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Application of Solid Phase Extraction on Multiwalled Carbon Nanotubes of Some Heavy Metal Ions to Analysis of Skin Whitening Cosmetics Using ICP-AES

Author

Listed:
  • Ayoub A. ALqadami

    (Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia)

  • Mohammad Abulhassan Abdalla

    (Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia)

  • Zeid A. ALOthman

    (Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia)

  • Kamal Omer

    (Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia)

Abstract

A novel and highly sensitive method for the determination of some heavy metals in skin whitening cosmetics creams using multiwalled carbon nanotubes MWCNTs as solid phase extraction sorbent for the preconcentration of these heavy metals prior to their determination by inductively coupled plasma atomic emission spectrometry is described. Different practical parameters have been thoroughly investigated and the optimum experimental conditions were employed. The developed method was then applied for the determination of arsenic, bismuth, cadmium, mercury, lead and titanium in samples of skin whitening cosmetics. The detection limits under these conditions for As, Bi, Cd, Pb, Hg and Ti were 2.4, 4.08, 0.3, 2.1, 1.8, and 1.8 ng·mL −1 , respectively. The relative standard deviations (RSDs) were found to be less than 2.0%. For validation, a certified reference material of NIST SRM 1570a spinach leaves was analyzed and the determined values were in good agreement with the certified values. The recoveries for spiked samples were found to be in the range of 89.6–104.4%.

Suggested Citation

  • Ayoub A. ALqadami & Mohammad Abulhassan Abdalla & Zeid A. ALOthman & Kamal Omer, 2013. "Application of Solid Phase Extraction on Multiwalled Carbon Nanotubes of Some Heavy Metal Ions to Analysis of Skin Whitening Cosmetics Using ICP-AES," IJERPH, MDPI, vol. 10(1), pages 1-14, January.
    • Handle: RePEc:gam:jijerp:v:10:y:2013:i:1:p:361-374:d:22777
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    References listed on IDEAS

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    1. Claudia P. Peregrino & Myriam V. Moreno & Silvia V. Miranda & Alma D. Rubio & Luz O. Leal, 2011. "Mercury Levels in Locally Manufactured Mexican Skin-Lightening Creams," IJERPH, MDPI, vol. 8(6), pages 1-8, June.
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