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THALLIUM Method 279.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: Detection LImIt: 1 ug/l 5-100 ug/l PreparatIOn of Standard SolutIOn 1 Stock solutIOn Prepare as descnbed under "dIrect aspIratIOn method" 2 Prepare dl1utIOns of the stock solutIOn to be used as calIbratIOn standards at the tIme of analysIs ThesesolutIOnsarealsotobeusedfor"standardaddItIOns" 3 The calIbratIOn standard should be dl1uted to contam 05% (v/v) HN03 Sample Preservation 1 For sample handhng and preservatIOn, see part 4 1 of the AtomIc AbsorptIOn Methods sectIOnofthISmanual Sample Preparation 1 Prepare as descnbed under "dIrect aspIratIon method" Sample solutIOns for analySIS shouldcontam05% (v/v)HN03 Instrument Parameters (General) 1 DrymgTImeandTemp 30sec@ 125°C 2 Ashmg TIme and Temp 30 sec @ 400°C 3 AtomIzmg TIme and Temp 10 sec @ 2400°C 4 Purge Gas Atmosphere Argon 5 Wavelength 276 8 nm 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 ofthIS manual Approved for NPDES Issued 1978 2792-1 STORET NO. Total 01059 Dissolved 01057 Suspended 01058PDF Image | Methods for Chemical Analysis of Water and Wastes
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