Open AccessTrace Determination of Selected Heavy Metal Ions in Bleaching Creams in the Local Market of Saudi Arabia
Author(s) -
Faten M. Ali Zainy
Publication year - 2017
Publication title -
biosciences biotechnology research asia/biosciences biotechnology research asia
Language(s) - English
Resource type - Journals
eISSN - 2456-2602
pISSN - 0973-1245
DOI - 10.13005/bbra/2579
Subject(s) - chemistry , inductively coupled plasma atomic emission spectroscopy , detection limit , cosmetics , heavy metals , metal ions in aqueous solution , metal , contamination , microwave digestion , trace metal , inductively coupled plasma , environmental chemistry , chromatography , plasma , ecology , physics , organic chemistry , quantum mechanics , biology
Bleaching cream and cosmetics products of skin have risk of toxicity and deleterious effects to the human health because of their multiplicative contamination with heavy metals and uncertain mixing of different components. Thus, the present study reports a comprehensive study on the trace selected heavy metal (Hg, Cd, Ti, Bi, Pb, As and Tl) determination in 16 samples of bleaching creams and samples mixture of bleaching creams simultaneously to get a double activity (shiny and faster) on the skin from the local market of Saudi Arabia. Samples were digested with high pressure microwave technique followed by direct determination by inductive coupled plasma - optical emission spectrometer (ICP-OES). Hg, Bi, Ti and Pb levels on samples were found equal 5739.16, 7013.53, 21407.73, 456.70 µg/g, respectively whereas other elements (Cd, As and Tl) were found less than 28.99 ppm. One sample of the mixtures showed high concentrations of Hg (13338.50 µg/g,) and Bi (619.23 µg/g). Thus, creams and cream mixtures containing heavy metals above the permissible limit must be blind. The lower detection limits (LOD) were achieved at 2.5-50 µg/g concentration level, RSD was less than 14.72%, and recovery percentage for cosmetics were in the range of 88.52 -99.62%. The proposed method for sample digestion and ICP-OES measurements was fast, precise, convenient and provided good recovery of the tested elements.