PDF Publication Title:
Text from PDF Page: 135
OptImum ConcentratIon Range: Detection LimIt: 1 ug/l 5-100 ug/l CHROMIUM Method 218.2 (Atomic Absorption, furnace technique) PreparatIon of Standard SolutIon 1 StocksolutIOn Prepareasdescnbedunder"dIrectaspIratIonmethod" 2 Calcmm NItrate SolutIOn DIssolve 11 8 grams of calcmm mtrate, Ca(N03)2 • 4H20 (analytIcal reagent grade) m delOmzed mstl1led water and dIlute to 100 ml 1 ml = 20 mg Ca 3 Prepare ddutions of the stock chrommm solutIOn to be used as cahbratlOn standards at the tIme ofanalysIs The cahbratlOn standards should be prepared to contam 05% (v/v) HN03 To each 100 ml ofstandard and sample ahke, add 1ml of30% H20 2 and 1ml of the calcmm filtrate solutIOn Sample PreservatIOn 1 For sample handhng and preservatIOn, see part 41 of the AtomIC AbsorptIon Methods section of thIS manual Sample PreparatIon 1 Prepare as descnbed under "dIrect aspIratIOn method" Sample SolutIons for analysIs shou1dcontamO 5% v/vHN03 Instrument Parameters (General) 1 DrymgTImeandTemp 30sec-125°C 2 AshmgTImeand Temp 30sec-10oo°C 3 AtomIzmg TIme and Temp 10 sec-27oo°C 4 Purge Gas Atmosphere Argon 5 Wavelength 357 9 nm 6 Other operatmg 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 of thIS manual Approved for NPDES and SDWA Issued 1978 2182-1 STORET NO. 01034 Dissolved 01030 Suspended 01031PDF Image | Methods for Chemical Analysis of Water and Wastes
PDF Search Title:
Methods for Chemical Analysis of Water and WastesOriginal File Name Searched:
epa600_4_79_020.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)