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1 2 3 Sample 1 Sample 1 StockSolutIOn Prepareasdescnbedunder"directaspiratIOnmethod" Prepare dilutIOns of the stock solution to be used as calIbration standards at the time of analysIs ThesesolutIOnsarealsotobeusedfor"standardadditions" The calIbratIOn standard should be diluted to contam 0 5% (vIv) HN03 Preservation For sample handlIng and preservatIOn, see part 4 1 of the Atomic Absorption Methods section ofthis manual Preparation Prepare as descnbed under "direct aspiratIOn method" Sample solutIOn for analysIs should contam 0 5% (vIv) HN03 ZINC Method 289.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: Detection Limit: 0 05 ug/l Preparation of Standard Solution 0 2-4 ug/l Instrument 1 DrymgTimeandTemp 30sec-125°C 2 AshmgTimeandTemp 30sec-400°C 3 AtomlzmgTimeandTemp 10sec-2500°C 4 PurgeGasAtmosphere Argon 5 Wavelength 213 9 nm 6 Other opera.tmg 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 Parameters (General) 2892-1 STORET NO. Total 01092 Dissolved 01090 Suspended 01091PDF Image | Methods for Chemical Analysis of Water and Wastes
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