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煤油-羧甲基纤维素-水体系中微量苯甲酸的气相色谱测定
Authors
曹殿芳
骆元章
Publication date
1 January 1983
Publisher
Abstract
为了考察萃取设备“转盘塔”的效率,选用了煤油-苯甲酸-羧甲基纤维素-水体系。苯甲酸为示踪物质。运转时苯甲酸在平衡的两相中有一定的分配,工程要求快速、准确测定抽取样中煤油相和水相中的苯甲酸。苯甲酸的常规分析采用容量法,但滴定终点难于正确掌握,测定含量范围也有限。曾报导了用聚乙二醇己二酸酯和聚二乙二醇丁二酸酯为固定液的色谱
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Last time updated on 09/11/2016