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ANTIMONY Method 204.2 (Atomic Absorption, furnace technique) Optimum Concentration Range· Detection LimIt: 3 ug/1 PreparatIOn of Standard Solution 20-300 ug/1 1 2 3 Sample 1 Sample 1 StocksolutlOn Prepareasdescnbedunder"dIrectaspIratlOnmethod" Prepare dl1utlOns of the stock solutlOn to be used as cahbratlOn standards at the tIme of analysIs ThesesolutlOnsarealsotobeusedfor"standardaddItlOns" The cahbratlOn standard should be dl1uted to contam 0 2% (vIv) HN03 Preservation For sample handhng and preservatlOn, see part 4 1 of the AtomIC AbsorptlOn Methods section ofthIS manual Preparation The procedures for preparatlOn of the sample as gIven m parts 4 1 1 thru 4 1 3 of the AtomIC AbsorptlOn Methods section of thIS manual should be followed mcludmg the addItlOn of sufficIent 1 1 HCl to dIssolve the dIgested resIdue for the analysIs of suspended or total antImony The sample solutlOns used for analysIs should contam 2% (v/v)HN03 Instrument Parameters (General) 1 DrymgTlmeand Temp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-800°C 3 Atomlzmg TIme and Temp 10 sec-2700°C 4 Purge Gas Atmosphere Argon 5 Wavelength 2176 nm 6 Other operatmg parameters should be set as specIfied by the particular mstrument manufacturer AnalYSIS Procedure 1 For the analysIs procedure and the calculatlOn, see "Furnace Procedure" part 93 ofthe AtomIc AbsorptlOn Methods sectlOn of thIS manual Approved for NPDES Issued 1978 2042-1 STORET NO. Total 01097 Dissolved 01095 Suspended 01096PDF Image | Methods for Chemical Analysis of Water and Wastes
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