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P ALLADIUM Method 253.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: 20-400 ug/l Detection LImIt: 5 ug/l Preparation of Standard SolutIon 1 2 3 Sample 1 Sample 1 Stock solutIOn Prepare as descnbed under "dIrect aspIratIon method" Prepare dIlutIOns of the stock solutIOn to be used as calIbratIOn standards at the time of analysis ThesesolutIOnsarealsotobeusedfor"standardaddItIons" The calIbratIOn standard should be dIluted to contaIn 0 5% (vIv) HN03 PreservatIon For sample handlIng and preservatIOn, see part 4 1 ofthe AtomIC AbsorptIon Methods sectIOn of thIS manual PreparatIon Prepare as descnbed under "dIrect aspIratIOn method" Sample solutIOn for analySIS should contaIn 0 5%(v/v) HN03 Instrument Parameters (General) 1 DryIngTImeandTemp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-1OOO°C 3 AtomIZIng TIme and T emp 10 sec-2800°C 4 Purge Gas Atmosphere Argon 5 Wavelength 247 6 nm 6 Other'operatIng parameters should be set as speCIfied by the partIcular Instrument manufacturer AnalYSIS Procedure 1 For the analySIS procedure and the calculatIOn, see "Furnace Procedure" part 9 3 of the AtomiC AbsorptIOn Methods sectIOn ofthIS manual Notes 1 The above concentratIOn values and Instrument conditIOns are for a PerkIn-Elmer HGA- 2100, based on the use of a 20 ul mJectIOn, contInUOUS flow purge gas and pyrolytIc graphIte Smaller SIze furnace deVIces or those emplOyIng faster rates of atomIzatIOn can be operated USIng lower atomIzatIon temperatures for shorter tIme penods than the above recommended settIngs Approved for NPDES Issued 1978 2532-1 STORET NO. Total 01210PDF Image | Methods for Chemical Analysis of Water and Wastes
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