Transcription of Method 365.3: Phosphorous, All Forms (Colorimetric ...
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Method 365.3: Phosphorous, All Forms (Colorimetric ...
1978 Method : Phosphorous, All Forms (Colorimetric, Ascorbic Acid, Two Reagent) Method #: Approved for NPDES (Issued 1978) TITLE: Phosphorous, All Forms (Colorimetric, Ascorbic Acid, Two Reagent) ANALYTE: CAS # P Phosphorus 7723-14-0 INSTRUMENTATION: Spectrophotometer STORET No. See Section 4 Scope and Application These methods cover the determination of specified Forms of phosphorus in drinking, surface and saline waters, domestic and industrial wastes. The methods are based on reactions that are specific for the orthophosphate ion.
8.2.3 Treat the samples as in 8.1.3. 8.2.4 Determine phosphorus as outlined in (8.3) orthophosphate. 8.3 Orthophosphate 8.3.1 To 50 mL of sample and/or standards, add 1 mL of 11 N sulfuric acid
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