1990
DOI: 10.1039/ja9900500293
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Identification of potential environmental sources of childhood lead poisoning by inductively coupled plasma mass spectrometry. Verification and case studies

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Cited by 70 publications
(21 citation statements)
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“…Aliquots of the 116 dried sections from the core were digested for several hours in hot mixed acid (0.3-0.5 g of sediment, 20 cm 3 of 8 M HNO 3 , 10 cm 3 of 11.6 M HCl, filtration, further 5-10 cm 3 aliquots of 11.6 M HCl until brown fumes of NO 2 driven off) prior to preparation (in 1 M HCl) for determination of lead by flame atomic absorption spectrometry (Unicam SP-9 800) and in hot nitric acid (0.1 g of sediment, 30 cm 3 of 8 M HNO 3 ) prior to preparation (in 2% v/v HNO 3 ) for analysis by inductively coupled plasma-mass spectrometry (VG Plasmaquad PQ1 or Plasmaquad PQ2) for 206 Pb/ 207 Pb (14). The mean 206 Pb/ 207 Pb ratio for the reference material IAEA SL-1, lake sediment, was 1.214 ( 0.006 (n ) 34), in agreement with the 1.214 ( 0.012 value of Viczian et al (19). The mean 206 Pb/ 207 Pb ratio for the reference material IAEA SL-1, lake sediment, was 1.214 ( 0.006 (n ) 34), in agreement with the 1.214 ( 0.012 value of Viczian et al (19).…”
Section: Methodssupporting
confidence: 83%
“…Aliquots of the 116 dried sections from the core were digested for several hours in hot mixed acid (0.3-0.5 g of sediment, 20 cm 3 of 8 M HNO 3 , 10 cm 3 of 11.6 M HCl, filtration, further 5-10 cm 3 aliquots of 11.6 M HCl until brown fumes of NO 2 driven off) prior to preparation (in 1 M HCl) for determination of lead by flame atomic absorption spectrometry (Unicam SP-9 800) and in hot nitric acid (0.1 g of sediment, 30 cm 3 of 8 M HNO 3 ) prior to preparation (in 2% v/v HNO 3 ) for analysis by inductively coupled plasma-mass spectrometry (VG Plasmaquad PQ1 or Plasmaquad PQ2) for 206 Pb/ 207 Pb (14). The mean 206 Pb/ 207 Pb ratio for the reference material IAEA SL-1, lake sediment, was 1.214 ( 0.006 (n ) 34), in agreement with the 1.214 ( 0.012 value of Viczian et al (19). The mean 206 Pb/ 207 Pb ratio for the reference material IAEA SL-1, lake sediment, was 1.214 ( 0.006 (n ) 34), in agreement with the 1.214 ( 0.012 value of Viczian et al (19).…”
Section: Methodssupporting
confidence: 83%
“…The spectrometer settings were optimized with a 10 mg L 01 solution containing 7 Li, 63 Cu, 114 Cd, and Bi for the instrument external calibration. The internal reference was simultaneously introduced with the blank, external standard, and sample solution streams by an on-line, merging-stream flow arrangement described previously (19). All samples were transported to the ICP-MS with a variable speed peristaltic pump (Rabbit, Rainin Instruments, Wolburn, MA).…”
Section: Instrumentationmentioning
confidence: 99%
“…São encontrados poucos trabalhos envolvendo a determinação de elementos em tintas [11][12][13][14][15][16][17][18][19] e a maioria diz respeito à determinação de Pb. [9][10][11][12][13][14] Em quase todos os trabalhos o estudo envolveu um único tipo de tinta.…”
Section: Introductionunclassified
“…[9][10][11][12][13][14] Em quase todos os trabalhos o estudo envolveu um único tipo de tinta. Os métodos de preparação da amostra geralmente envolveram decomposição parcial da tinta e posterior calcinação, ou decomposição da tinta com mistura de ácidos em forno de microondas.…”
Section: Introductionunclassified