ImageVerifierCode 换一换
格式:PDF , 页数:3 ,大小:25.40KB ,
资源ID:746776      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!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   
注意:如需开发票,请勿充值!
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【http://www.mydoc123.com/d-746776.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: 微信登录  

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(FORD FLTM AK 113-01-2001 QUANTITATIVE ANALYSIS OF NITRATE (NO3) IN CLEANERS《清洁剂中的硝酸盐(NO3)含量的定量分析》.pdf)为本站会员(hopesteam270)主动上传,麦多课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,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

FORD FLTM AK 113-01-2001 QUANTITATIVE ANALYSIS OF NITRATE (NO3) IN CLEANERS《清洁剂中的硝酸盐(NO3)含量的定量分析》.pdf

1、 FORD LABORATORY TEST METHOD AK 113-01 Date Action Revisions 2001 01 22 Revised Editorial no technical change A. Cockman 2000 03 23 Revised Editorial no technical change A. Cockman 1991 09 24 Printed copies are uncontrolled Page 1 of 3 Copyright 2001, Ford Global Technologies, Inc. QUANTITATIVE ANAL

2、YSIS OF NITRATE (NO3) IN CLEANERS Application This test method is used to determine the percent nitrate in a cleaner. Apparatus Required Analytical Balance Precision +/- 0.1 mg Distillation Apparatus Distillation Flask Kjeldahl (or boiling type) with ground glass joints. Hot Plate Pipet Titration Ap

3、paratus Graduated Cylinder or Flask Glass Boiling Beads The above apparatus is available from any reputable laboratory equipment supply house. Materials Required Sodium Hydroxide Reagent grade; CAUTION: Corrosive Hydrochloric Acid Concentrated, Reagent grade; CAUTION: Corrosive Devardas Alloy Powder

4、ed. FORD LABORATORY TEST METHOD AK 113-01 Page 2 of 3 Copyright 2001, Ford Global Technologies, Inc. Methyl Red Reagent grade. Methyl Alcohol CAUTION: Low flash point Red Litmus Paper Distilled or Deionized Water 10 ppm max total dissolved solids (ASTM D 1888). Solutions Required Sodium Hydroxide So

5、lution 0.5 N; Refer to FLTM AZ 102-01 Hydrochloric Acid Solution 0.5 N; Refer to FLTM AZ 102-01 Methyl Red Indicator Refer to FLTM AZ 102-01 Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % rel

6、ative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure 1. Take a 1 to 2 g aliquot of the prepared 1 % solution of cleaner into a 1 000 mL distilling flask (Kjeldahl of boiling type) with ground glass joints. 2. Dilute to 300

7、mL with distilled water. 3. Add glass boiling beads. 4. Buret 40 mL of 0.5 N hydrochloric acid into a 500 mL receiving flask. 5. Add a few drops of methyl red indicator. 6. Connect this flask to the condenser making sure that the outlet glass tube from the condenser is immersed in the acid. FORD LAB

8、ORATORY TEST METHOD AK 113-01 Page 3 of 3 Copyright 2001, Ford Global Technologies, Inc. 7. To the sample in the distilling flask, add 50 mL of a 50 % sodium hydroxide solution, free from ammonia, and then 5 g of powdered Devardas Alloy. Note: Make sure the sodium hydroxide does not touch the ground

9、 glass joints. 8. Immediately connect the flask to the water condenser by means of the glass connecting arm with the ground glass joints. Note: All joint connections must be tight. 9. When the initial reaction subsides, swirl the flask for complete solution of the sample and the sodium hydroxide. 10

10、. Heat the distilling flask. 11. Collect approximately 200 mL of the distillate in the receiving flask. 12. Check for completeness of distillation by opening the tube in the distilling flask and determining the neutrality of the vapors with moist red litmus paper. 13. When the distillation is comple

11、te, disconnect the apparatus at the receiving end of the condenser. 14. Shut off the heat. 15. Wash down the condenser and the glass tubing with distilled water into the receiving flask. 16. Titrate the excess acid with standard 0.5 N sodium hydroxide. 17. Calculate the % of NO . 3 % NO 3 = (mL 0.5

12、N HCl - mL 0.5 N NaOH) x 0.031 x 100 Weight of Sample Note: 1. Ammonium-bearing compounds and nitrates will contribute to the total titration found if they are present. 2. Organic-bearing nitrogen compounds will interfere with this determination. 3. If nitrites and/or ammonium are present, the nitra

13、te must be determined by another means. When determined, they must be deducted from the total nitrogen found in order to calculate the % of nitrate nitrogen. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities.

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1