M. Pantsarkallio et Pkg. Manninen, SIMULTANEOUS DETERMINATION OF TOXIC ARSENIC AND CHROMIUM SPECIES IN WATER SAMPLES BY ION CHROMATOGRAPHY INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY, Journal of chromatography, 779(1-2), 1997, pp. 139-146
Citations number
25
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
A method based on ion chromatography in conjunction with inductively c
oupled plasma mass spectrometry is presented for simultaneous determin
ation of toxic chromium and arsenic species: Cr(VI), As(III) and As(V)
using KNO3 at pH 9.8 as eluent. Cr(III), dimethylarsinate, monomethyl
arsonate, arsenobetaine and arsenocholine did not interfere with the a
nalysis, since Cr(III) was eliminated before analysis and As species w
ere separated from the analytes. The advantages and disadvantages of g
radient and isocratic elution in trace speciation analysis by ion chro
matography are discussed. With the method described, Cr(VI), As(III) a
nd As(V) could be analyzed at a concentration level of 0.5 mu g/l. An
application of the proposed method is presented for waste water and dr
inking water analysis. (C) 1997 Elsevier Science B.V.