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TIN Method 282.2 (Atomic Absorption, furnace technique) Optimum Concentration Range: Detection LImit: 5 ug/l 20-300 ug/l Preparation of Standard SolutIOn 1 StocksolutlOn Prepareasdescnbedunder"dIrectaspIratIonmethod" 2 Prepare dIlutlOns of the stock solutlOn to be used as cahbratlOn standards at the tIme of analysIs ThesesolutlOnsarealsotobeusedfor"standardaddItions" 3 The calIbratlOn standard should be dIluted to contam 2% (v/v) HN03 Sample Preservation 1 For sample handlIng and preservatlOn, see part 4 1 of the AtomIC AbsorptlOn Methods sectlOn of thIS manual Sample PreparatIOn 1 The procedures for preparatlOn of the sample as gIven m parts 4 1 1 thru 4 1 3 of the AtomIC AbsorptlOn Methods sectlOn of thIS manual should be followed mcludmg the addItIon of suffiCIent 1 1 HCl to dIssolve the dIgested reSIdue for the analysIs of suspended or total tm The sample solutlOns used for analysIs should contam 2% (v/v) HN03 Instrument Parameters (General) 1 DrymgTImeand Temp 30sec-125°C 2 Ashmg TIme and Temp 30 sec-600°C 3 AtomIzmg TIme and Temp 10 sec-2700°C 4 Purge Gas Atmospere Argon 5 Wavelength 224 6 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 9 3 of the AtomIC AbsorptlOn Methods sectlOn of thIS manual Approved for NPDES Issued 1978 2822-1 STORET NO. Total 01102 Dissolved 01100 ... 1..... ' 1 Suspended 01101 ,,PDF Image | Methods for Chemical Analysis of Water and Wastes
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