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| Study on the Determination of Active Ingredient Content in Polyamide Epichlorohydrin Wet-strength Agents by Gas Chromatography-mass Spectrometry |
| Received:December 02, 2025 Revised:December 19, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.05.016 |
| Key Words:polyamide epichlorohydrin wet-strength agent effective component gas chromatography-mass spectrometry esterification derivatization nuclear magnetic resonance hydrogen spectroscopy |
| Fund Project:制浆造纸国家工程实验室基金（ZZY2024ZZXT03）。 |
| Author Name | Affiliation | Postcode | | ZHANG Jingfan* | 1Department of Chemistry, College of Chemistry and Life Science, Center of Excellence for Environmental Safety and Biological Effects, State Key Lab of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing,100124
2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | SHEN Zhenhuang | 3Sinolight （Jinjiang） Hygiene Products Research Co., Ltd., Jinjiang, Fujian Province, 362200 | 362200 | | ZHU Yong | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | LI Liangjun | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | ZHAO Shixin | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | HAO Zhixing | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | ZHANG Yue | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | LYU Xia | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | MENG Fanjin | 5China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102 | 100102 | | WANG Xinting | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | FENG Yafang | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | YUAN Taojing | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | ZHANG Qingwen | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102
6Technology Innovation Center of Light Industrial Consumer Goods Quality and Safety, State Administration for Market Regulation, Beijing, 100015 | 100015 | | WEN Jianyu* | 2Sinolight Paper Inspection Certification Co., Ltd., Beijing, 100102
4National Paper Quality Inspection and Testing Center, Beijing, 100102
6Technology Innovation Center of Light Industrial Consumer Goods Quality and Safety, State Administration for Market Regulation, Beijing, 100015 | 100015 | | WANG Xiayan* | 1Department of Chemistry, College of Chemistry and Life Science, Center of Excellence for Environmental Safety and Biological Effects, State Key Lab of Materials Low-Carbon Recycling, Beijing University of Technology, Beijing,100124 | 100124 |
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| Abstract:Aimed to establish an accurate， reliable， and widely applicable method for the quantitative analysis of the active ingredient content in polyamide-epichlorohydrin (PAE) wet-strength agents， based on the molecular structural characteristics of PAE， in this study， PAE wet-strength agent samples were hydrolyzed to yield the characteristic unit， adipic acid， which was then esterified to form diethyl adipate for subsequent determination via gas chromatography-mass spectrometry (GC-MS). The results indicated that the optimum conditions were that acid-to-water volume ratio of 2∶1， hydrolysis temperature of 275 ℃， reflux time of 2 h， and esterification temperature of 70 ℃， with a matrix interference exclusion step employed to ensure the accuracy of the results. Under these conditions， the relative error of the blind sample test results was within ±4.1%， and the relative deviation from the results obtained by nuclear magnetic resonance hydrogen spectroscopy(¹H NMR) was 2%. |
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