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Phosphate determination in sugarcane juices, water and detergent by spectrophotometric from Bhavnagar region

H.J.Jani, P.M.Chatrabhuji, Shriji Kurup, P.N.Bhatt

spectrophotometric method is developed for the determination of phosphate in sugar cane juice, water and detergent samples. The method is based on the formation of phosphomolybdate with added molybdate followed by its reduction with sodium sulphide in aqueous sulfuric acid medium. The systemobeys Lambert-BeerÂ’s law at 715 nm in the concentration range 0.3-12.24 ppm.Molar absorptivity, correlation coefficient and SandellÂ’s sensitivity valueswere found to be 6.1x103mol-1 cm,-1 0.999 and 0.0156mg cm-2 respectively. The results obtained were reproducible with acceptable standard deviation 3.7%and relative error 3.4%.