Methods for Chemical Analysis of Water and Wastes

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Methods for Chemical Analysis of Water and Wastes ( methods-chemical-analysis-water-and-wastes )

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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" ThecalIbratIOnstandardshouldbedIlutedtocontam05% (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 descnbed under "dIrect aspIration method" Sample solutiOn for analysIs should contam 0 5% (v/v)HN03 V ANADIUM ,I, Method 286.2 (Ato~~c Absorption, furnace technique) OptImum Concentration Range: Detection LimIt: 4 ug/1 Preparation of Standard SolutIOn ,I' 10-200 ug/l STORET NO. Total 01087 Dissolved 01085 Suspended 01086 ,' Instrument Parameters (General) 1 DrymgTImeand Temp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-1400°C 3 AtomIzmgTImeand Temp 15 sec-2800°C 4 Purge Gas Atmosphere Argon 5 W avelength 318 4 n m 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 Issued 1978 2862-1

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