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SIL VER Method 272.2 (Atomic Absorption, furnace technique) Optimum ConcentratIon Range: Detection Limit: 0 2 ug/l Preparation of Standard SolutIon 1-25 ug/l 1 2 3 Sample 1 Sample 1 StockSolution Prepareasdescnbedunder"directaspIrationmethod" Prepare dIlutIOns of the stock solutIOn to be used as cahbratIOn standards at the time of analysIs ThesesolutIOnsarealsotobeusedfor"standardaddItIons" The cahbratIOn standard should be dIluted to contam 05% (v/v) HN03 Preservation For sample handhng and preservatIon, see part 4 1 of the AtomIC AbsorptIOn Methods sectIon of thIS manual PreparatIon Prepare as descnbed under "dIrect aspIratIOn method" Sample solutIOns for analysIs shouldcontamO 5% (v/v)HN03 Instrument Parameters (General) 1 DrymgTImeand Temp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-400°C 3 AtomIzmg TIme and T emp 10 sec-2700°C 4 Purge Gas Atmosphere Argon 5 Wavelength 328 1nm 6 Other operatmg parameters should be set as specIfied by the partICular mstrument manufacturer AnalysIs Procedure 1 For the analysIs procedure and the calculatIOn, see "Furnace Procedure" part 9 3 of the AtomIC AbsorptIOn Methods sectIOn of thIS manual Approved for NPDES and SDWA Issued 1978 272 2-1 STORET NO. Total 01077 Dissolved 01075 Suspended 01076PDF Image | Methods for Chemical Analysis of Water and Wastes
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