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【英文标准名称】:Respiratoryprotectivedevices-Methodsoftest-Determinationofparticlefilterpenetration
【原文标准名称】:呼吸保护装置.试验方法.粒子过滤器渗透性的测定
【标准号】:BSEN13274-7-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2003-01-06
【实施或试行日期】:2003-01-06
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:面具(防护工作服);过滤器;供气呼吸装置;呼吸装置;渗透性试验;呼吸器;职业安全;机械试验;安全装置;粒状材料
【英文主题词】:Aerosols;Bonnets;Breathingapparatus;Combinedfilters;Definition;Definitions;Dustdeposit;Dustfilters;Filteringdevices;Filters;Helmets;Leakage;Marking;Masks;Occupationalsafety;Particlefilters;Passages;Penetrations;Permability;Protectingmasks;Protectiveclothing;Protectiveequipment;Respirators;Respiratorysystem;Safetyengineering;Specification(approval);Testing;Volumeflowrate;Workplacesafety
【摘要】:ThisEuropeanStandardspecifiestheprocedurefortestingparticlefilterpenetrationforrespiratoryprotectivedevices.
【中国标准分类号】:C73
【国际标准分类号】:13_340_30
【页数】:20P.;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforMeasuringElementsinWaterbyFlameAtomicAbsorptionSpectrophotometry
【原文标准名称】:火焰原子吸收分光光度法测定水中元素的标准实施规范
【标准号】:ASTMD4691-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D19.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:水;测量;元件
【英文主题词】:atomicabsorptionspectrophotometry;flame
【摘要】:Elementalconstituentsinwaterandwastewaterneedtobeidentifiedtosupporteffectivewaterqualitymonitoringandcontrolprograms.Currently,oneofthemostwidelyusedandpracticalmeansformeasuringconcentrationsofelementsisbyatomicabsorptionspectrophotometry.Themajoradvantageofatomicabsorptionoveratomicemissionisthealmosttotallackofspectralinterferences.Inatomicemission,thespecificityofthetechniqueisalmosttotallydependentonmonochromatorresolution.Inatomicabsorption,however,thedetectorseesonlythenarrowemissionlinesgeneratedbytheelementofinterest.1.1Thispracticecoversgeneralconsiderationsforthequantitativedeterminationofelementsinwaterandwastewaterbyflameatomicabsorptionspectrophotometry.Flameatomicabsorptionspectrophotometryissimple,rapid,andapplicabletoalargenumberofelementsindrinkingwater,surfacewaters,anddomesticandindustrialwastes.Whilesomewatersmaybeanalyzeddirectly,otherswillrequirepretreatment.1.2Detectionlimits,sensitivity,andoptimumrangesoftheelementswillvarywiththevariousmakesandmodelsofsatisfactoryatomicabsorptionspectrometers.Theactualconcentrationrangesmeasurablebydirectaspirationaregiveninthespecifictestmethodforeachelementofinterest.Inthemajorityofinstancestheconcentrationrangemaybeextendedlowerbyuseofelectrothermalatomizationandconverselyextendedupwardsbyusingalesssensitivewavelengthorrotatingtheburnerhead.Detectionlimitsbydirectaspirationmayalsobeextendedthroughsampleconcentration,solventextractiontechniques,orboth.Wheredirectaspirationatomicabsorptiontechniquesdonotprovideadequatesensitivity,theanalystisreferredtoPracticeD3919orspecializedproceduressuchasthegaseoushydridemethodforarsenic(TestMethodsD2972)andselenium(TestMethodsD3859),andthecoldvaportechniqueformercury(TestMethodD3223).1.3Becauseofthedifferencesamongvariousmakesandmodelsofsatisfactoryinstruments,nodetailedoperatinginstructionscanbeprovided.Insteadtheanalystshouldfollowtheinstructionsprovidedbythemanufacturerofaparticularinstrument.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardstatementsseeSection9.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:6P.;A4
【正文语种】: