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NICKEL Method 249.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: Detection Limit: 1 u g / l Preparation of Standard Solution 5-50 ug/l 1 2 . 3 StocksolutiOn Prepareasdescnbedunder"dIrectaspIratiOnmethod" Prepare dIlutiOns of the stock solutiOn to be used as calIbratiOn standards at the tIme of analysIs TheseSolutIonsarealsotousedfor"standardaddItiOns" The calIbratIon standard should be dIluted to contam 05% (v/v) HN03 Sample Preservation 1 For sample handlIng and preservation, see part 4 1 of the AtomIC AbsorptiOn Methods sectiOn of this manual Sample Preparation 1 Prepare as descnbed under "direct aSpIratiOn method" Sample solutions for analySIS should contam 05% (v/v) HN03 Instrument Parameters (General) 1 Drymg Time and Temp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-800oe 3 Atomlzmg Time and Temp 10 sec-27oo°C 4 Purge Gas Atmosphere Argon 5 Wavelength 2320nm 6 Other operating 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 ofthI~ manual Notes 1 The above concentratiOn values and mstrument conditions are for a Perkm-Elmer HGA- 2100, based on the use of a 20 ul mJectlon, continuous flow purge gas and pyrolytlc Approved for NPDES Issued 1978 STORET NO. Total 01067 Dissolved 01065 Suspended 01066PDF Image | Methods for Chemical Analysis of Water and Wastes
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