کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1204844 | 965170 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chloride determination by ion chromatography in petroleum coke after digestion by microwave-induced combustion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Microwave-induced combustion was applied to petroleum coke digestion in closed vessels for further chloride determination by ion chromatography. Samples were pressed as pellets and placed on a quartz holder. Combustion was performed using oxygen pressure of 2 MPa and 50 μl of 6 mol l−1 NH4NO3 as aid for ignition. Recoveries from 97 to 102% were obtained for all studied absorbing solutions (water, H2O2, Na2CO3 or (NH4)2CO3). Accuracy was evaluated using certified reference materials with agreement better than 98% using water as absorbing solution with reflux step. The limit of quantification was 3.8 μg g−1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1213, Issue 2, 12 December 2008, Pages 249–252
Journal: Journal of Chromatography A - Volume 1213, Issue 2, 12 December 2008, Pages 249–252
نویسندگان
Juliana S.F. Pereira, Liange O. Diehl, Fábio A. Duarte, Maria F.P. Santos, Regina C.L. Guimarães, Valderi L. Dressler, Érico M.M. Flores,