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GB/T 14353.8-1993 铜矿石、铅矿石和锌矿石化学分析方法 氢化物无色散原子荧光光度法测定铋量

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基本信息
标准名称:铜矿石、铅矿石和锌矿石化学分析方法 氢化物无色散原子荧光光度法测定铋量
英文名称:Methods for chemical analysis of copper ores lead ores and zinc ores. Determination of bismuth content. Hydride generationatomic fluorescence spectrometric method
中标分类: 矿业 >> 有色金属矿 >> 重金属矿
ICS分类: 采矿和矿产品 >> 金属矿
替代情况:被GB/T 14353.8-2010代替
发布部门:国家技术监督局
发布日期:1993-05-12
实施日期:1994-02-01
首发日期:1993-05-12
作废日期:2011-02-01
主管部门:国土资源部
归口单位:全国国土资源标准化技术委员会
起草单位:地矿部南京综合岩矿测试中心
出版社:中国标准出版社
出版日期:1994-02-01
页数:4页
适用范围

本标准规定了铜矿石、铅矿石、锌矿石中铋含量的测定方法。
本标准适用于铜矿石、铅矿石、锌矿石中铋含量的测定,测定范围:1~200μg/g。

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所属分类: 矿业 有色金属矿 重金属矿 采矿和矿产品 金属矿
【英文标准名称】:StandardTestMethodsforDeposit-FormingImpuritiesinSteam
【原文标准名称】:蒸汽中沉积杂质的标准试验方法
【标准号】:ASTMD2186-2005(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:deposit-forming;electricalconductivity;evaporate;gravimetric;impurities;Larsen-Lane;sodiumtracer;steam;Conductanceandconductivity(electrical)--water;Dissolvedelements(ofwater);Evaporators/evaporation;Generatormaterials--turbine;
【摘要】:Limitingtheconcentrationofdeposit-formingimpuritiesinsteamisofsignificancetoprotectbothsteamgeneratorsandsteamturbinesfromdamageordegradationofperformance,orboth.Steamenteringsuperheatersandreheatersofsteamgeneratorsalwayscontainssomeimpurities.Iftheconcentrationofimpuritiesissufficientlylow,theimpuritiesaredissolvedinsuperheatedsteamandarecarriedoutofthesteamgenerator.However,ifthesteamcontainsasufficientamountofanysubstancetoexceeditssolubilitylimitinsteam,thesubstanceislikelytoformadepositontheheat-transfersurface.Becauseheattransferinsuperheatersandreheatersinfossil-fueledsteamgeneratorsiscontrolledprincipallybythelowheat-transfercoefficientonthegasside,theformationofsteam-sidedepositswillhavelittleeffectontheoverallheat-transferrate.However,steam-sidedepositswillincreasetheoperatingtemperatureoftheheat-transfersurface.Suchtemperatureincreasescanleadtoswellingandultimatelytoruptureofthetubing.Also,aggressivematerialscanconcentrateundersoliddepositsofporousmaterials,suchasmagnetite(Fe3O4),andcancauseseriouscorrosionofthetubing.Assteamflowsthroughturbines,itstemperatureandpressuredecreaserapidly.Becausetheabilityofsteamtodissolveimpuritiesdecreaseswithdecreasingtemperatureandpressure,impuritiesinsteammayexceedtheirsolubilitylimitandformdepositsontheturbine.Suchdepositsreducesteamflowarea,particularlyinthehigh-pressureportionoftheturbinewhereflowpassagesaresmall,andtheroughnessofdepositsandtheireffectonbladecontoursresultinlossesofturbineefficiency.Alloftheseeffectsleadtoreductionoftheplantmaximumcapacity,whichappreciablyreducesthefinancialreturnonthecapitalinvestmentinthepowerplant.Furthermore,aggressivematerials,suchassodiumhydroxide(NaOH)andsodiumchloride(NaCl),maycondenseanddepositonturbinesurfaces.Suchdepositsoccasionallycontributetofailureduetocrackingofhighlystressedturbinebladesandrotors.Repairsandoutagesareextremelycostly.Bymonitoringtheconcentrationofdeposit-formingimpuritiesinsteam,apowerplantoperatorcantakestepsnecessarytolimittheimpuritiestotolerableconcentrationsandthusminimizeoreliminatelossesduetoexcessivedeposits.1.1Thesetestmethodscoverthedeterminationoftheamountofdeposit-formingimpuritiesinsteam.Determinationsaremadeoncondensedsteamsamplesinalltestmethods.TestMethodsA,B,andCgiveameasureoftheamountoftotaldeposit-formingmaterialpresent;TestMethodDdealswithspecialconstituentsthatmaybepresent.Specialprecautionsandequipment,calculationprocedures,andrangesofapplicabilityaredescribed.Thefollowingtestmethodsareincluded:
Sections
TestMethodA(GravimetricorEvaporative)
6to12
TestMethodB(ElectricalConductivity)
13to19
TestMethodC(SodiumTracer)
20to26
TestMethodD(SilicaandMetals)
27to30
【英文标准名称】:Animalandvegetablefatsandoils-Sampling(ISO5555:1991);GermanversionENISO5555:1995
【原文标准名称】:动植物脂肪和油.取样
【标准号】:DINENISO5555-1995
【标准状态】:作废
【国别】:德国
【发布日期】:1995-07
【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】:动物油;农业;油;农产品;食品;脂肪;作标记;动物脂肪;植物油;抽样方法;植物脂肪;包装件;定义;仪器;取样
【英文主题词】:vegetablefats;marking;animalfats;oils;agriculture;sampling;instruments;fats;foodproducts;animaloils;packages;agriculturalproducts;definitions;samplingmethods;vegetableoils
【摘要】:
【中国标准分类号】:X14
【国际标准分类号】:67_200_10
【页数】:17P;A4
【正文语种】:德语