ASTM D6832-2002 用1,5-二苯卡巴肼离子色谱法和分光光度测定法测定工作场所气体中六价铬的标准试验方法

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【英文标准名称】:StandardTestMethodfortheDeterminationofHexavalentChromiuminWorkplaceAirbyIonChromatographyandSpectrophotometricMeasurementUsing1,5-diphenylcarbazide
【原文标准名称】:用1,5-二苯卡巴肼离子色谱法和分光光度测定法测定工作场所气体中六价铬的标准试验方法
【标准号】:ASTMD6832-2002
【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(ASTM)
【起草单位】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:hexavalentchromium;workplaceatmospheres;ionchromatography;spectrophotometry;
【摘要】:Airbornehexavalentchromiumiscarcinogenic(1),4andanalyticalmethodsforthemeasurementofthisspeciesinworkplaceaerosolsaredesired.Workerexposuretohexavalentchromiumoccursprimarilythroughinhalation(1),andthistestmethodprovidesameansforexposureassessmenttothishighlytoxicspecies.Analyticalresultsfromthisprocedurecanbeusedforregulatorycompliancepurposes(2).1.1Thistestmethodspecifiesamethodforthedeterminationofthetime-weightedaveragemassconcentrationofhexavalentchromiuminworkplaceair.1.2Themethodisapplicabletothepersonalsamplingoftheinhalablefractionofairborneparticles,asdefinedinISO7708,andtoarea(static)sampling.1.3Thesampledissolutionprocedurespecifiesseparateproceduresforsolubleandinsolublehexavalentchromium.1.4Themethodisapplicabletothedeterminationofmassesof0.01956;gto10956;gofhexavalentchromiumpersamplewithoutdilution.1.5Theconcentrationrangeforhexavalentchromiuminairforwhichthisprocedureisapplicableisapproximately0.1956;g/m179;to100956;g/m179;,assuming1m179;ofairsample.Therangecanbeextendedupwardsbyappropriatedilution.1.6Interconversionoftrivalentandhexavalentchromiumspeciesmayoccurduringsamplingandsamplepreparation,buttheseprocessesareminimizedtotheextentpossiblebythesamplingandsamplepreparationproceduresemployed.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C66
【国际标准分类号】:13_040_30
【页数】:9P.;A4
【正文语种】:


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Product Code:SAE AMS5786
Title:Nickel Alloy, Corrosion and Heat-Resistant, Welding Wire, 62.5Ni - 5.0Cr - 24.5Mo - 5.5Fe (NONCURRENT Nov 2007)
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat-resistant nickel alloy in the form of welding wire.【英文标准名称】:InformationTechnology-DatabaseLanguages-SQL-Part10:ObjectLanguageBinding(SQL/OLB)
【原文标准名称】:信息技术.数据库语言.SQL.第10部分:对象语言汇编
【标准号】:ANSI/INCITS/ISO/IEC9075-10-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据库语言;结构化询问语言;信息技术
【英文主题词】:Artificiallanguages;Concepts;Dataprocessing;Databaselanguages;Definition;Definitions;Documentations;Documents;Factualdatabases;Frames;Grammar;Informationinterchange;Informationtechnology;Languagebindings;SQL;StructuredQueryLanguage;Textprocessings
【摘要】:ThispartofISO/IEC9075definesextensionsofDatabaselanguageSQLtosupportembeddingofSQLstatementsintoprogramswrittenintheJava;programminglanguage(JavaisaregisteredtrademarkofSunMicrosystems,Inc.).TheembeddingofSQLintoJavaiscommonlyknownasSQLJ.
【中国标准分类号】:L74
【国际标准分类号】:35_060
【页数】:
【正文语种】:英语