کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10559046 | 969209 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On-line preconcentration and determination of chromium in parenteral solutions by inductively coupled plasma optical emission spectrometry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: On-line preconcentration and determination of chromium in parenteral solutions by inductively coupled plasma optical emission spectrometry On-line preconcentration and determination of chromium in parenteral solutions by inductively coupled plasma optical emission spectrometry](/preview/png/10559046.png)
چکیده انگلیسی
A method for the preconcentration and speciation of chromium was developed. On-line preconcentration and determination were obtained using inductively coupled plasma optical emission spectrometry (ICP-OES) coupled with flow injection. To determinate the chromium (III) present in parenteral solutions, chromium was retained on activated carbon at pH 5.0. On the other hand, a step of reduction was necessary in order to determine total chromium content. The Cr(VI) concentration was then determined by difference between the total chromium concentration and that of Cr(III). A sensitivity enrichment factor of 70-fold was obtained with respect to the chromium determination by ICP-OES without preconcentration. The detection limit for the preconcentration of 25 ml of sample was 29 ng lâ1. The precision for the 10 replicate determinations at the 5 μg lâ1 Cr level was 2.3% relative standard deviation, calculated with the peak heights. The calibration graph using the preconcentration method for chromium species was linear with a correlation coefficient of 0.9995 at levels near the detection limits up to at least 60 μg lâ1. The method can be applied to the determination and speciation of chromium in parenteral solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 60, Issue 4, 30 April 2005, Pages 531-535
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 60, Issue 4, 30 April 2005, Pages 531-535
نویسندگان
R.A. Gil, S. Cerutti, J.A. Gásquez, R.A. Olsina, L.D. Martinez,