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Methods for Chemical Analysis of Water and Wastes

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Methods for Chemical Analysis of Water and Wastes ( methods-chemical-analysis-water-and-wastes )

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9 PrecIsIon and Accuracy 9 1 The two 011 and grease methods m thIS manual were tested by a smgle laboratory (EMSL) on sewage ThIS method determined the 011 and grease level in the sewage to be 12 6 mg/1 When 1 liter portiOns of the sewage were dosed wIth 140 mg of a mIxture of # 2 fuel 011 and Wesson 011, the recovery was 93% wIth a standard devIatiOn of ±O 9 mg/1 Blbhography 1 Standard Methods for the ExaminatiOn of Water and Wastewater, 14th EdItiOn, pSIS, Method 502A, (1975) 2 Blum, K A, and Taras, M J, "DeterminatiOn ofEmulsIfymg all m Industnal Wastewater", JWPCF Research Suppl 40, R404 (1968) 413 1-3

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