期刊文献+

柱前衍生-反相高效液相色谱法测定乳液聚合物中微量甲醛 预览

RP-HPLC Determination of Trace Amount of Formaldehyde in Emulsion Polymers with Precolume Derivatization
在线阅读 下载PDF
收藏 分享 导出
摘要 运用几种破乳方法的组合和随后的水解作用提取乳液聚合物中甲醛。分取部分提取液加入Nash试剂在50℃水浴中加热40 min使甲醛衍生化,所得含有甲醛衍生物的溶液用作高效液相色谱分析。在所选定的色谱条件下,所测得的峰面积值与甲醛的质量浓度在0.75-7.5 mg·L^-1范围内呈线性关系。其检出限(3S/N)为3.0μg·L^-1。应用所提出的方法分析了两件实样,并以此实样为基体,加3个浓度水平的甲醛标准溶液(在15-1 500 mg·kg^-1范围内)作回收试验,测得回收率在92.0%-104.7%之间。为了检测方法的精密度,取一定浓度的甲醛标准溶液,在2.5 h时间段按试验方法测定7次,其测定值的相对标准偏差为1.96%。 Free formaldehyde was extracted from the emulsion polymer sample by demulsification and hydrolysis in succession.An aliquot of the supernatant extract was taken,mixed with the derivatizing reagent(i.e,the Nash reagent) and derivatized for 40 min at 50 ℃ in a water bath.The solution containing the derivative of formaldehyde was used for HPLC analysis.Under the specified chromatographic conditions,linear relationship between values of peak area and mass concentration of formaldehyde was obtained in the range of 0.75 mg·L^-1 to 7.5 mg·L^-1.Detection limit(3S/N) of the method was found to be 3.0 μg·L^-1.The proposed method was used in the analysis of 2 substantial samples,on the base of which recovery was tested by adding standard formaldehyde solution at 3 concentration levels(from 15-1 500 mg·kg-1).Results of recovery found were in the range from 92.0% to 104.7%.Precision was tested by taking definite amount of standard formaldehyde solutions and making 7 determinations within a time-period of 2.5 h,value of RSD found was 1.96%.
作者 陈红梅 CHEN Hong-mei(Zhejiang Transfar Co.Ltd.,Hangzhou 311215,China)
出处 《理化检验:化学分册》 CAS CSCD 北大核心 2010年第9期1049-1051,共3页 Physical Testing and Chemical Analysis Part B:Chemical Analgsis
关键词 反相高效液相色谱法 甲醛 柱前衍生化 乳液聚合物 RP-HPLC Formaldehyde Precolumn derivatization Emulsion polymers
作者简介 陈红梅(1981-),女,山东淄博人,硕士,主要从事纺织、皮革等专用化学品的研究、检测以及标准化工作。
  • 相关文献

参考文献9

二级参考文献25

共引文献61

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈