1997
DOI: 10.1016/s0003-2670(97)00076-7
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Hair analysis. Part 2. Differential pulse anodic stripping voltammetric determination of thallium in human hair samples of persons in permanent contact with lead in their workplace

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Cited by 28 publications
(14 citation statements)
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“…The nail samples were scrape and clean of dust particles with nonionic detergent (Triton X-100) following a standardized washing procedure [21] . This was followed by soaking the nail samples in acetone to remove external contamination, and finally the samples were rinse five times with deionized water, dried in an oven at 110 ℃and stored in a dessicator pending analysis.…”
Section: Washing Of Nail Samplesmentioning
confidence: 99%
“…The nail samples were scrape and clean of dust particles with nonionic detergent (Triton X-100) following a standardized washing procedure [21] . This was followed by soaking the nail samples in acetone to remove external contamination, and finally the samples were rinse five times with deionized water, dried in an oven at 110 ℃and stored in a dessicator pending analysis.…”
Section: Washing Of Nail Samplesmentioning
confidence: 99%
“…O contrário também pode ocorrer se não estiverem presentes em quantidades suficientes para o organismo. Elementos tais como Tl, As, Sb, Bi e Hg não são essenciais 26 , sendo sempre indesejáveis em qualquer concentração.…”
Section: Finalidadesunclassified
“…O cabelo é um material biológico atrativo por causa da simplicidade de amostragem (facilidade de coleta, sem traumas e sem dor), estocagem, transporte e manuseio. Além disso, é um material bastante estável que não precisa ser mantido sob refrigeração, tampouco necessita de preservantes 2,9,26,27 . Isto, por exemplo, facilita a avaliação de uma população inteira de determinado local que está sendo contaminada através da água ou poluentes industriais 8,11 .…”
Section: Vantagens Da Análise De Cabelounclassified
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“…However, these methods are laborious and are apt to carry a risk of contamination. A variety of methods have been proposed for the determination of thallium such as inductively coupled plasma (Miyazaki et al, 1992), inductively coupled plasma-mass spectroscopy (Takeda et al, 2001;Wolf et al, 2005), atomic absorption spectroscopy (Carpenter, 1981;Silva et al, 2004), X-ray fluorescence (Mihajlovic and Stafilov, 1998), electroanalytical methods (Ciszewski et al, 1997;Shams and Yekehtaz, 2002; ABSTRACT: Methylene blue has been proposed as a new analytical reagent for the catalytic spectrophotometric determination of thallium (I). It reacts with ascorbic acid in acidic medium to form a colorless product.…”
Section: Introductionmentioning
confidence: 99%