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| Comparative Analysis of Fluorescence Intensity and Fluorescent Migration in Paper |
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| DOI：10.11980/j.issn.0254-508X.2011.04.004 |
| Key Words:brightness fluorescence spectrophotometry paper fluorescent material migration |
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| Abstract:17 samples in which fluorescence was not meet the regulation requirement based on the analysis following the analysis method for food packaging base paper hygiene GB / T 5009.78—2003 were tested furtherly. Fluorescence intensity and fluorescent migration were tested by fluorescence spectrophotometry and brightness instrument respectively, using fluorescent whitening agent VBL as the standard material. When the concentrations of VBL were from 0 to 4.0 mg/L，they had a linear relationship with the emitted fluorescence intensity. The experiments showed that different methods derived different results. The fluorescent migration may be affected by basis weight of the paper and the manufacturing process. The brightness method, which can be used to test the fluorescent substance in the surface of paper, can not reflect the migration of fluorescent. |
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