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Determination of Water-soluble Chlorides of Electrolytic Capacitor Paper by Ion Chromatography
Received:September 04, 2023  
DOI：10.11980/j.issn.0254-508X.2024.02.017
Key Words:electrolytic capacitor paper  water-soluble chloride  ion chromatography  extraction method
Author NameAffiliationPostcode
LIANG Xiaodan Zhuzhou Times New Material Technology Co.， Ltd.， Zhuzhou， Hu’nan Province， 412007
National Inspection Center of Polymeric Materials and Products for Railways， Zhuzhou， Hu’nan Province， 412007 		412007
YANG Liu Zhuzhou Times New Material Technology Co.， Ltd.， Zhuzhou， Hu’nan Province， 412007
National Inspection Center of Polymeric Materials and Products for Railways， Zhuzhou， Hu’nan Province， 412007 		412007
NI Zizhen Zhuzhou Times New Material Technology Co.， Ltd.， Zhuzhou， Hu’nan Province， 412007
National Inspection Center of Polymeric Materials and Products for Railways， Zhuzhou， Hu’nan Province， 412007 		412007
YAO Zhiping Zhuzhou Times New Material Technology Co.， Ltd.， Zhuzhou， Hu’nan Province， 412007
National Inspection Center of Polymeric Materials and Products for Railways， Zhuzhou， Hu’nan Province， 412007 		412007
LIU Guojun Zhuzhou Times New Material Technology Co.， Ltd.， Zhuzhou， Hu’nan Province， 412007
National Inspection Center of Polymeric Materials and Products for Railways， Zhuzhou， Hu’nan Province， 412007 		412007
WANG Jin* Zhuzhou Times New Material Technology Co.， Ltd.， Zhuzhou， Hu’nan Province， 412007
National Inspection Center of Polymeric Materials and Products for Railways， Zhuzhou， Hu’nan Province， 412007 		412007
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Abstract:The electrolytic capacitor paper was pretreated by the extraction method， and then the water-soluble chloride was determined by ion chromatography. The results showed that the mass concentration of chloride ion had a linear relationship with the peak area in the range of 0.02~1.00 μg/mL， and the correlation coefficient was greater than 0.999. The sample pretreatment method was optimized. The detection limits of method were 0.06 mg/kg， the relative standard deviations were 7.04% （n=6）， the recoveries were 97.62%~101.95%， and the relative standard deviations were 2.33%. The method had low detection limit， the sample pretreatment was simple and environmentally friendly. The results were satisfactory for practical sample analysis， and it was suitable for the determination of water soluble chloride in electrolytic capacitor paper.
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