2015
DOI: 10.1039/c5ay00315f
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Proficiency testing for determination of lead and arsenic in cosmetics: comparison of analytical procedures and evaluation of laboratory performances

Abstract: Proficiency testing scheme (CNAS T0419) involving 217 laboratories in China using their regular analytical methods for the determination of lead and arsenic in foundation cream cosmetics.

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Cited by 9 publications
(5 citation statements)
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“…The quantity of heavy metals extracted from a sample depends entirely upon the sample preparation procedure and experimental conditions used [8] . Several digestion methods such as dry ash, wet acid, and microwave acid digestion are used in the decomposition of a sample.…”
Section: Methods Selectionmentioning
confidence: 99%
“…The quantity of heavy metals extracted from a sample depends entirely upon the sample preparation procedure and experimental conditions used [8] . Several digestion methods such as dry ash, wet acid, and microwave acid digestion are used in the decomposition of a sample.…”
Section: Methods Selectionmentioning
confidence: 99%
“…Key feature in analytical proficiency testing [5] Comparative studies of Shewhart, Thompson, Howarth and Youden representations: advantages and disadvantages [21] Implementation of two new graphical methods recommended by the ISO standard, Mandel's h statistic and the Youden plot, to evaluate the consistency between laboratories and within laboratories for radon and thoron exposures [22] A proficiency testing scheme (CNAS T0419) is described involving 217 laboratories in China as participants using their regular analytical methods for the determination of lead and arsenic in foundation cream cosmetics [20] An optimized Youden chart was developed and compared with the traditional and trimmed traditional…”
Section: Content Referencementioning
confidence: 99%
“…Youden two-sample diagram, two-sample collaborative testing, two-sample plan, Youden plot or Youden analysis is particularly aimed at interlaboratory comparisons [19,20]. The raw results provided by the participating laboratories are treated by a statistical method applied by the organizing centre of the trial.…”
Section: Introductionmentioning
confidence: 99%
“…There are currently several concerns about cosmetic samples with respect to chemical contamination with toxic elements, and multiple studies have been published showing the development of new analytical methods for Cr (IV) 28 and Pb 29 determination, proficiency tests 30 and showing the importance of establishing safety levels of contaminants in cosmetics [31][32][33][34] .…”
Section: Introductionmentioning
confidence: 99%
“…There are currently several concerns about cosmetic samples with respect to chemical contamination with toxic elements, and multiple studies have been published showing the development of new analytical methods for Cr(IV) 28 and Pb 29 determination, and prociency tests 30 and showing the importance of establishing safety levels of contaminants in cosmetics. [31][32][33][34] Cosmetics present a diverse and complex matrix, and several studies have been reported describing contaminant detection, such as the study published by Chen et al 35 The authors proposed a method for Ge, As, Cd, Sb, Hg and Bi determination in lotions using slurry sampling in combination with chemical vapor generation and inductively coupled plasma mass spectrometry (ICP-MS).…”
Section: Introductionmentioning
confidence: 99%