کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10560000 | 969700 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature-response polymer coating for in-tube solid-phase microextraction coupled to high-performance liquid chromatography
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
The silica nanoparticle (SiO2 NP)-deposited capillary fabricated by liquid phase deposition (LPD) was bonded by 3-(triethoxysilyl) propyl methacrylate and then modified with poly(N-isopropylacrylamide) (PNIPAAm) by polymerization. The resulting PNIPAAm modified SiO2 NP-deposited capillary was applied to in-tube solid-phase microextraction coupled to high-performance liquid chromatography (in-tube SPME-HPLC). To investigate the extraction performance of the prepared capillary, diethylstilbestrol (DES) with moderate polarity was selected as the model analyte. Results demonstrate that PNIPAAm modified SiO2 NP-deposited capillary exhibited obvious temperature responsive character. Finally, the PNIPAAm modified SiO2 NP-deposited capillary was applied to the analysis of three synthetical estrogens from milk samples. The detection limit of the method was found to be in the range 1.2-2.2Â ng/g, and recovery was 71.7-98.9% with relative standard deviations in the range of 2.8-12.6%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 84, Issue 4, 30 May 2011, Pages 1019-1025
Journal: Talanta - Volume 84, Issue 4, 30 May 2011, Pages 1019-1025
نویسندگان
Qiong-Wei Yu, Qiao Ma, Yu-Qi Feng,