کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
583199 | 877867 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gadolinium hydroxide coprecipitation system for the separation-preconcentration of some heavy metals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
A simple and new procedure for the determination of trace amounts of lead(II), cobalt(II), manganese(II) and copper(II) is described, that combines atomic absorption spectrometry-gadolinium hydroxide coprecipitation. One milliliter of 1% gadolinium(III) solution was added to each sample; the pH was then adjusted to 11 in order to collect trace heavy metals on gadolinium(III) hydroxide. The precipitate was separated by centrifugation and dissolved in 1 mL of 1 mol Lâ1 HNO3. The influences of analytical parameters including amount of gadolinium(III), sample volume, etc. were investigated on the recoveries of analyte ions. The effects of concomitant ions were also examined. The recoveries of the analyte ions were greater than 95. The detection limits for the analyte elements based on 3 sigma (n = 20) were in the range of 0.52-12.0 μg Lâ1. The method was applied to the determination of analytes in real samples and good results were obtained (relative standard deviations <10%, recoveries >95%).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 155, Issue 3, 15 July 2008, Pages 595-600
Journal: Journal of Hazardous Materials - Volume 155, Issue 3, 15 July 2008, Pages 595-600
نویسندگان
Mustafa Soylak, Hikmet Balgunes,