A bimodal optoelectronic flow-through detector for phosphate determination

被引:17
作者
Fiedoruk, Marta [1 ]
Mieczkowska, Elzbieta [1 ]
Koncki, Robert [1 ]
Tymecki, Lukasz [1 ]
机构
[1] Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland
关键词
Phosphate; Photometry; Fluorimetry; Flow analysis; Optoelectronic detector; LIGHT-EMITTING-DIODES; ULTRATRACE ANALYSIS; INJECTION-ANALYSIS; ANALYSIS SYSTEM; PHOSPHORUS; DEVICE; SENSOR; FLUORESCENCE; ABSORBENCY; PHOTOMETRY;
D O I
10.1016/j.talanta.2014.04.086
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A miniature flow-through detector useful for bimodal, photometric and fluorimetric, determination of phosphates has been developed. This optoelectronic device made of four light emitting diodes (LEDs) integrated in the form of 85 mu L optical cell is easily applied in flow analysis manifolds. These LEDs play the roles of light source for photometric measurements, fluorescence inductors and detector of absorbance and fluorescence. For photometric mode of determinations a phosphomolybdenum blue method has been applied. The fluorimetric method of phosphate determination is based on quenching of rhodamine fluorescence by the heteropolyacid. The developed detector used in a simple three-channel flow injection analysis (FIA) system allows photometric or fluorimetric determination of phosphate in the wide range of concentration. The detection limits found for photometric and fluorimetric modes of FIA measurements are 5.5 mg L-1 and 10.4 mu g L-1, respectively. The potential utility of the flow-through detector for the needs of food and clinical analysis has been demonstrated. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:211 / 214
页数:4
相关论文
共 39 条
  • [11] Application of direct-injection detector integrated with the multi-pumping flow system to photometric stop-flow determination of total iron
    Koronkiewicz, Stanislawa
    Kalinowski, Slawomir
    [J]. TALANTA, 2012, 96 : 68 - 74
  • [12] Fluorescence detection for phosphate monitoring using reverse injection analysis
    Kroeckel, Lars
    Lehmann, Hartmut
    Wieduwilt, Torsten
    Schmidt, Markus A.
    [J]. TALANTA, 2014, 125 : 107 - 113
  • [13] Multicolour LED in luminescence sensing application
    Lange, V.
    Lima, F.
    Kuehlke, D.
    [J]. SENSORS AND ACTUATORS A-PHYSICAL, 2011, 169 (01) : 43 - 48
  • [14] A low-cost optical sensing device based on paired emitter-detector light emitting diodes
    Lau, KT
    Baldwin, S
    O'Toole, M
    Shepherd, R
    Yerazunis, WJ
    Izuo, S
    Ueyama, S
    Diamond, D
    [J]. ANALYTICA CHIMICA ACTA, 2006, 557 (1-2) : 111 - 116
  • [15] Trace and ultratrace analysis of purified water samples and hydrogen peroxide solutions for phosphorus by flow-injection method
    Li, ZH
    Oshima, M
    Sabarudin, A
    Motomizu, S
    [J]. ANALYTICAL SCIENCES, 2005, 21 (03) : 263 - 268
  • [16] Application of the PEDD flow detector for analysis of natural dissolved organic substances in coloured water
    Libecki, B.
    Kalinowski, S.
    [J]. WATER SCIENCE AND TECHNOLOGY, 2013, 68 (01) : 29 - 35
  • [17] INEXPENSIVE PHOTOMETER USING LIGHT-EMITTING DIODES
    LINDSAY, RH
    PATON, BE
    [J]. AMERICAN JOURNAL OF PHYSICS, 1976, 44 (02) : 188 - 189
  • [18] Hemoglobin determination with paired emitter detector diode
    Mieczkowska, Elzbieta
    Koncki, Robert
    Tymecki, Lukasz
    [J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2011, 399 (09) : 3293 - 3297
  • [19] Multi-commutation in spectrometry
    Morales-Rubio, Angel
    dos Reis, Boaventura Freire
    de la Guardia, Miguel
    [J]. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 2009, 28 (07) : 903 - 913
  • [20] Trace and ultratrace analysis methods for the determination of phosphorus by flow-injection techniques
    Motomizu, S
    Li, ZH
    [J]. TALANTA, 2005, 66 (02) : 332 - 340