[Direct determination of trace lead in chestnut by graphite furnace atomic absorption spectrometry with slurry sampling].
Guang Pu Xue Yu Guang Pu Fen Xi
; 25(4): 570-2, 2005 Apr.
Article
em Zh
| MEDLINE
| ID: mdl-16097688
ABSTRACT
A method for the direct determination of trace lead in chestnut by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) with slurry sampling was developed in the present paper. Ammonium ortho-phosphate was used as a matrix modifier. The effects of slurry preparation, particle size of sample, matrix modifier, ashing temperature, atomization temperature, and common coexisting components on the determination of lead were studied. Under the optimized operating conditions, the detection limit, the relative standard deviation (RSD), and the recoveries of standard addition for this method were 0.47 ng x mL(-1), 6.1% (n = 11) and 90%-106%, respectively.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Espectrofotometria Atômica
/
Fagaceae
/
Chumbo
/
Nozes
Idioma:
Zh
Revista:
Guang Pu Xue Yu Guang Pu Fen Xi
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
China