ASTM D 1452-1980 用螺旋钻作土壤勘探和取样

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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】:ASTMD5543-1994(2005)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:水;试验;需氧量;锅炉;蒸汽;溶解氧DO;玻璃安瓿瓶;仪器测量;L溶解氧DO;水平∧100MUG;等级溶解氧;RHODAZINED;蒸汽浓缩物;低的;二色性仪器;锅炉进水器;颜色精密比较测定机法;LT;氧;比色分析;安瓿瓶
【英文主题词】:Ampoules;Bichromaticinstrument;Boiler;Boilerfeedwater;Colorcomparatormethod;Colorimetricanalysis-water;Dissolvedoxygen(DO);Glassampoules;Instrumentalmeasurement-water;Oxygendemand-water;RhodazineD;Steam;Steamcondensate;low-Leveldissolvedoxygen-water,test,;Ampoules;Bichromaticinstrument;Boilerfeedwater;Colorcomparatormethod;Colorimetricanalysis;Dissolvedoxygen(DO);Oxygen;RhodazineD;Steam;Steamcondensate;low-level(∧lt;100[mu]g/L)dissolvedoxygen(DO)-water,test
【摘要】:Dissolvedoxygenisdetrimentalincertainboilerandsteamcyclesbecauseitmayacceleratecorrosion.Concentrationsabove10x03BC;g/Lareunacceptableinmanyhigh-pressureboilersystems.Theefficiencyofdissolvedoxygenremovalfromboilerfeedwaterbychemicalormechanicalmeans,orboth,isdeterminedbymeasuringtheconcentrationbeforeandaftertheprocess.Themeasurementisalsomadetocheckforairleakageintotheboilersystem.Theoxygentreatmentmethodforboilercorrosionreductionrequiresinjectionofoxygenintotheboilerfeedwater.Theresultingoxygenlevelismonitoredforcontrolpurposes.1.1Thesetestmethodscoverthedeterminationoflow-level(∧lt;100[mu]g/L)dissolvedoxygeninthermal-cyclesteamcondensate,deaeratedboilerfeedwater,boilerwater,anddeaerateddeionizedwater.Thefollowingtestmethodsareincluded:Range,mg/LSectionsTestMethodA--ColorComparatorTest0to1008to17MethodUsingSelf-FillingGlassAmpoulesTestMethodB--InstrumentTestMethod0to10018to26UsingSelf-FillingGlassAmpoules1.2Thesetestmethodsmaybeapplicabletoelectronic-grade,pharmaceutical-grade,andotherhigh-puritywaters,althoughthesewerenotaddressedinthecollaborativestudy.1.3TestMethodAisacolorimetricprocedureapplicabletodissolvedoxygeninwaterintherangefrom0to100[mu]g/L.1.4TestMethodBisaninstrumentedcolorimetricprocedureapplicabletodissolvedoxygeninwaterintherangefrom0to100[mu]g/L.1.5Itistheuser'sresponsibilitytoensurethevalidityofthesetestmethodsforwatersofuntestedmatrices.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:7P.;A4
【正文语种】:


Product Code:SAE AS1735
Title:Nut, Coupling, Rigid, Fixed Cavity, Threaded, Ferrule Type Tube Ends, Type II
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.