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SECOR INTERNATIONAL INCORPORATED <br /> www secor com <br /> S E C 0 R <br /> DATA MANIPULATION AND CALCULATIONS <br /> ' The concentration of KMn04 in the sample is determined from the UV-vis analysis Multiply the <br /> observed concentration by the dilution factor to get the sample concentration Subtract the <br /> ' solution concentration from the initial concentration (3 95 g/L or 3950 mg/L) and multiply the <br /> total volume used per sample (10 mL or 010 L according to the method above) times the <br /> difference Plot the loss of KMn04 mass versus time sampled to evaluate the rate of oxidant <br /> ' demand The oxidant demand is reported in grams of oxidant per kilogram per day <br /> Sample calculation (UNITS ARE IN BOLD) <br /> 0 152 * {([initial conc - mg/L] — [sample conc - mg/1-1) * (volume in VOA - L))/{(time - days) <br /> (dry soil mass - kg)) <br /> ' SOXD- MG 02/(KG SOIL.* DAY) <br /> The term 0 152 is the conversion factor to convert equivalents of potassium permanganate to <br /> ' equivalents of oxygen If chemical oxidation is required and the mass of permanganate <br /> required to treat a soil is desired, then the 0 152 factor can be left out and the results will be <br /> reported in milligrams of potassium permanganate per kilogram soil day <br /> 10 <br /> 1 7 <br />