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COBALT Method 219.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: DetectIOn LImit: 1 u g / l Preparation of Standard SolutIOn 5-100 ug/l 1 2 3 Sample 1 Sample 1 Stock solutIOn Prepare as descnbed under "dIrect aSpIratIOn method" Prepare dl1utlons of the stock solutIOn to be used as cahbration standards at the time of analysIs Thesesolutionsarealsotobeusedfor"standardaddItions" The cahbratton standard should be dl1uted to contam 05% (v/v) HN03 Preservation For sample handlmg and preservatIOn, see part 4 1 of the AtomIC AbsorptIOn Methods sectIOn of thIS manual Preparation Prepare as descrIbed under "dIrect aspIratIon method" Sample SolutIons for analysIs should contam 05% (v/v) HN03 Instrument Parameters (General) 1 DrymgTImeandTemp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-900°C 3 AtoIllizmg TIme and Temp 10 sec-27oo°C 4 Purge Gas Atmosphere Argon 5 Wavelength 2407 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 SeGtlon ofthIS manual Notes 1 The above concentratIOn vailles and lUstrument condItIOns are for a Perkm-Elmer HGA- 2100, based on the use of a 20 UllUJectlOn, contlUuous flow purge gas and non-pyrolytic Approved for NPDES Issued 1978 2192-1 STORET NO. Total 01037 Dissolved 01035 Suspended 01036PDF Image | Methods for Chemical Analysis of Water and Wastes
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