1984
DOI: 10.1039/an9840901461
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Elimination of metal interferences in the hydride generation atomic-absorption spectrometry of arsenic using sodium tetrahydroborate(III) solution

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Cited by 25 publications
(9 citation statements)
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“…When L-cystine was added to the samples to a final concentration of 3%, the acceptable transition-metal concentrations were increased by a factor of approximately 10. This is better than methods employing batch generation (9,10) or conventional continuous flow methods (17,22), but not as good as the chloride generation method previously reported by us (23).…”
Section: Resultscontrasting
confidence: 54%
See 1 more Smart Citation
“…When L-cystine was added to the samples to a final concentration of 3%, the acceptable transition-metal concentrations were increased by a factor of approximately 10. This is better than methods employing batch generation (9,10) or conventional continuous flow methods (17,22), but not as good as the chloride generation method previously reported by us (23).…”
Section: Resultscontrasting
confidence: 54%
“…Reagent Optimization. Recent investigations in hydride generation chemistry carried out by a number of workers (9,10,17,22) have been our guidelines in optimizing this system.…”
Section: Resultsmentioning
confidence: 99%
“…The combination of masking and reducing agents was also recommended by Brown et ~1. 21 The recoveries of 5 ng ml-1 of Pb in the presence of various concentrations of Cu with NaCN as a masking agent are summarised in Table 9. In the absence of cyanide there was almost no detectable lead signal.…”
Section: Elimination Of Interferencesmentioning
confidence: 99%
“…Um dos mais simples faz uso do aumento da acidez da solução e/ou do controle da concentração do reagente redutor 142,[144][145][146][147][148][149] . Welz e Schubert-Jacobs 145 , por exemplo, observaram que, elevando a concentração do HCl de 0,5 para 5 mol/L, podem ser toleradas maiores razões interferente/analito na determinação de As e Se, na presença de Ni, Co e Cu, e que a diminuição da concentração do redutor de 3 para 0,5% m/v também permite maiores razões interferente/analito, com exceção para interferência do Cu no sinal do Se, onde o efeito é menos pronunciado em concentrações maiores do redutor.…”
Section: Controle E Eliminação De Interferênciasunclassified