Abstract
A simple and sensitive method has been developed for the determination of phosphate in the ng ml–1 concentration range. The method utilizes the quantitative extraction of the Molybdenum Blue species of phosphate by polyurethane foam (PUF) discs prior to a diffuse reflectance spectrometric (DRS) measurement of the colored foam. A preconcentration factor of 150 has been achieved for a 100 ml sample volume. The effect of the pH of the solution on the rate of color development of the phosphomolybdenum blue has been carefully examined. A calibration graph has been established based on the Kubelka–Munk function (F(R)695), which was found to favorably correlate with the phosphate concentration. The lower detection limit (3σ) was found to be 5 ng ml–1, with a working analytical range of 5–70 ng ml–1. At the same time, the chromaticity coordinates y (CIE 1931) and v′ of the CIELUV (1976) were found to show good correlation with the concentration of phosphate in water. On the other hand, the calculated color temperature has been found to excellently correlate with the phosphate concentration. The different experimental parameters were thoroughly investigated.
Similar content being viewed by others
References
M. Okurnura, L. Tong, K. Fujinaga, and Y. Seike, Fresenius J. Anal. Chem., 2001, 370, 104.
H. J. Heckmann, Anal. Chim. Acta, 2000, 410, 177.
R. S. Stauffer, Anal. Chem., 1983, 55, 1205.
J. Murphy and J. P. Riley, Anal. Chim. Acta, 1962, 27, 31.
T. R. Crompton, “The Analysis of Natural Waters, Complex Formation Preconcentration Techniques”, 1993, Oxford University Press, Oxford, 96.
K. Matsuhisa and K. Ohzki, Analyst, 1986, 111, 685.
T. Yoshimura, M. Ishii, and T. Tarutani, Anal. Chem., 1986, 58, 591.
T. Braun, Fresenius Z. Anal. Chem., 1989, 333, 785.
K. Rzeszutek and A. Chow, Talanta, 1998, 47, 697.
W. E. Rudzinski, J. Yin, S. H. Norman, and D. A. Glaska, Analyst, 1998, 123, 2071.
D. S. De Jesus, M. S. De Carvalho, A. C. S. Costa, and L. C. Ferreira, Talanta, 1998, 46, 1525.
Y. Toker, M. Eral, and U. Hicsonmez, Analyst, 1998, 123, 51.
S. M. Hasany, M. M. Sdeed, and M. Ahmed, Talanta, 2001, 54, 89.
M. N. Abbas and G. A. Mostafa, Anal. Chim. Acta, 2000, 410, 185.
M. P. Arena, M. D. Porter, and J. S. Fritz, Anal. Chem., 2002, 74, 185.
N. I. Ershova and V. M. Ivanov, Anal Chim. Acta, 2000, 408, 145.
N. I. Ershova and V. M. Ivanov, Fresenius J. Anal. Chem., 2001, 371, 556.
S. G. Dmitrienko, O. A. Sviridova, L. N. Pyatkova, L. A. Zhukova, and Y. A. Zolotov, Anal. Chim. Acta, 2000, 405, 231.
A. Berger-Schunn, “Practical Color Measurement: A Primer for the Beginner, A Reminder for the Expert”, 1998, John Wiley & Sons, New York.
G. Kortum, “Refelectance Spectroscopy Princibles, Methods, Applicationsa”, 1969, Springer Verlag, New York, 106.
R. M. Boynton, “Human Color Vision”, 1992, Optical Soc. of America.
N. I. Ershova and V. M. Ivanov, Anal. Chim. Acta, 1998, 364, 235.
G. Wyszecki and W. S. Stiles, “Color Science; Concepts and Methods, Quantitative Data and Formulae”, 2nd ed., 1982, John Wiley & Sons, New York.
A. S. Khan and A. Chow, Talanta, 1983, 30, 173.
A. S. Khan and A. Chow, Talanta, 1985, 32, 241.
A. S Khan and A. Chow, Talanta, 1984, 31, 304.
T. Braun, M. N. Abbas, A. Elek, and L. Bakos, J. Radioanal. Chem., 1981, 67, 359.
M. N. Abbas, A. Vertes, and T. Braun, Radiochem. Radioanal. Lett, 1982, 54, 17.
R. W. G. Hunt, “Measuring Color”, 2nd ed., 1991, Ellis Horwood, Chichester.
F. Bunting, “The Color Shop, Color Primer, An Introduction to the History of Color, Color Theory, and Color Measurement”, 1998, Light Source Computer Images Inc., USA.
A. R. Robertson, J. Opt. Soc. Am., 1968, 58, 1528.
J. Z. Zhang, C. J. Fischer, and P. B. Ortner, Talanta, 1999, 49, 293.
C. Matsubara, Y. Yamamoto, and K. Takamura, Analyst, 1987, 112, 1257.
F. Koroleff, K. Grasshoff, M. Ehrhardt, and K. Kremling, “Methods of Seawater Analysis”, 2nd ed., 1983, Verlag Chemie, Weinheim, Germany, 125.
J. Basset and R. C. Denney, G. H. Jeffery, and J. Mendham, “VogeVs Textbook of Quantitative Analysis, including Elementary Instrumental Analysis”, 4th ed., 1978, Longman, London, 374.
E. B. Sandell and H. Onishi, “Photometric Determination of Traces of Metals, General Aspects”, 1978, John Wiely & Sons, New York.
P. Linares, M. D. L. De Castro, and M. Valcarcel, Anal. Chem., 1986, 58, 120.
K. L. Linge and C. E. Oldham, Anal. Chim. Acta, 2001, 450, 247.
T. Tanaka, K. Hiiro, and A. Kawahara, Bunski Kagaku, 1979, 28, 43.
J. M. Bosque-Sendra, C. Merida, and L. F. Capitan-Vallvey, Analusis, 1990, 18, 531.
S. Motomizu, T. Wakimoto, and K. Tôei, Anal. Chim. Acta, 1982, 138, 329.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Abbas, M.N. Diffuse Reflectance Spectroscopic Determination of Phosphate with Applications of Chromaticity Coordinates and Color Temperature. ANAL. SCI. 19, 1303–1308 (2003). https://doi.org/10.2116/analsci.19.1303
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.2116/analsci.19.1303