کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7607599 1493362 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic carbon nanotube composite for the preconcentration of parabens from water and urine samples using dispersive solid phase extraction
ترجمه فارسی عنوان
کامپوزیت نانولوله کربنی مغناطیسی برای پیشکنترل پارابن ها از نمونه های آب و ادرار با استفاده از استخراج فاز جامد اسپری
کلمات کلیدی
پارابنز، اب، ادرار استخراج فاز جامد مغناطیسی، طیف سنجی جرم کروماتوگرافی گاز،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
This study describes the use of a magnetic multi-walled carbon nanotube composite for the preconcentration of nine parabens (methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, phenyl and benzylparaben) from water and urine samples after in situ acetylation. The enriched extracts were obtained by dispersive magnetic solid phase extraction (DMSPE) and analysed by gas chromatography with mass spectrometry (GC-MS). Several parameters affecting the adsorption (extraction time, magnetic material mass and ionic strength) and desorption (desorption solvent nature and volume, and desorption time) DMSPE steps were investigated. Matrix-matched calibration was recommended for quantification of the samples. Linearities in the 0.5-150 ng mL−1 range were obtained, depending on the compound. Under the optimal experimental conditions, the limits of detection ranged between 0.03 and 2.0 ng mL-1, depending on the sample matrix and the paraben congener. None of the samples analysed contained the above mentioned parabens. The method was validated with two water samples (harbour and wastewater treatment plant) and two urine samples spiked at two concentration levels. Recoveries in the 81-119% range were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1564, 24 August 2018, Pages 102-109
نویسندگان
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