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A Sample Pretreatment Method for Determination of Transition Metals Content in Pulps
  
DOI：10.11980/j.issn.0254-508X.2013.07.001
Key Words:pulp  transition metal element  ash method  digestion method  acidic pretreatment  ICP-OES method
Fund Project:本课题为国家自然科学基金（21076091）资助项目。
Author NameAffiliation
陈海祥1 1华南理工大学制浆造纸工程国家重点实验室，广东广州，510640 
胡会超1 1华南理工大学制浆造纸工程国家重点实验室，广东广州，510640 
曾嘉欣2 2广东出入境检验检疫局检验检疫技术中心，广东广州，510623 
周颖红2 2广东出入境检验检疫局检验检疫技术中心，广东广州，510623 
柴欣生1,3,* 1华南理工大学制浆造纸工程国家重点实验室，广东广州，510640；3国家纸制品质量监督检验中心，广东东莞，523080 
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Abstract:This paper demonstrates a sample pretreatment method for the determination of transition metals content in pulps. The pretreatment process involved: dispersing the pulp in 3 mol/L sulfuric acid solution (the pulp consistency could be adjusted according to the content of transition metals in pulps), and then it was put in a sealed container for 5 hours at 120℃. The present method has a good measurement precision, and the results agreed with those measured by the digestion method in the comparison testing. It also overcame the problem caused by the silicon compounds in the ash method for straw pulp sample testing. It is a simple and practical methed.
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