A SIMPLE SPECTROPHOTOMETRIC METHOD FOR THE QUANTITATIVE ANALYSIS OF PHOSPHATE IN THE WATER SAMPLES

Authors

  • Nur Habibah Poltekkes Kemenkes Denpasar
  • I Gusti Ayu Shri Dhyanaputri Poltekkes Kemenkes Denpasar
  • I Wayan Karta Poltekkes Kemenkes Denpasar
  • Cokorda Dewi Widhya Hana Sundari Poltekkes Kemenkes Denpasar
  • Mochammad Choirul Hadi Poltekkes Kemenkes Denpasar

DOI:

https://doi.org/10.23887/jstundiksha.v7i2.13940

Keywords:

Phosphate, Phophate analysis, spectrophotometric method, molybdenum blue complex

Abstract

A simple spectrophotometric method was used to determine the phosphate content in the water sampels. The method is based on the formation of molybdenum blue complex from the reaction of orthophosphate and ammonium molybdate followed by reduction with ascorbic acid in the aqueous sulfuric acid medium. The color intensity of the molybdenum blue complex is proportionally to the phosphate content in the solution. The system obeys Lamber-Beer’s Law at the 890 nm in the concentration range of 0.1-1 mg P/L and the linier calibration graph was obtained with the slope, 0.6334, intercept, 0.0074 and correlation coefficient of 0.9988. This official method was also used for the quantitative analysis of phosphate in the water samples and the satisfactory result was obtained. The range of phosphate concentration in the water samples are 0.033 – 2.943 mg P/L.

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Published

2018-12-24

How to Cite

Habibah, N., Dhyanaputri, I. G. A. S., Karta, I. W., Sundari, C. D. W. H., & Hadi, M. C. (2018). A SIMPLE SPECTROPHOTOMETRIC METHOD FOR THE QUANTITATIVE ANALYSIS OF PHOSPHATE IN THE WATER SAMPLES. JST (Jurnal Sains Dan Teknologi), 7(2), 198–204. https://doi.org/10.23887/jstundiksha.v7i2.13940

Issue

Vol. 7 No. 2 (2018)

Section

Articles

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