ISO 6588-2-2005 纸、纸板和纸浆.水提物pH值的测定.第2部分:热萃取

作者:标准资料网 时间:2024-05-19 02:17:54  浏览:8669   来源:标准资料网

【英文标准名称】:Paper,boardandpulps-DeterminationofpHofaqueousextracts-Part2:Hotextraction
【原文标准名称】:纸、纸板和纸浆.水提物pH值的测定.第2部分:热萃取
【标准号】:ISO6588-2-2005
【标准状态】:作废
【国别】:国际
【发布日期】:2005-05
【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/TC6
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;纸浆;纸浆;测定;pH值;热萃取;纸板;纸;萃取
【英文主题词】:Board(paper);Determination;Extraction;Hotextraction;Paper;Paperpulp;pH;Pulp;Testing;Tests
【摘要】:ThispartofISO6588specifiesamethodforthedeterminationofthepH-valuedefinedbytheelectrolytesextractablebyhotwaterfromasampleofpaper,boardorpulp.ThispartofISO6588isapplicabletoallkindsofpaper,boardandpulp.Asthequantityofextractableionicmaterialapproacheszero,asinthecaseofhighlypurifiedpulps,theprecisionofthemethodbecomespoorbecauseofthedifficultiesencounteredinmakingpHmeasurementsonwatercontaininglittleelectrolyticmaterial.SincetheextractioninthispartofISO6588isperformedwithdistilledordeionisedwater,thepH-valuemeasuredwillsometimesbedifferent(e.g.fullybleachedpulp)fromthepH-valuemeasuredundermillprocessconditionsinwhichvarioustypesofprocesswaters,e.g.chemicallytreatedriverwatercontainingelectrolytes,areused.ISO6588-1differsfromthispartofISO6588onlyasregardstheextractionconditions.Nogeneralguidancecanbegivenastowhichofthetwoprocedures(hotorcold)isbestsuitedinaparticularsituation.Forcellulosicpapersusedforelectricalpurposes,themethodusedshouldbethatgiveninIEC60554-2(see[4]intheBibliography).
【中国标准分类号】:Y30
【国际标准分类号】:85_040;85_060
【页数】:6P.;A4
【正文语种】:英语