ImageVerifierCode 换一换
格式:PDF , 页数:3 ,大小:76.19KB ,
资源ID:179484      下载积分:12 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。 如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【https://www.wnwk.com/docdown/179484.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: QQ登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM_D_3340_-_07.pdf)为本站会员(益****师)主动上传,蜗牛文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知蜗牛文库(发送邮件至admin@wnwk.com或直接QQ联系客服),我们立即给予删除!

ASTM_D_3340_-_07.pdf

1、Designation:D3340 07Standard Test Method forLithium and Sodium in Lubricating Greases by FlamePhotometer1This standard is issued under the fixed designation D3340;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revis

2、ion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers determination of the lithium andsodium content of lubricating greases by means of a flamephotometer.1.2 A mu

3、lti-element analysis method for greases,whichincludes the measurement of lithium and sodium concentra-tions using inductively couple plasma-atomic emission spec-troscopy(ICP-AES),is available in Test Method D7303.1.3 The values stated in SI units are to be regarded asstandard.The values given in par

4、entheses are for informationonly.The preferred units are mass%.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-b

5、ility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6792 Practice for Quality System i

6、n Petroleum Productsand Lubricants Testing LaboratoriesD7303 Test Method for Determination of Metals in Lubri-cating Greases by Inductively Coupled Plasma AtomicEmission Spectrometry3.Summary of Test Method3.1 The sulfated ash of the grease is extracted with waterand the lithium and sodium content o

7、f the resulting solution isdetermined by means of a suitable flame photometer.4.Significance and Use4.1 Lubricating greases can contain the lithium soap ofhydroxy stearic acid or the sodium soap of various fatty acidsas thickeners.The determination of total lithium or totalsodium is a measure of the

8、 amount of thickener in the grease.5.Apparatus5.1 Flame Photometer,suitably equipped to determinelithium and sodium over a range from 0 to 15 mg/Llithium andfrom 0 to 5 mg/L sodium.6.Reagents6.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is inte

9、nded thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.3Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use witho

10、ut lessening theaccuracy of the determination.6.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water as definedby Type II of Specification D1193.6.3 Lithium Sulfate,Stock Solution1.188 g of lithiumsulfate dried to constant weight at 180C(356F),is d

11、issolvedin water and made up to 1 L.This will contain 150 mg/Llithium.6.4 Sodium Sulfate,Stock Solution0.1544 g of sodiumsulfate,dried to constant weight at 105C(221F),is dissolvedin water and made up to 1 L.This will contain 50 mg/Lsodium.6.5 Sulfuric Acid(rel.den.1.84)Concentrated sulfuricacid(H2S

12、O4).7.Sampling7.1 A homogeneous sample shall be obtained to ensurequantitative analytical results.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.03 on Elemental Analysis.Current edition approve

13、d Dec.1,2007.Published January 2008.Originallyapproved in 1974.Last previous edition approved in 2003 as D334098(2003).DOI:10.1520/D3340-07.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume in

14、formation,refer to the standards Document Summary page onthe ASTM website.3Reagent Chemicals,American Chemical Society Specifications,AmericanChemical Society,Washington,DC.For Suggestions on the testing of reagents notlisted by the American Chemical Society,see Annual Standards for LaboratoryChemic

15、als,BDH Ltd.,Poole,Dorset,U.K.,and the United States Pharmacopeiaand National Formulary,U.S.Pharmacopeial Convention,Inc.(USPC),Rockville,MD.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-29

16、59,United States.8.Procedure8.1 Weigh to the nearest 1 mg approximately 1 g of thegrease into a platinum dish or crucible.Heat the dish until thesample can be ignited with a flame.Maintain at such atemperature that the sample burns at a uniform and moderaterate,leaving only ash and carbon when the burning ceases.8.2 Cool the dish and completely moisten the residue by thedropwise addition of concentrated sulfuric acid.Heat the dishat a low temperature,taking care to avoid spattering of thecontent

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2