کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7643225 | 1494880 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemometric optimization of hollow fiber-liquid phase microextraction for preconcentration of trace elements in diesel and gasoline prior to their ICP-OES determination
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Chemometric optimization of hollow fiber-liquid phase microextraction for preconcentration of trace elements in diesel and gasoline prior to their ICP-OES determination Chemometric optimization of hollow fiber-liquid phase microextraction for preconcentration of trace elements in diesel and gasoline prior to their ICP-OES determination](/preview/png/7643225.png)
چکیده انگلیسی
A hollow fiber-liquid phase microextraction (HF-LPME) method for the simultaneous extraction and preconcentration of Ag, Al, As, Mn and Ti as ammonium pyrrolidine dithiocarbamate (APDC) complexes in [C6MIM][PF6] ionic liquid are reported. Multivariate techniques such as 24 factorial and Box-Behnken designs were used for the optimization of experimental parameters. Under optimized conditions, the limits of detection and quantification ranged from 0.04 to 0.09 and 0.15-0.29 μg Lâ 1, respectively. The preconcentration factors of 150, 291, 112, 405, 367 for Ag, Al, As, Mn and Ti, respectively, were achieved. The precision of the HF-LPME method estimated as the relative standard deviation (RSD) for five replicate determinations of metal ions at a concentration of 10 μg Lâ 1 was less than 5%. The HF-LPME method was verified by analysis of the target analytes in commercial diesel and gasoline samples. The accuracy of the proposed method was confirmed by performing standard addition method (spike recovery experiments, that is, spiking the samples with known amount of the standard). The recovery values (96-101%) indicated a satisfactory accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 114, May 2014, Pages 141-147
Journal: Microchemical Journal - Volume 114, May 2014, Pages 141-147
نویسندگان
Philiswa N. Nomngongo, J. Catherine Ngila, Titus A.M. Msagati, Brenda Moodley,