PDF Publication Title:
Text from PDF Page: 437
6 2 Color companson 7 8 1 6224 Read the sulfide concentratiOn from the calibratiOn curve CalculatiOns 7 1 VIsual comparIson WIth methylene blue solutiOn I (56), adjusted so that 005 ml (1 drop) = 1 0 mg/1 sulfide and a 7 5 ml sample mg/1 sulfide = number drops methy:lene blue solutiOn I (5 6) + 0 1 x [number of drops methylene blue solutiOn II (5 7)] 7 2 PhotometrIc see 6 2 2 4 PrecIsIon and Accuracy 8 1 The precIsIon has not been determmed The accuracy IS about ±10% BIbliography Standard Methods for he ExammatiOn ofWater and Wastewater, 14th edItiOn, p 503, Method 428C(1975) 621 VIsual 62 1 1 62 1 2 Add methylene blue solutiOn I (56) and/or II (57) (dependmg on sulfide concentratiOn and accuracy desIred) dropwise to tube B (6 14) untIl the color matches that developed m the first tube If the concentratiOn exceeds 20 mg/1, repeat 6 2 11 usmg a portiOn of the sample dl1uted to one tenth 6 2 2 Photometnc 6221 Usea 1cmcellfor0 1to20mg/1 Usea 10cmcellforupto20mg/1 6222 ZeromstrumentwIthportiOnofsamplefromtubeB(6 14) 6223 Prepare calibratiOn curve from data obtamed m methylene blue standardIzatiOn (5 8), plottmg concentraton obtamed from tItnmetnc iOdIde procedure (Method 376 1) versus absorbance A straIght hne relatiOnshIp can be assumed from 0 to 1.0 mg/1 3762-3PDF 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)