zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-287Research ArticleСтатьиМЕТОД ОПРЕДЕЛЕНИЯ СВИНЦА И КАДМИЯ В ПРОДУКТАХ КОСМЕТОЛОГИИ С ПОМОЩЬЮ АТОМНО-ЭМИССИОННОЙ СПЕКТРОМЕТРИИ С ИНДУКТИВНО СВЯЗАННОЙ ПЛАЗМОЙA FACILE ACIDIC DIGESTION METHOD FOR COSMETIC LEAD AND CADMIUM DETERMINATION BY AN INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETERTanX. .TanX. .tanxijuan@hotmail.com; tanxijuan@chd.edu.cnWangZ. -M.WangZ. -M.noemail@neicon.ruWangZ. -L.WangZ. -L.noemail@neicon.ruУниверситет Чаньань, Колледж наук о Земле и природных ресурсахCollege of Earth Sciences and Land Resources, Chang’an UniversityMotic (Xiamen) Electric Group Co. LtdMotic (Xiamen) Electric Group Co. Ltd201810032020854606611Copyright © Tan X..., Wang Z.-., Wang Z.-., 20202020Tan X..., Wang Z.-., Wang Z.-.Tan X..., Wang Z.-., Wang Z.-.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/287

Предложен метод определения свинца (Pb) и кадмия (Cd) с помощью атомно-эмиссионного спектрометра с индуктивно связанной плазмой (ICP-AES) в косметических средствах, основанный на изучении процесса усвоения кислоты. Использованы концентрированные кислоты HNO3, HNO3-HClO4 и акварегий. Результаты показывают, что для подготовки косметических препаратов наиболее подходит HNO3. Метод протестирован при определении Pb и Cd и оптимизирован с точки зрения точности, повторяемости и воспроизводимости. Для косметических образцов предел обнаружения Pb и Cd 0.07 и 0.001 мкг/г. Метод успешно применен к анализу различных косметических средств для лица, показывающих содержание Pb и Cd 0.31-0.54 и 0.01-0.24 мг/кг. Воспроизводимость результатов 89.7-104.4 % и относительное стандартное отклонение <3.0 % (n = 5) свидетельствуют о хорошей применимости предлагаемого метода для количественной оценки Pb и Cd в косметических образцах.

A method for determining lead (Pb) and cadmium (Cd) in cosmetic products by an inductively coupled plasma atomic emission spectrometer (ICP-AES) is described. The acid digestion approach using concentrated HNO3, HNO3-HClO4, and aqua regia is performed, and the results show that the digestion of HNO3 is the most suitable procedure for cosmetics. The proposed method is then validated and optimized for Pb and Cd determination in terms of accuracy, repeatability, and day-to-day reproducibility. For diluted cosmetic samples, the limits of detection for Pb and Cd are 0.07 and 0.001 µg/g, respectively. This developed method is then successfully applied to the analysis of different facial cosmetic products, showing the contents of Pb and Cd within the ranges ~0.31-0.54 and ~0.01-0.24 mg/kg, respectively. The determination recoveries for Pb and Cd are within 89.7-104.4%, and the relative standard deviations are less than 3.0% (n = 5), showing the good applicability of this proposed method for Pb and Cd quantification in cosmetic samples.

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The authors declare that there are no conflicts of interest present.