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W6 – DETERMINATION OF NITRATE IN WATER BY …
W6 DETERMINATION OF NITRATE IN WATER BY UV- visible . spectrometry , ION chromatography . Introduction NITRATE and nitrite ions are important indicators of pollution by organic materials as nitrogen from decomposing organic substances often ends up as NITRATE or nitrite ions. The DETERMINATION of NITRATE is often difficult because of the low levels found , and the distinct possibility of interfering materials being present. When determining NITRATE it is important to choose a method which suits both the interferences which are present and the level of analyte in the solution. The UV- visible method of determining NITRATE is a useful method for screening of a solution to make a rough DETERMINATION of the level of NITRATE . It determines the absorption f the NITRATE ion at 220nm. Good results are obtained if the WATER contains little or no organic matter (which also absorbs at 220nm).
W6 – DETERMINATION OF NITRATE IN WATER BY UV-VISIBLE SPECTROMETRY, ION CHROMATOGRAPHY 6.1 Introduction Nitrate and nitrite ions are important indicators of pollution by organic materials as
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