8.7 ml min-1.
KW - Atomic absorption spectrometry
KW - Biological materials
KW - Dialkyldithiophosphates
KW - Environmental samples
KW - Flow injection
KW - Waters
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=0029065287&partnerID=8YFLogxK
U2 - 10.1016/0003-2670(95)00053-3
DO - 10.1016/0003-2670(95)00053-3
M3 - Article
AN - SCOPUS:0029065287
SN - 0003-2670
VL - 309
SP - 395
EP - 403
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 1-3
ER -