کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1200347 | 1493481 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Automated multisyringe stir bar sorptive extraction using robust montmorillonite/epoxy-coated stir bars
ترجمه فارسی عنوان
چند منظوره ی چند منظوره استخراج با استفاده از مونت موریلونیت / اپوکسی پوشش داده می شود
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کلمات کلیدی
مونتموریلونیت، رزین اپوکسی، مخلوط کردن بار جذبی تجزیه و تحلیل تزریق جریان چند تسمه، کروماتوگرافی مایع با کارایی بالا، کلروفنل ها،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Herein we present a simple, rapid and low cost strategy for the preparation of robust stir bar coatings based on the combination of montmorillonite with epoxy resin. The composite stir bar was implemented in a novel automated multisyringe stir bar sorptive extraction system (MS-SBSE), and applied to the extraction of four chlorophenols (4-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol and pentachlorophenol) as model compounds, followed by high performance liquid chromatography-diode array detection. The different experimental parameters of the MS-SBSE, such as sample volume, selection of the desorption solvent, desorption volume, desorption time, sample solution pH, salt effect and extraction time were studied. Under the optimum conditions, the detection limits were between 0.02 and 0.34 μg Lâ1. Relative standard deviations (RSD) of the method for the analytes at 10 μg Lâ1 concentration level ranged from 3.5% to 4.1% (as intra-day RSD) and from 3.9% to 4.3% (as inter-day RSD at 50 μg Lâ1 concentration level). Batch-to-batch reproducibility for three different stir bars was 4.6-5.1%. The enrichment factors were between 30 and 49. In order to investigate the capability of the developed technique for real sample analysis, well water, wastewater and leachates from a solid waste treatment plant were satisfactorily analyzed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1445, 6 May 2016, Pages 10-18
Journal: Journal of Chromatography A - Volume 1445, 6 May 2016, Pages 10-18
نویسندگان
Milad Ghani, Mohammad Saraji, Fernando Maya, VÃctor Cerdà ,