کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1243762 1495787 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrasound-assisted dispersive liquid–liquid microextraction for the determination of synthetic musk fragrances in aqueous matrices by gas chromatography–mass spectrometry
ترجمه فارسی عنوان
میکرو اکستراکت مایع پراکنده مایع به وسیله اشعه ماوراء بنفش برای تعیین ماسک های مصنوعی در ماتریس های آبی با استفاده از اسپکترومتری جرمی کروماتوگرافی گاز
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• SMCs were determined in aqueous matrices by UA-DLLME–GC–MS.
• Experimental design was used to optimise the extraction process.
• Low LODs (<54 ng L−1), good recoveries (96%) and precision (RSD<10%) were obtained.
• Real water samples (tap, sea, river and wastewater) were successfully analysed.
• Galaxolide, tonalide and exaltolide were the most detected compounds.

A rapid and simple method for the simultaneous determination of twelve synthetic musks in water samples, using ultrasound-assisted dispersive liquid–liquid microextraction (UA-DLLME) coupled with gas chromatography–mass spectrometry (GC–MS) was successfully developed.The influence of seven factors (volume of the extraction solvent and disperser solvent, sample volume, extraction time, ionic strength, type of extraction and disperser solvent) affecting the UA-DLLME extraction efficiency was investigated using a screening design. The significant factors were selected and optimised employing a central composite design: 80 μL of chloroform, 880 μL of acetonitrile, 6 mL of sample volume, 3.5% (wt) of NaCl and 2 min of extraction time.Under the optimised conditions, this methodology was successfully validated for the analysis of 12 synthetic musk compounds in different aqueous samples (tap, sea and river water, effluent and influent wastewater). The proposed method showed enrichment factors between 101 and 115 depending on the analyte, limits of detection in the range of 0.004–54 ng L−1 and good repeatability (most relative standard deviation values below 10%). No significant matrix effects were found, since recoveries ranged between 71% and 118%. Finally, the method was satisfactorily applied to the analysis of five different aqueous samples. Results demonstrated the existence of a larger amount of synthetic musks in wastewaters than in other water samples (average concentrations of 2800 ng L−1 in influent and 850 ng L−1 in effluent). Galaxolide, tonalide and exaltolide were the compounds most detected.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 148, 1 February 2016, Pages 84–93
نویسندگان
, , , ,