PDF Publication Title:
Text from PDF Page: 420
SULFATE Method 375.1 (Colorimetric, Automated, Chloranilate) STORET NO. Total 00945 1 Scope and ApphcatiOn 1 1 ThIs automated method IS apphcable to dnnkmg and surface waters, domestic and mdustnal wastes, m the range of 10 to 400 mg S04/1 ApproXImately 15 samples per hour can be analyzed 2 Summary of Method 2 1 When soItd banum chloramlate IS added to a solutiOn contammg sulfate, banum sulfate IS preCIpItated, releasmg the hIghly colored aCId chloramlate Ion The color mtenslty m the resultmg chloramhc aCId IS proportiOnal to the amount ofsulfate present 3 Sample Handhng and PreservatiOn 3 1 RefngeratiOn at 4°C 4 Interferences 4 1 Cations, such as calcIUm, alummum, and Iron, mterfere by preclpltatmg the chloramlate These iOns are removed automatically by passage through an Ion exchange column 5 Apparatus Techmcon AutoAnalyzer conslstmg of 5 1 1 Sampler I 5 1 2 Contmuous filter 513 Mamfold 5 1 4 ProportiOmng pump 5 1 5 Colonmeter eqUIpped WIth 15 mm tubular flow cell and 520 nm filters 5 1 6 Recorder 5 1 7 Heatmg bath, 45°C MagnetIc stirrer 61 Banum chloramlate Add 9 g of banum chloramlate (BaC6CI20 4) to 333 ml of ethyl alcohol and dIlute to lItter WIth dlsttlled water 62 Acetate buffer, pH 4 63 DIssolve 13 6 g ofsodIUm acetate m dIstIlled water Add 6 4 ml ofacetIc aCId and dtlute to lItter WIth dlsttlled water Make fresh weekly 63 NaOH-EDTA solutIon DIssolve 65 g ofNaOH and 6 g ofEDTA m dlsttlled water and dtlute to lItter NOTE 1: ThiS solutiOn IS also used to clean out mamfold system at end ofsampItng run 64 Ionexchangeresm Dowex-50W-X8,lomcform-H+ NOTE2:ColumnISpreparedbysuckmgaslurryoftheresmmto 12mchesof3/16-mch OD sleevmg ThiS may be convemently done by usmg a pipette and a loose-fittmg glass wool plug m the sleeve The column, upon exhaustiOn, turns red. Issued 1971 5 1 5 2 6 Reagents 375 1-1PDF 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)