Measurement of Triglyceride Content of Resin in Masson Pulp by UV Spectral Method <br /> <br />
Journal Title: Science Paper Online - Year 2006, Vol 1, Issue 1
Abstract
Pitch deposite is one of the most troublesome problems for the paper mills in South China that use the Masson pine as a raw material to make paper. The triglyceride has been identified as the main compositions accounting for pitch problem. In order to set down on effective pitch control scheme, the triglyceride content in papermaking process must be measured quantitatively. A method to measure the content of triglyceride in masson wood pulp was developed based on UV spectrophotometer in this work. The UV spectrogram and characteristic peak location of standard glycerol trioleate were discussed as well as the effect of measuring time to absorbency. The results showed that at 412nm, the relation between absorbency and consistency of glycerol trioleate was linear and the pertinent coefficient reached 0.971 under the range of reagent dosage and consistency in this experiment. The absorbency was decreased linearly with measuring time and the pertinent coefficient reached 0.99. The results of reproductive experiment showed that the recoveries were 98－104% and the accuracy was 1.27－4.03%. With this method, the content of triglyceride in hexane extractive of masson TMP and acidic SP were measured respectively. In this work, the degradative effect of triglyceride before and after enzyme treatment for masson wood pulp was also evaluated. The results showed that the triglyceride content was relatively high, about 50% both in the total extractive of Masson TMP and acidic SP.After enzyme treatment, the content of triglyceride in masson TMP and acidic SP was reduced by 46.31% and 35.55% respectively.
Authors and Affiliations
Haiqiang Shi , Beihai He
Keywords
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