کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10560992 969759 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Clean analytical methodology for the determination of lead with Arsenazo III by cyclic flow-injection analysis
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Clean analytical methodology for the determination of lead with Arsenazo III by cyclic flow-injection analysis
چکیده انگلیسی
A clean analytical methodology, where the sample determined and the reagent used are both toxic, has been proposed. A cation exchange mini-column was incorporated after the flow-through cell for on-line regeneration of the main reagent and the accumulation of heavy metal ions. The method involves the spectrophotometric determination of lead with Arsenazo III, the accumulation of lead onto the cationic exchanger, and subsequent regeneration of the chromogenic reagent, which makes the system reversible and the reagents reusable. The developed method provides a satisfactory way to cut down on the toxic reagent consumption and the produced volume of waste, an important step towards the zero emissions research initiative concept. The excellent repeatability and reproducibility, and the simplicity of this method are well suited for continuous measurements. The method was successively applied to the assay of lead in high-octane gasoline.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 68, Issue 2, 15 December 2005, Pages 281-286
نویسندگان
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