کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7610346 1493495 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ion-exchange chromatographic analysis of peroxynitric acid
ترجمه فارسی عنوان
تجزیه و تحلیل کروماتوگرافی یون مبدل اسید پراکسینیتریک
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Ion-exchange chromatographic analysis of peroxynitric acid (O2NOOH) was performed by combining an acidic eluate with an UV-vis detector and immersing the separation column in an ice-water bath. The decomposition behavior of peroxynitric acid in the solution was also studied using this system. The fraction for the peroxynitric acid peak was collected. Ion-exchange chromatographic analysis of this fraction, after standing at room temperature for 24 h, showed that the decomposition products were mainly nitrate ions with a very small amount of nitrous acid. The peroxynitric acid peak area correlated perfectly with the total amount of decomposition products. The ion-exchange chromatographic isolation allowed us to evaluate the molar extinction coefficient of peroxynitric acid precisely in a wider wavelength range than previous reports. The value decreases monotonically from 1729 ± 26 M−1 cm−1 at 200 nm to 12.0 ± 0.5 M−1 cm−1 at 290 nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1431, 29 January 2016, Pages 89-93
نویسندگان
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