کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9743669 | 1491197 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Immobilized salen (N,Nâ²-bis (salicylidene) ethylenediamine) as a complexing agent for on-line sorbent extraction/preconcentration and flow injection-flame atomic absorption spectrometry
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The microcolumn of salen I (N,Nâ²-bis (salicylidene) ethylenediamine) immobilized on surfactant-coated alumina has been used for on-line preconcentration of copper and lead with a flow injection-flame atomic absorption spectrometry (FI-AAS). Various parameters affecting the deposition/elution processes in the FI-AAS system was optimized. Deposition of analytes was affected at pH of â¼9, and injection of nitric acid (250 μl 2 mol lâ1) served to elute retained species to AAS. A good relative standard deviation of 4.5 and 3.8% at 30 μg lâ1(n = 7), high enrichment factors of 100 and 75, and detection limits of 0.3, 2.6 μg lâ1 (3S) for Cu(II) and Pb(II) were obtained, respectively. The method was applied to water samples, multivitamin tablet and standard reference alloys (C12E41 and C12X3500) and accuracy was assessed through recovery experiment and independent analysis by furnace AAS, or comparing the results with the accepted values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 539, Issues 1â2, 10 May 2005, Pages 69-75
Journal: Analytica Chimica Acta - Volume 539, Issues 1â2, 10 May 2005, Pages 69-75
نویسندگان
Shayessteh Dadfarnia, Ali Mohammed Haji Shabani, Fatema Tamaddon, Maryam Rezaei,