ImageVerifierCode 换一换
格式:PDF , 页数:9 ,大小:653.48KB ,
资源ID:182959      下载积分:9 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/182959.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_2600_-_87_scan.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_2600_-_87_scan.pdf

1、ASTM B2600 87 W 0757510 00262LI6 -73-C S 5 An American National Standard AMERICAN SOCIETY FOR TESTING AND MATERIALS(Tb Designation:D 2600-87 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed In the current combined index,will appear in

2、the next edition.Designation:262/85 Standard Test Method for Aromatic Traces in Light Saturated Hydrocarbons By Gas Chromatography This standard is issued under the fixed designation D 2600,the number immediately following the designation indicates the year of original adoption or,in the case of rev

3、ision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(1 indicates an editorial change since the last revision or reapproval.This test method was adopted as a joint ASTM-IP Standard in 1971.1.Scope 1.1 This test method covers the determina

4、tion of benzene,toluene,and C8 aromatics in light saturated hydrocarbon samples.The test method is limited by aromatic selectivity of the stationary liquid to samples containing n-decane as the highest boiling compound.NOTE 1-Some of the C,o naphthenes have boiling points below that of n-decane.Such

5、 compounds may be eluted after n-decane on the columns described i n this method and may cause interference with the determination of benzene.1.2 This test method covers the concentration range from 0.005 to 1.00 volume percent of each C6 to C8 aromatic carbon number group.1.3 Results are reported t

6、o two significant figures.1.4 This standard may involve hazardous materials,oper-ations,and equipment.This standard does not purport to address all o f the safety problems associated with its use.It is the responsibility o f the user o f this standard to establish appropriate safety and health pract

7、ices and determine the applicability o f regulatory limitations prior to use.2.Referenced Documents 2.I ASTM Standards:D 2267 Test Method for Aromatics in Light Naphthas,Reformates and Gasolines by Gas Chromatography2 E 260 Practice for Packed Column Gas Chromatography3 3.Summary of Test Method 3.1

8、The sample is introduced into a gas chromatographic column containing a strongly polar liquid phase.The polar phase has very little affinity for saturated and olefinic hydrocarbons,while exhibiting a pronounced selectivity for aromatics.This selectivity results in the elution of all saturated and ol

9、efinic hydrocarbons in the products de-scribed above prior to the elution of benzene.Either a thermal conductivity or flame ionization detector may be used.Calibration is performed by using synthetic blends of I This test method is under the jurisdiction of ASTM Committee D-2 on Petroleum Products a

10、nd Lubricants and is the direct responsibility of Subcom-mittee W2.04 on Hydrocarbon Analysis.Currenf edition approved Oct.30,1987.Published December 1987.Originally published as D 2600-67.Last previous edition D 2600-82.*Anniial Book ofASTMStandards,Vol 05.02.Annual Book ofASTMStandards,Vol 14.01.t

11、he aromatic compounds charged at the same constant volume as is used to analyze the sample.n-Undecane or n-dodecane is used as an internal standard.NOTE 2-Reference should be made to Practice E 260.4.Significance and Use 4.1 A knowledge of aromatic traces in light saturated hydrocarbons,such as ligh

12、t naphthas and solvents,is needed to assess purity of solvents and meet product specifications for trace aromatics as may be set by consumers and regulatory agencies.4.2 This test method is also useful as a complementary method to Test Method D 2267.It enables aromatics to be determined in naphthas

13、and aviation gasolines at concentra-tions below the lower limit(1.0 volume%)of Test Method D 2267.5,Apparatus 5.1 Chromatograph-Any chromatographic instrument may be used that has the following performance and characteristics:5.1.1 Sensitivity-The system shall be capable of de-tecting 0.01 volume%of

14、 any aromatic compound of in-terest.For calculation techniques utilizing a recorder,the signal for that concentration shall be at least five chart divisions above the noise level on a O to 100 scale chart.Noise level must be restricted to a maximum of one chart division.When electronic integtation i

15、s employed,the signal for 0.01%concentration must be at least twice the noise level.5.1.2 Sample Inlet System-A sample inlet system that alows a constant volume of liquid sample to be injected.5.1.2.1 If the apparatus is equipped with a sample splitter4 or if a flame ionization detector is used,chec

16、k the linearity of the splitter and detector.To do this prepare two standard samples containing 0.5%and 1.0 volume%each of ben-zene,toluene,and one of the C,aromatics in isooctane,as described in 8.1.Using the same instrument conditions and sample sizes used for the method,inject a constant volume 4For further information on the design and performance of splitters see Analytical Chemistry,ANCHA,Vol 33,No.6,1961,pp.680-4.Natiire,NATUA,London,Vol 198,No.4481,1963,pp.681-2.Open Tabiilar Columns in

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2