کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1244476 | 969688 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ion-exclusion chromatography with the direct UV detection of non-absorbing inorganic cations using an anion-exchange conversion column in the iodide-form
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An ion-exclusion chromatographic method for the direct UV detection of non-absorbing inorganic cations such as sodium (Na+), ammonium (NH4+) and hydrazine (N2H5+) ions was developed by connecting an anion-exchange column in the Iâ-form after the separation column. For example, NH4+ is converted to a UV-absorbing molecule, NH4I, by the anion-exchange column in the Iâ-form after the ion-exclusion separation on anion-exchange column in the OHâ-form with water eluent. As a result, the direct UV detection of Na+, NH4+ and N2H5+ could be successfully obtained as well as the well-resolved separation. The calibration graphs of the analyte cations detected with UV at 230 nm were linear in the range of 0.001-5.0 mM. The detection limits at S/N = 3 of the cations were below 0.1 μM. This method was applied to real water analysis, the determination of NH4+ in river and rain waters, or that of N2H5+ in boiler water, with the satisfactory results. This could be applied also to low- or non-absorbing anions such as fluoride or hydrogencarbonate ions by the combination of a weakly acidic cation-exchange resin in the H+-form as the separation column and the anion-exchange conversion column.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 70, Issue 1, 15 August 2006, Pages 174-177
Journal: Talanta - Volume 70, Issue 1, 15 August 2006, Pages 174-177
نویسندگان
Masanobu Mori, Hideyuki Itabashi, Mikaru Ikedo, Kazuhiko Tanaka,