Abstract

Water quality assessment has become a challenge for the scientific community. Nitrate is one of important parameters, which contributes in quality assessment. In this paper, UV spectroscopic technique is employed for quantitative determination of nitrate in water at its characteristic wavelength ∼ 200nm, using spiked samples with known nitrate concentration in deionised water. The detection range for nitrate using this technique is 0.2ppm - 4ppm. Since nitrate detection is hindered by the presence of interferents viz. dissolved organic matter, nitrite, hexavalent chromium and surfactant, herein, we discuss the effect of non-ionic surfactant, TritonX 100, on determination of nitrate in water. The range of non-ionic surfactant (TritonX 100) is taken from 1 ppm-20ppm whereas cationic and anionic surfactant is not taken into consideration because of their null effect on nitrate determination in water.

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