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分光光度法测定纸品中淀粉含量
Quantitative Determination of Starch in Paper by Spectrophotometer
  
DOI:10.11980/j.issn.0254-508X.2012.02.005
关键词:  纸品  淀粉含量测定  分光光度法
Key Words:paper  starch  spetrophotometry
基金项目:
作者单位
徐 嵘1 1.深圳出入境检验检疫局,广东深圳,518045 
谢堂堂1 1.深圳出入境检验检疫局,广东深圳,518045 
陈桂强1 1.深圳出入境检验检疫局,广东深圳,518045 
章雅玲1 1.深圳出入境检验检疫局,广东深圳,518045 
周振宇2 2.浙江凯恩特种材料股份有限公司,浙江遂昌,323300 
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摘要:对纸品(含淀粉)进行热水抽提,利用淀粉遇到碘生成蓝色络合物的特性,测定其在最大吸收波长处的吸光度,从而建立了一种快速测定纸品中淀粉含量的方法。该方法精密度好,工作曲线相关性好,检出限0.02%。
Abstract:A spectrophotometric method was established to determine the content of starch in paper. Starch was extracted by hot water, then the extract was reacted with iodine to form a blue-green colored complex,the absorbance of solution was measured at peak value of wavelength. This method has a good precision and rather high recovery. The detection limit is 0.02%.
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