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【英文标准名称】:Leather-Chemicaldeterminationofchromicoxidecontent-Part1:Quantificationbytitration(ISO5398-1:2007)EnglishversionofDINENISO5398-1:2007-10
【原文标准名称】:皮革.氧化铬含量的化学测定.第1部分:用滴定法量化
【标准号】:DINENISO5398-1-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和测试;化学性质;氧化铬;铬;氧化铬含量;含量;定义;测定;含量测定;碘滴定法;皮革;皮革制品;材料测试;方法;抽样方法;样品;试样;测试;滴定法
【英文主题词】:Chemicalanalysisandtesting;Chemicalproperties;Chromeoxides;Chromium;Chromiumoxidecontent;Chromiumoxidecontents;Content;Definition;Definitions;Determination;Determinationofcontent;Iodometry;Leather;Leatherproducts;Materialstesting;Methods;Samplingmethods;Specimens;Testspecimens;Testing;Titration
【摘要】:ThispartofISO5398describesamethodforthedeterminationofchromiuminaqueoussolutionobtainedfromleather.Thisisananalysisfortotalchromiuminleather;itisnotcompoundspecificorspecifictoitsoxidationstate.Thismethoddescribesthedeteminationofchromebyiodometrictirationandistobeapplicabletochromium-tannedleatherswhichareexpectedtohavechromicoxidecontentsinexcessof0,3%.Twodifferentmethodsaredescribedasalternativesforobtainingchromiuninasuitablesolution.Itisappropriatetouseeithermethod.
【中国标准分类号】:Y46
【国际标准分类号】:59_140_30
【页数】:11P.;A4
【正文语种】:英语


Product Code:SAE AIR951
Title:Spark Energy Measurement, Alternative Method
Issuing Committee:E-30 Propulsion Ignition Systems Committee
Scope: The subject of spark energy measurement for the user of gas turbine engine ignition systems has been cautiously approached in that no one method has been developed that is readily usable outside the system designer's laboratory. Also, there is a lack of agreement as to the most desirable and informative method or methods to be used in establishing the system integrity except that it will effect an engine start when called upon. Periodic inspections during the used life of the ignition system crudely consist of (a) visual evidence of a spark and (b) sound level of the spark resounding within the caverns of its operating environment. Both of these depend primarily on human judgment which varies considerably with the individual. This document is prepared in an effort to acquaint and summarize, for the user, the available methods, over and above those stipulated for overhaul agencies, for possible refinement and use as periodic inspection media.