ASTM D5543-2009 水中低水平溶解氧的标准试验方法

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【英文标准名称】:StandardTestMethodsforLow-LevelDissolvedOxygeninWater
【原文标准名称】:水中低水平溶解氧的标准试验方法
【标准号】:ASTMD5543-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Ampoules;Bichromaticinstrument;Boilerfeedwater;Colorcomparatormethod;Colorimetricanalysis--water;Dissolvedoxygen(DO);Glassampoules;Instrumentalmeasurement--water;RhodazineD;Steam;Steamcondensate;Totaloxygendemand(TOD)
【摘要】:Dissolvedoxygenisdetrimentalincertainboilerandsteamcyclesbecauseitmayacceleratecorrosion.Concentrationsabove10x03BC;g/Lareunacceptableinmanyhigh-pressureboilersystems.Theefficiencyofdissolvedoxygenremovalfromboilerfeedwaterbychemicalormechanicalmeans,orboth,isdeterminedbymeasuringtheconcentrationbeforeandaftertheprocess.Themeasurementisalsomadetocheckforairleakageintotheboilersystem.Theoxygentreatmentmethodforboilercorrosionreductionrequiresinjectionofoxygenintotheboilerfeedwater.Theresultingoxygenlevelismonitoredforcontrolpurposes.1.1Thistestmethodcoversthedeterminationoflow-level(x003C;100x03BC;g/L)dissolvedoxygeninthermal-cyclesteamcondensate,deaeratedboilerfeedwater,boilerwater,anddeaerateddeionizedwater.Thefollowingtestmethodisincluded:
Range,x03BC;g/L
Sections
ColorComparatorTestMethodUsingSelf-FillingGlassAmpoules
0to100
8to17