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| Rapid Determination of Formaldehyde in Paper Cups by High Performance Liquid Chromatography |
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| DOI： |
| Key Words:paper cups; formaldehyde; high performance liquid chromatography；steam distillation extraction |
| Fund Project:出入境检验检疫行业标准制修订计划项目（2015B186K）。 |
| Author Name | Affiliation | | GUO Liqiang1，* | 1. Weifang Customs， Weifang， Shandong Province， 261041 | | LIU Peng2 | 2.Weifang Institute for Food and Drug Control， Weifang， Shandong Province， 261100 | | ZHANG Xuankai3 | 3.Weifang NO.1 Middle School， Weifang， Shandong Province， 261205 | | ZHANG Li1 | 1. Weifang Customs， Weifang， Shandong Province， 261041 | | LI Yajing1 | 1. Weifang Customs， Weifang， Shandong Province， 261041 |
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| Abstract: |
| A method was established for rapid determination of formaldehyde in paper cups by high performance liquid chromatography（HPLC）. After extracting with steam distillation， the sample was added with 2-4-dinitrophenylhydrazine under 60℃in acidic condition for 30 min， and detected by HPLC， and an external standard method was used for quantitative analysis. The results indicated that the limit of quantitation （LOQ） for formaldehyde was 2.0 mg/kg. The range of 0.01～5.0 mg/L for formaldehyde standard had good linear relationship （r>0.9994）. The average recoveries （n=6） of formaldehyde in paper cup samples at three added levels of LOQ ranged from 77.2%～95.7% with the relative standard deviations （RSDs） between 0.9%～3.1%. The method was convenient， quick and efficient， which could satisfy the demand of the determination of formaldehyde in paper cups． |
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