Trace and Ultratrace Analysis of Purified Water Samples and Hydrogen Peroxide Solutions for Phosphorus by Flow-Injection Method

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Abstract

A highly sensitive fluorescence-quenching method for the determination of phosphorus based on the formation of an ion associate between molybdophosphate and Rhodamine B (RB) was developed. A simple flow-injection system coupled with a fluorescence detector was used to measure the fluorescence intensity at 560 nm and 580 nm as an excitation and an emission wavelength, respectively. The calibration graph for phosphorus showed a good linearity in the range of (0 - 1) × 10<sup>-7</sup> M (1 M = 1 mol L<sup>-1</sup>), and a detection limit of 1 × 10<sup>-9</sup> M (<i>S/N</i> = 3). The proposed method was successfully applied to the determination of ultratrace amounts of phosphorus in ultrapurified and purified water samples, and to the determination of trace amounts of phosphorus in commercially-available hydrogen peroxide solutions with satisfactory results.

Journal

  • Analytical Sciences

    Analytical Sciences 21(3), 263-268, 2005-03-10

    The Japan Society for Analytical Chemistry

References:  25

Codes

  • NII Article ID (NAID)
    10014462006
  • NII NACSIS-CAT ID (NCID)
    AA10500785
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    09106340
  • NDL Article ID
    7275038
  • NDL Source Classification
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL Call No.
    Z54-F482
  • Data Source
    CJP  NDL  IR  J-STAGE 
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