کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2507231 1402936 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rapid determination of trace level copper in tea infusion samples by solid contact ion selective electrode
ترجمه فارسی عنوان
تعیین سریع سطح مسی در نمونه های تزریق چای توسط الکترودهای انتخابی یونی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
چکیده انگلیسی

A new solid contact copper selective electrode with a poly (vinyl chloride) (PVC) membrane consisting of o-xylylenebis(N,N-diisobutyldithiocarbamate) as ionophore has been prepared. The main novelties of constructed ion selective electrode concept are the enhanced robustness, cheapness, and fastness due to the use of solid contacts. The electrode exhibits a rapid (< 10 seconds) and near-Nernstian response to Cu2+ activity from 10−1 to 10−6 mol/L at the pH range of 4.0–6.0. No serious interference from common ions was found. The electrode characterizes by high potential stability, reproducibility, and full repeatability. The electrode was used as an indicator electrode in potentiometric titration of Cu(II) ions with EDTA and for the direct assay of tea infusion samples by means of the calibration graph technique. The results compared favorably with those obtained by the atomic absorption spectroscopy (AAS).

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food and Drug Analysis - Volume 24, Issue 3, July 2016, Pages 485–492
نویسندگان
, , , , ,