ANSI/ASTM D6692-2001 海水中无线电标签聚合塑料生物降解性的测定方法

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【英文标准名称】:TestMethodforDeterminingtheBiodegradabilityofRadiolabeledPolymericPlasticMaterialsinSeawater
【原文标准名称】:海水中无线电标签聚合塑料生物降解性的测定方法
【标准号】:ANSI/ASTMD6692-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:2001-06-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:biodegradability;plastics;seawater;testmethods
【摘要】:Thistestisusedtodeterminethedegreeofaerobicbiodegradationofpolymericcompoundsutilizedinplasticmaterialsbydeterminingthelevelofrespirationofsuchradiolabeledcarboncompoundstoradiolabeledcarbondioxide.Thetestisdesignedtoutilizethenaturallyoccurringmicrobesinseawaterastheinoculumfortheenrichmentandsubsequentmineralization(biodegradation)ofthetestpolymerusingitasacarbonandenergysourceresultinginacarbondioxideasanendproduct.Thetestmethodrequiresthatthepolymerstobeassayedaresynthesizedusingtheradioisotope,carbon-14,andthatthecompoundorplasticmaterialbeuniformlylabeledwithcarbon-14.Ascontrols,knownbiodegradablecompounds,suchasglucoseorstarch,alsouniformlylabeledwithcarbon-14,areruninordertodeterminethebiologicalactivityofthenaturalpopulation.Theconcentrationofaddedpolymersshallbekeptlowsoasnottocauselimitationbyoxygen,andtheseawaterinoculumisamendedwithnitrogenandphosphoruscompoundstoensurethatgrowthinnotlimitedbythesenutrients.Thesafetyproblemsandregulationsassociatedwithworkingwithradioactivematerialsarenotaddressedinthemethod.Itistheresponsibilityoftheindividualuserstoestablishandensureadherencethepropersafety,health,monitoringandallregulatorypracticesassociatedwiththeuseofradioactivecompounds.ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:Z13
【国际标准分类号】:13_060_50
【页数】:
【正文语种】:英语

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上一篇: ANSI/ASTM D6056-2001 用传输电子显微镜测定工作环境空气中单晶陶瓷须晶浓度的方法
下一篇: ANSI/ASTM D6691-2001 利用规定的微生物同生群测定海洋环境中塑料需氧生物降解的方法

【英文标准名称】:Ergonomics-Dangersignalsforpublicandworkareas-Auditorydangersignals
【原文标准名称】:人类工效学.公共和工作场所险情信号.险情听觉信号
【标准号】:ISO7731-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC159
【标准类型】:()
【标准水平】:()
【中文主题词】:安全装置;人类工效学;信号;术语;设计;定义;试验;声信号;规范(验收);安全要求;安全工程;危险信号;公共的;紧急信号;报警信号;声学
【英文主题词】:Acousticsignals;Acoustics;Alarmsignals;Audibility;Auditorythreshold;Dangersignals;Definitions;Design;Duration;Earprotectors;Emergencysignals;Ergonomics;Frequencies;Insulations;Listeningtests;Machines;Measurement;Occupationalsafety;Presentations;Public;Safety;Safetydevices;Safetyengineering;Safetyrequirements;Signaltransmission;Signals;Sound;Soundinsulation;Soundpressure;Soundpressurelevel;Soundsources;Specification(approval);Terms;Testing;Tests;Timehistory;Warnings;Workplaces
【摘要】:ThisInternationalStandardspecifiesthephysicalprinciplesofdesign,ergonomicrequirementsandthecorrespondingtestmethodsfordangersignalsforpublicandworkareasinthesignalreceptionareaandgivesguidelinesforthedesignofthesignals.Itmayalsobeappliedtootherappropriatesituations.Therelevancegiveninthedefinitionsastothedifferencebetweenanauditoryemergencysignal,auditoryemergencyevacuationsignalandanauditorywarningsignalshouldbenoted.TheemergencyevacuationsignaliscoveredinISO8201.ThisInternationalStandarddoesnotapplytoverbaldangerwarnings(e.g.shouts,loudspeakerannouncements).ISO9921coversverbaldangersignals.SpecialregulationssuchasthoseforapublicdisasterandpublictransportarenotaffectedbythisinternationalStandard.
【中国标准分类号】:A25
【国际标准分类号】:13_180;13_320
【页数】:17P;A4
【正文语种】:英语

Product Code:SAE AMS5640
Title:Steel, Corrosion Resistant, Bars, Wire, and Forgings 18cr 9ni Free Machining
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers three types of a free-machining, corrosion-resistant steel in the form of bars, wire, forgings, and forging stock.