GB/T 17415.2-1998 钽矿石、铌矿石化学分析方法 硅胶富集分离-硫氰酸盐萃取光度法测定铌量
时间:2024-05-19 08:39:19 来源: 标准资料网 作者：标准资料网 阅读：9276
基本信息
| 标准名称： | 钽矿石、铌矿石化学分析方法 硅胶富集分离-硫氰酸盐萃取光度法测定铌量 |
| 英文名称： | Methods for chemical analysis of Tantalum and Niobium ores-Determination of Niobium content-Preconcentration and separation with silica gel-Thiocyanate extraction photometric method |
| 中标分类： |
矿业 >>
有色金属矿 >>
稀有金属矿 |
| ICS分类： |
采矿和矿产品 >>
金属矿
|
| 替代情况： | 被GB/T 17415.2-2010代替 |
| 发布部门： | 国家质量技术监督局 |
| 发布日期： | 1998-06-17 |
| 实施日期： | 1999-01-01 |
| 首发日期： | 1998-06-17 |
| 作废日期： | 2011-02-01 |
| 主管部门： | 国土资源部 |
| 提出单位： | 中华人民共和国地质矿产部 |
| 归口单位： | 地质矿产部沈阳综合岩矿测试中心 |
| 起草单位： | 地矿部成都综合岩矿测试中心 |
| 起草人： | 陈万平 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1900-01-01 |
| 页数： | 4页 |
适用范围
本标准规定了担、妮矿石中妮含量的测定方法。
本标准适用于担、妮矿石.也适用于铿、铆、艳矿石中妮含量的测定。测定范围::10X10-５1.0×10-２五氧化二铌。
前言
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目录
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引用标准
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所属分类： 矿业 有色金属矿 稀有金属矿 采矿和矿产品 金属矿
【英文标准名称】:StandardTestMethodforSnaggingResistanceofFabrics(BeanBag)
【原文标准名称】:织物耐钩私性的标准试验方法(豆袋试验法)
【标准号】:ASTMD5362-2003(2008)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D13.59
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:knittedfabrics;snaggingresistance;wovenfabric
【摘要】:AcceptanceTesting8212;Thistestmethodmaybeusedforacceptancetestingofcommercialshipmentsoffabricsbecausetheprecisionisacceptable(see15.1).Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogeneousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumbertoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thistestmethodmaybeusedforqualitycontroltestingoffabricsduringmanufacturingandproductcomparisonsofdifferentfabricsbymanufacturers,retailers,andusers.Thistestmethodmayalsobeusedbyresearcherstoexaminetheeffectofnewfibers,yarns,fabricconstructions,andfinishesonthesnaggingresistanceoffabrics.Thistestmethodmaybeusedtotestthesnaggingresistanceofmostapparelandhomefurnishingsfabrics.However,adifferenttestmethod(see5.3.1)maybeneededfordifferenttypesoffabricsanddifferentend-uses(suchastowels,swimwear,slacks,andupholstery).Somefabricswhichmaynotbesuitableforthistestmethodaredescribedin1.2.ManyopenconstructionfabricscanbetestedforsnaggingresistanceusingAATCCTestMethod65.ManyheavyorstifffabricscanbetestedforsnaggingresistanceusingTestMethodD3939.ThesnaggingresistanceofmanypilefloorcoveringscanbetestedbyTestMethodD1335.Becausefabricsnaggingcanbeaffectedbylaunderingordrycleaning,itmaybeadvisabletotestthesnaggingresistanceofafabricbeforeandafterlaunderingordrycleaning.Thesnaggingresistanceofaspecificfabricvarieswithindividualwearersandgeneralconditionsofuse.Therefore,itcanbeexpectedthatgarmentsofthesamefabricwillshowafairlywidesnaggingresistancespectrumafterwearandmuchgreatervariationinwearthaninreplicatefabricspecimenssubjectedtocontrolledlaboratorytests.Thisfactorshouldbeconsideredwhenadoptinglevelsofacceptabilityforanyspecificationthatincludessnaggingresistance.Snagsobservedinworngarmentsvaryappreciablyinnumberandappearance.Theappearanceofasnagdependsparticularlyon(1)thedegreeofcolorcontrastbetweenthesnagandthesurroundingareaofthefabric,or,(2)thepresenceoflongdistortionsorlongprotrusions.Theseconditionsarenotevaluatedwhensnaggingisratedsolelyonthenumberofsnags.SeeSection3foradescriptionofterminologysuchascolorcontrast,distortion,andprotrusionSeeFigs.1-3.Becausetheoverallacceptabilityofaspecificfabricisdependentonboththecharacteristicsofthesnagsandotherfactorsaffectingfabricappearance,itisrecommendedthatfabricstestedinthelaboratorybeevaluatedwithregardtothedefectswhichmaybevisuallyobservedandnotratedsolelyonthenumberofsnagsdeveloped.Aseriesofvisualratingstandards(see6.7)maybesetuptoprovideabasisfortheratings.Thevisualratingstandardsaremostadvantageouswhenthetestedlaboratoryspecimenscorrelatecloselyinappearancewithfabricsfromaweartest;forexamplewhentestedlaboratoryspecimensandfabricsfromaweartestshowsimilarcolorcontrasts.Intheprecedingexample,aseriesoffabrics.......
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Waterpipelines;valveboxfortappingvalves;DVGWcodeofpractice
【原文标准名称】:水管.放水阀门室.DVGW实施规程
【标准号】:DIN4057-1992
【标准状态】:现行
【国别】:德国
【发布日期】:1992-02
【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】:车行道(公路);水;尺寸;放水阀;砝码;规范(审批);试验;人行道;道路下检查箱;阀门;帽(闭塞物);管道;公差;输水管道;作标记;道路建筑;给水
【英文主题词】:water;tappingvalves;weights;surfaceboxes;carriageways;dimensions;tolerances(measurement);footways;caps(closures);waterpipelines;watersupply;marking;pipelines;valves;roadconstruction;testing;spe
【摘要】:Thestandardlaysdownthedimensionsofvalveboxesfortappingvalvesinwaterpipelines.
【中国标准分类号】:Q81
【国际标准分类号】:4774
【页数】:3P;A4
【正文语种】:德语