Sequential injection determination of orthophosphate as ion associate of 12-molybdophosphate with Astra Phloxine

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11160%2F11%3A10100197" target="_blank" >RIV/00216208:11160/11:10100197 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0039914011001998" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0039914011001998</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.talanta.2011.02.046" target="_blank" >10.1016/j.talanta.2011.02.046</a>

Result language
angličtina
Original language name
Sequential injection determination of orthophosphate as ion associate of 12-molybdophosphate with Astra Phloxine
Original language description
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 mu mol L(-1) with a detection limit of 0.1 mu mol L(-1) and an acceptable throughput of 20 samples h(-1). The comparably low molybdate (5.6 mmol L(-1)) and dye (0.1 mmol L(-1)) 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
FR - Pharmacology and apothecary chemistry
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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