Method for analyzing content of trace oxalate in post-treatment process feed liquid

The invention provides a method for analyzing the content of trace oxalate in a post-treatment process feed liquid. The analysis method comprises the following steps: S1, preparing an oxalate series standard solution, mixing the oxalate series standard solution with an acidic ethanol solution, carry...

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Bibliographische Detailangaben
Hauptverfasser:	WANG BENJUN, WANG LIN, JIA YUFANG, WU YANXIN, JANG SANG-RO, LI JIHUA, XIA ZHANGUO, ZHANG YADONG, YI HONG, LIU XIAOXIA, ZHANG HAIMING, ZENG QIAOQIAO, ZHENG WENHUI, LIU LU, SHI XIUGAO, HU XUEMING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The invention provides a method for analyzing the content of trace oxalate in a post-treatment process feed liquid. The analysis method comprises the following steps: S1, preparing an oxalate series standard solution, mixing the oxalate series standard solution with an acidic ethanol solution, carrying out an esterification reaction, extracting a reaction solution obtained after the esterification reaction, and carrying out gas chromatographic analysis on an extract obtained after extraction to obtain a standard curve; and S2, mixing the post-treatment process feed liquid with an acidic ethanol solution, carrying out an esterification reaction, extracting the reaction liquid after the esterification reaction, carrying out gas chromatographic analysis on the extracted extract liquid, and obtaining the content of trace oxalate in the post-treatment process feed liquid according to a gas chromatographic analysis result and the standard curve. The analysis method has the advantages of short analysis time, low sam