کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10561508 | 969775 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flow injection spectrophotometric method for chloride determination in natural waters using Hg(SCN)2 immobilized in epoxy resin
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
A flow injection (FI) spectrophotometric method was proposed for the determination of chloride ion in natural waters. The determination of chloride was carried out by reaction with Hg(SCN)2 immobilized in an epoxy resin bead in a solid-phase reactor (SPR) and the thiocyanate ions released were determined spectrophotometrically at 480 nm after complexing reaction with Fe(III). The analytical curve for chloride was linear in the concentration range from 5.6 à 10â5 to 2.2 à 10â4 mol lâ1 with a detection limit of 1.4 à 10â5 mol lâ1. The relative standard deviation (R.S.D.) was 2.2% for a solution containing 2.2 à 10â4 mol lâ1 (n = 10). The simple manifold allows a routine analytical frequency of 100 determinations per hour. The main advantage of the developed method is the 400% reduction of the Hg waste solution generated when compared to conventional methods for chloride determination based on the same spectrophotometric reaction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 65, Issue 4, 28 February 2005, Pages 965-970
Journal: Talanta - Volume 65, Issue 4, 28 February 2005, Pages 965-970
نویسندگان
Claudineia R. Silva, Heberth J. Vieira, Larissa S. Canaes, Joaquim A. Nóbrega, Orlando Fatibello-Filho,