石油炼制与化工 ›› 2017, Vol. 48 ›› Issue (3): 94-98.

• 油品与添加剂 • 上一篇    下一篇

溶出伏安法检测油品中元素硫的方法

朱新宇,王小伟,章群丹,田松柏   

  1. 中国石化石油化工科学研究院
  • 收稿日期:2016-08-09 修回日期:2016-10-27 出版日期:2017-03-12 发布日期:2017-02-24
  • 通讯作者: 朱新宇 E-mail:zhuxinyu.ripp@sinopec.com
  • 基金资助:
     

DETERMINATION OF ELEMENT SULFUR IN PETROLEUM PRODUCTS BY STRIPPING VOLTAMMETRY

    

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  • Received:2016-08-09 Revised:2016-10-27 Online:2017-03-12 Published:2017-02-24
  • Supported by:
     

摘要: 元素硫的危害很大,不仅能毒害催化剂,同时也对炼油装置和储运设施造成腐蚀,严重影响企业的安全和效益。为了实现对元素硫的快速准确测定,建立了一种基于差分脉冲溶出伏安法检测油品中元素硫的分析方法,考察了富集时间、富集电位、脉冲振幅和扫描速率对实验结果的影响,并对14种样品进行分析,结果表明,所建方法准确可靠,加标回收率为98.0%~102.0%,可以用于汽油、喷气燃料和柴油中元素硫含量的测定。

关键词: 溶出伏安, 元素硫, 油品检测

Abstract: Element sulfur has great damage to refinery equipments and storage facilities. A method was developed for the determination of element sulfur in petroleum products based on differential pulse stripping voltammerty. The effects of the deposition potential, deposition time, pulse amplitude and scanning rate on the experimental results were examined. The results demonstrate that this method is accurate and reliable, and the recovery rate is 98.0%-103.0%. Fourteen samples were analyzed by the developed method. It is proved that the method can determine the elemental sulfur in gasoline, kerosene and diesel.

Key words: stripping voltammetry, elemental sulfur, oil testing

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