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Determination of Sodium Carboxymethyl Cellulose in Papers by Spectrophotometric
  
DOI：10.11980/j.issn.0254-508X.2011.04.009
Key Words:paper  soduim carboxymethl cellulose  spectrophotometry
Author NameAffiliation
徐 嵘1 1.深圳出入境检验检疫局，广东深圳，518045 
王成云1 1.深圳出入境检验检疫局，广东深圳，518045 
顾浩飞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 
谢堂堂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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Abstract:A spectrophotometric method was established to determine the content of sodium carboxymethyl cellulose (CMC-Na) in paper. CMC-Na in paper was extracted by hot water, then the extracted solution was mixed with concentrated sulphuric acid and phenol, thus an orange solution was obtained. The absorbance of this orange solution was measured at 477nm. This method had quite a good precision and a rather high recovery. The detection limit was 0.2%.
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