کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10559900 | 969675 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sequential injection determination of orthophosphate as ion associate of 12-molybdophosphate with Astra Phloxine
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A simple and fast reaction between 12-molybdophosphate heteropoly anion and the polymethine dye Astra Phloxine was used for the development of a new SIA method for the determination of orthophosphate. The suggested method has higher sensitivity and a broader calibration range than existing SIA methods. It can be used to detect phosphate in the range from 0.2 to 10 μmol Lâ1 with a detection limit of 0.1 μmol Lâ1 and an acceptable throughput of 20 samples hâ1. The comparably low molybdate (5.6 mmol Lâ1) and dye (0.1 mmol Lâ1) concentrations led to an improvement in the stability of the base line. Inter-day reproducibility was better than 5%, while the intra-day RSD was in the range 0.8-3.5%. The method was used for the analysis of natural water samples and phosphorus-containing chemicals having a low content of orthophosphate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 84, Issue 5, 15 June 2011, Pages 1355-1360
Journal: Talanta - Volume 84, Issue 5, 15 June 2011, Pages 1355-1360
نویسندگان
Svitlana V. Khlyntseva, Andriy B. Vishnikin, Mohammed K.E.A. Al-Shwaiyat, Hana SklenáÅová, Petr Solich, Yaroslav R. Bazel, Vasil Andruch,