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