Article: Study on detection method for harmful chemical residues in regenerated cellulose food packaging materials Journal: International Journal of Environment and Pollution (IJEP) 2026 Vol.76 No.9 pp.1 - 19 Abstract: In order to accurately evaluate the migration risk of harmful elements in regenerated cellulose food packaging materials, a new method for detecting harmful chemical residues in regenerated cellulose food packaging materials was studied. By optimising the ratio of digestion reagents and procedures, complete digestion of the sample was achieved, and the optimal analytical spectral lines for Ti, Pb, Cr, and Cd were screened. The method validation results showed a good linear relationship (r > 0.9989) among the four elements, with a detection limit between 1.96~12.94 μg∙kg-1 and a quantification limit between 6.53~43.19 μg∙kg-1. The recovery rates ranged from 83.19% to 108.32%, with a relative standard deviation of 2.12-7.41%. The accuracy and repeatability were good. The results of testing five types of commercially available samples are all below the national standard limit. This method can provide technical support for the rapid screening and safety evaluation of harmful elements in regenerated cellulose packaging materials. Inderscience Publishers - linking academia, business and industry through research

Title: Study on detection method for harmful chemical residues in regenerated cellulose food packaging materials

Authors: Xiaomeng Wang; Xi Chen; Dongyue Liu; Haibo Geng

Addresses: Department of Food and Drug Engineering, Shijiazhuang College of Applied Technology, Hebei Shijiazhuang, 050800, China; Shijiazhuang Technology Innovation Center of High-Performance Cellulose for Building Materials, Hebei Shijiazhuang, 050800, China ' Department of Food and Drug Engineering, Shijiazhuang College of Applied Technology, Hebei Shijiazhuang, 050800, China; Shijiazhuang Technology Innovation Center of High-Performance Cellulose for Building Materials, Hebei Shijiazhuang, 050800, China ' Department of Food and Drug Engineering, Shijiazhuang College of Applied Technology, Hebei Shijiazhuang, 050800, China; Shijiazhuang Technology Innovation Center of High-Performance Cellulose for Building Materials, Hebei Shijiazhuang, 050800, China ' Department of Food and Drug Engineering, Shijiazhuang College of Applied Technology, Hebei Shijiazhuang, 050800, China; Shijiazhuang Technology Innovation Center of High-Performance Cellulose for Building Materials, Hebei Shijiazhuang, 050800, China

Abstract: In order to accurately evaluate the migration risk of harmful elements in regenerated cellulose food packaging materials, a new method for detecting harmful chemical residues in regenerated cellulose food packaging materials was studied. By optimising the ratio of digestion reagents and procedures, complete digestion of the sample was achieved, and the optimal analytical spectral lines for Ti, Pb, Cr, and Cd were screened. The method validation results showed a good linear relationship (r > 0.9989) among the four elements, with a detection limit between 1.96~12.94 μg∙kg^-1 and a quantification limit between 6.53~43.19 μg∙kg^-1. The recovery rates ranged from 83.19% to 108.32%, with a relative standard deviation of 2.12-7.41%. The accuracy and repeatability were good. The results of testing five types of commercially available samples are all below the national standard limit. This method can provide technical support for the rapid screening and safety evaluation of harmful elements in regenerated cellulose packaging materials.

Keywords: regenerated cellulose; food packaging; harmful chemical residues; detection; safety evaluation; digestion pretreatment.

DOI: 10.1504/IJEP.2026.156924

International Journal of Environment and Pollution, 2026 Vol.76 No.9, pp.1 - 19

Received: 28 Apr 2026
Accepted: 28 Jul 2026
Published online: 12 Oct 2026 *

Title: Study on detection method for harmful chemical residues in regenerated cellulose food packaging materials

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