کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1191721 | 963580 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An air-driving FI device with merging zones technique for the determination of formaldehyde in beers
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
An air-driving flow injection device with merging zones technique is proposed for the rapid determination of formaldehyde in pale beers based on its catalytic action on the redox reaction between Victoria Blue B and potassium bromate in phosphoric acid medium. The reaction is monitored spectrophotometrically by measuring the decrease in absorbance of Victoria Blue B at the maximum absorption wavelength of 618 nm. Only 160 μL reagents and 40 μL sample solutions are needed. Formaldehyde in the range 8-700 ng mLâ1 can be determined at a rate of about 50 samples hâ1, the RSD for the determination of 20 ng m Lâ1 formaldehyde is 2.1%. Due to appropriate consideration of the beer matrix, formaldehyde in beers can be determined directly and satisfactory results were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 102, Issue 1, 2007, Pages 90-94
Journal: Food Chemistry - Volume 102, Issue 1, 2007, Pages 90-94
نویسندگان
Xuan-Feng Yue, Yan-ni Zhang, Zhi-Qi Zhang,