کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1252968 971057 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simple, Selective, and Sensitive Spectrophotometric Method for Determination of Trace Amounts of Nickel(II), Copper (II), Cobalt (II), and Iron (III) with a Novel Reagent 2-Pyridine Carboxaldehyde Isonicotinyl Hydrazone
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Simple, Selective, and Sensitive Spectrophotometric Method for Determination of Trace Amounts of Nickel(II), Copper (II), Cobalt (II), and Iron (III) with a Novel Reagent 2-Pyridine Carboxaldehyde Isonicotinyl Hydrazone
چکیده انگلیسی
A selective and sensitive reagent of 2-pyridine carboxaldehyde isonicotinyl hydrazone(2-PYAINH) was synthesized and studied for the spectrophotometric determination of nickel, copper, cobalt, and iron in detail. At a pH value of 7.0, 9.0, 9.0, and 8.0, respectively, which greatly increased the selectivity; nickel, copper, cobalt, and iron reacted with 2-PYAINH to form a 1:2 yellow-orange, 1:2 yellow-green, 1:2 yellow and 1:1 yellow complexes, with absorption peaks at 363, 352, 346, and 359 nm, respectively. Under the optimal conditions, Beer's law was obeyed over the ranges of 0.01-1.4, 0.01-1.5, 0.01-2.7, and 0.01-5.4 mg/L, respectively. The apparent molar absorptivity and Sandell's sensitivities were 8.4x104, 5.2x104, 7.1x104, and 3.9x104 L·mol−1°Cm−1, respectively, and 0.00069, 0.0012, 0.00078, and 0.0014 μg°Cm−2, respectively. The detection limits were found to be 0.001, 0.002, 0.003, and 0.01 mg/L, respectively. The detailed study of various interfering ions to make the method more sensitive was carried out and selective and several real samples were analyzed with satisfactory results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Research in Chinese Universities - Volume 24, Issue 2, March 2008, Pages 143-147
نویسندگان
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