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OptImum ConcentratIOn Range: SensitiVIty. 4 mg/l DetectIonLImIt 0 8mg/l PreparatIon of Standard SolutIon STORET NO. Total 01102 Dissolved 01100 Suspended 01101 10-300 mg/l usmg a wavelength of286 3 nm 1 2 Sample 1 Sample 1 Stock Solution DIssolve 1 000 g oftm metal (analytical reagent grade) m 100 ml ofconc Hel and dilute to 1hter wIth deIOnIzed dIstllled water 1ml = 1mg Sn (1000 mg/l) Prepare dllutIOns of the stock tm solutIOn to be used as calIbratIOn standards at the time ofanalysIs ThecalIbratIOnstandardsshouldbepreparedusmgthesametypeofaCIdand at the same concentratIOn as w1l1 result m the sample to be analyzed eIther dIrectly or after processmg PreservatIon For sample handlIng and preservatIOn, see part 4 1 of the AtomIc AbsorptIOn Methods sectIOn of thIS manual PreparatIon The procedures for preparatIon of the sample as gIven m parts 4 1 1 thru 4 1 4 of the AtomIc AbsorptIOn Methods sectIOn of thIS manual have been found to be satIsfactory TIN Method 282.1 (Atomic Absorption, direct aspiration) Instrumental Parameters (General) 1 Tm hollow cathode lamp 2 Wavelength 2863 nm 3 Fuel Acetylene 4 OXIdant NItrous OXIde 5 Typeofflame Fuelnch AnalysIs Procedure 1 For the analysIs procedure and the calculatIOn, see "DIrect ASpIratIOn", part 9 1 of the AtomIc AbsorptIOn Methods sectIOn ofthIs manual Approved for NPDES Issued 1974 Editonal reVISIon 1978 282 I-IPDF Image | Methods for Chemical Analysis of Water and Wastes
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