Determination of total Sb, Se, Te, and Bi and evaluation of their inorganic species in garlic by hydride-generation-atomic-fluorescence spectrometry.
A sensitive and simple analytical method has been developed for determination of Sb(III), Sb(V), Se(IV), Se(VI), Te(IV), Te(VI), and Bi(III) in garlic samples by using hydride-generation-atomic-fluorescence spectrometry (HG-AFS). The method is based on a single extraction of the inorganic species by sonication at room temperature with 1 mol L(-1) H2SO4 and washing of the solid phase with 0.1% (w/v) EDTA, followed by measurement of the corresponding hydrides generated under two different experimental conditions directly and after a pre-reduction step. The limit of detection of the method was 0.7 ng g(-1) for Sb(III), 1.0 ng g(-1) for Sb(V), 1.3 ng g(-1) for Se(IV), 1.0 ng g(-1) for Se(VI), 1.1 ng g(-1) for Te(IV), 0.5 ng g(-1) for Te(VI), and 0.9 ng g(-1) for Bi(III), in all cases expressed in terms of sample dry weight.
Matos Reyes
M N
MN
Department of Analytical Chemistry, University of Valencia, 50 Dr Moliner Street, 46100 Burjassot, Valencia, Spain.
Cervera
M L
ML
de la Guardia
M
M
D000965:Antimony / Q000032:analysis; D001729:Bismuth / Q000032:analysis; D005737:Garlic / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D007287:Inorganic Chemicals / Q000032:analysis*; D007477:Ions / Q000737:chemistry; D018551:Solanum lycopersicum / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D018036:Selenium Compounds / Q000032:analysis; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods*; D013464:Sulfuric Acids; D013691:Tellurium / Q000032:analysis
D007287:Inorganic Chemicals; D007477:Ions; D018036:Selenium Compounds; D013464:Sulfuric Acids; D006859:Hydrogen; D000965:Antimony; D013691:Tellurium; C033158:sulfuric acid; D001729:Bismuth