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ALUMINUM Method 202.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: DetectIOn LimIt: 3 ug/l 20-200 ug/l Preparation of Standard Solution 1 Stock solutlOn Prepare as descnbed under "dIrect aspiratlOn method" 2 Prepare dIlutIons of the stock solutIon to be used as cahbratlOn standards at the tIme of analysIs Thesesolutionsarealsotobeusedfor"standardaddItions" 3 ThecalibratlOnstandardshouldbedIlutedtocontam05%(vIv)HN03 Sample Preservation I For sample handlIng and preservatlOn, see part 4 1 of the AtomIC AbsorptlOn Methods section ofthIS manual - Sample Preparation 1 Prepare as descnbed under "dIrect aspiratlOn method" Sample SolutIons for analysIs shouldcontamO 5% (v/v)HN03 Instrument Parameters (General) 1 Drymg TIme and Temp 30sec-125°C 2 AshmgTImeand Temp 30sec-1300°C 3 AtomIzmg TIme and T emp 10 sec-27oo°C 4 Purge Gas Atmmosphere Argon 5 Wavelength 309 3 nm 6 Other operatmg parameters should be set as specIfied by the particular mstrument manufacturer AnalysIS Procedure 1 For the analysIs procedure and the caculatlon, see "Furnace Procedure" part 9 3 of the AtomIC AbsorptlOn Methods sectlOn of thIS manual Approved for NPDES Issued 1978 2022-1 STORET NO. Total 01105 Dissolved 01106 Suspended 01107PDF Image | Methods for Chemical Analysis of Water and Wastes
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