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RHENIUM Method 264.1 (Atomic Absorption, direct aspiration) STORET NO. Total* OptImum ConcentratIon Range: 50-1000 mgl1 us10g a wavelength of346 Onm SensItIvity: 15 mgl1 DetectIOn LImit: 5 mg/1 PreparatIon of Standard SolutIon 1 Stock solution DIssolve 1 554 g of potassIUm perrhenate, KRe04' In 200 ml deIOmzed water Dlluteto1lIterwIth1%(vIv)H2S04(1ml = 1mgRe) 2 A standard AAS solutIon of ammomum perrhenate, NH4Re04, 1000 mgl1 10 aqueous matnx IS avallable from Alfa Products, Beverly, Massachussetts.01915 Cat #88089 3 Prepare dIlutIOns of the stock solutIOn to be used as calIbratIon standards at the tIme of analysIs The calIbratIOn standards should be prepared us10g 1% (vIv) HN03 Sample PreservatIOn 1 For sample handl10g and preservatIOn, see part 4 1 of the AtomIC AbsorptIon Methods sectIon of thIS manual Sample PreparatIon 1 Transfer a representative 100 ml alIquot of the well mIxed sample to a Gnffin beaker and add 1mlofcone dIstIlledHN03 Placethebeakeronasteambathorhotplateandwarm for 15 mmutes Cool and filter to remove 1Osoluble matenal that could clog the atomIzer Adjustthevolumebackto100ml ThesampleISnowreadyforanalysIs Instrumental Parameters (General) 1 Rhemum hollow cathode lamp 2 Wavelength 3460 nm 3 Fuel Acetylene 4 OXIdant NItrous OXIde 5 Typeofflame Fuelnch AnalysIs Procedure 1 For the analysIs procedure and the calculation, see "dIrect aspIratIOn" part 9.1 of the AtomIC AbsorptIOn Methods sectlOn ofthIS manual *Not AssIgned Issued 1976 Techmcal reVISIon 1978 264 1-1PDF Image | Methods for Chemical Analysis of Water and Wastes
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