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• SLOR INTERNATIONAL INCORPORATED <br /> w Secorcom <br /> SECOR <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 0.10 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/L]) ' (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 /> 7 <br />