کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9748648 | 1493787 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of acidic and basic species by headspace gas chromatography
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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: Determination of acidic and basic species by headspace gas chromatography Determination of acidic and basic species by headspace gas chromatography](/preview/png/9748648.png)
چکیده انگلیسی
This paper reported a novel headspace gas chromatographic (GC) technique on quantification of acidic and basic species. It is based on an acid-base reaction between the measured species and bicarbonate in an aqueous solution, which generates carbon dioxide in a closed headspace sample vial. By operating at 60 °C, carbon dioxide is completely released to the headspace and thus can be measured by GC with a thermal conductivity detector. Bicarbonate concentrations of 0.030 and 0.0025 mol/L are recommended for general applications and very small species content, respectively. This method is able to accurately measure small sample sizes (down to few milligrams or microliters). The present method is simple, accurate, and automatic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1093, Issues 1â2, 4 November 2005, Pages 212-216
Journal: Journal of Chromatography A - Volume 1093, Issues 1â2, 4 November 2005, Pages 212-216
نویسندگان
X.S. Chai, R.W. Maurer, J.S. Hsieh, D. Zhang, S.F. Wang,