title

تعیین سرب در رژ لب و رنگ های مو با استفاده از استخراج مایع - مایع با کمک میکرو ویو و اسپکترسکوپی جذب اتمی با کوره گرافیتی

شرفی, کیومرث and فتاحی, نظیر and پیرصاحب, مقداد and یارمحمدی, حمید and فضل زاده دویل, مهدی (1394) تعیین سرب در رژ لب و رنگ های مو با استفاده از استخراج مایع - مایع با کمک میکرو ویو و اسپکترسکوپی جذب اتمی با کوره گرافیتی. International Journal of Cosmetic Science ــ 37 (5). pp. 489-495. شاپا 2494-1468

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Title

Trace determination of lead in lipsticks and hair dyes using microwave-assisted dispersive liquid–liquid microextraction and graphite furnace atomic absorption spectrometry

English Abstract

OBJECTIVE: A novel microwave-assisted dispersive liquid–liquid microextraction (MADLLME) technique according to the solidification of a floating organic droplet (SFO) and graphite furnace atomic absorption spectrometry (GFAAS) used for the extraction and determination of lead ions in lipsticks and hair dyes made in different countries. Lipstick and hair dye samples of different brands and colours were collected from local market in Kermanshah, Iran. METHODS: After sample treatment with microwave-assisted acid digestion, an appropriate mixture of acetone, 1-undecanol and diethyl dithiophosphoric acid was injected rapidly into the aqueous sample containing lead ions, and as a result, cloudy mixture was formed. After centrifugation, the test tube was cooled for few minutes. The solidified 1-undecanol on top of the solution was transferred into a suitable vial and injected into the analytical instrument. RESULTS: Under the optimum experimental conditions (extraction solvent: 30 lL of 1-undecanol; disperser solvent: 500 lL of acetone; ligand concentration: 0.15% (v/v); pH: ~1.5 and without salt added), the enhancement factor of 96 was obtained. The calibration graphs were linear in the range of 0.3–50 lg kg_1 with a correlation coefficient (r2) more than 0.995. The detection limit was 0.1 lg kg _1. Consequently, the developed method was successfully applied to extract and determine lead ions in the lipsticks and hair dyes, and favourable results were obtained. The proposed method which applied in cosmetics showed excellent relative recoveries (90–109.7%) with relative standard deviations <8.3% (n = 3) for all samples. CONCLUSION: The study revealed that the concentration of lead found in lipsticks and hair dyes on the Kermanshah market is far below the recommended limits as applied in Germany (20 mg kg _1) and Canada (10 mg kg _1) and confirmed that very low levels of lead are technically available in the final cosmetic products.

Item Type:Article
زبان سند : انگلیسی
نویسنده اول :کیومرث شرفی
نویسنده :نظیر فتاحی
نویسنده :مقداد پیرصاحب
نویسنده :حمید یارمحمدی
نویسنده :مهدی فضل زاده دویل
Additional Information:Impact Factor(2014): 1.377 Indexed in: ISI, Pubmed, index medicus, Medline, scopus, Embase, ProQuest, EBSCO,Chemical Abstracts Service, Biological Abstracts
کلیدواژه ها (انگلیسی):chemical analysis, cosmetics, dispersive liquid–liquid microextraction, lead, microwave-assisted digestion, spectroscopy
Subjects:WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
Divisions:Faculty of Health > Department of Environmental health
ID Code:6964
Deposited By: Engineerin Mahdi Fazlzadeh
Deposited On:16 Jul 1394 06:06
Last Modified:26 Jan 1397 11:01

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