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| 有机物中微量氯的测定 |
| Determination of Microamount Chlorine in Non-halogenated Organics |
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| DOI：10.3969/j.issn.1671-5322.2004.01.015 |
| 中文关键词: 对苯醌 微量氯 测定 氧瓶燃烧法 |
| 英文关键词: p-Benzoquinone Microamount chlorine Determination Oxygen-flask combustion method |
| 基金项目: |
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| 中文摘要: |
| 介绍了一种测定非卤化有机物中微量氯的方法,即以碱性H2O2溶液为吸收液,用HNO3溶液调节pH为7～9.5,以K2CrO4溶液为指示剂,用AgNO3标准溶液滴定. 回收率在97%～101%,相对标准偏差为1.8%～4.7%. |
| 英文摘要: |
| A method for determination of microamount chlorine in non-halogenated organics is introduced. To do this, alkaline H 2O 2 solution is chosen as absorbing liquid, and the pH of the solution is adjusted to 7～9.5 with HNO 3 solution. Using K 2CrO 4 solution as indicator, the absorbing liquid is then titrated with AgNO 3 standard solution. The recovery efficiency of this method is in the range of 97% ～101%, and the relative standard deviation is about 1.8%～4.7%. |
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