再生纸中荧光增白剂迁移特性及迁移模型的研究

Migration characteristics and mathematical model of the fluorescent whitening agent in recycled paper

中文关键词:  再生纸  荧光增白剂  迁移  迁移模型

英文关键词:recycled paper  fluorescent whitening agent  migration  migration model

中文摘要:

      目的 对13种再生纸中荧光增白剂在不同模拟物中的迁移行为进行研究, 并初步建立迁移数学模型。方法 选用月湖水和正己烷作为环境模拟迁移物和油性模拟物, 研究荧光增白剂在23 ℃、40 ℃时向环境中的迁移行为, 以及23℃时向油性模拟物中的迁移行为, 采用高效液相色谱法测定荧光增白剂迁移量。结果 13种再生纸中均检测出荧光增白剂, 且随时间、温度的增加迁移量均有增加, 月湖水环境迁移速度较慢, 96 h迁移量小于2.4%, 油性模拟物正己烷中荧光增白剂迁移迅速, 30 min基本达到100%迁移, 结合迁移试验数据建立迁移模型y=a?exp(bx)。结论 建立的模型可以有效评估再生纸的安全性。

英文摘要:

      Objective To study the migration of the fluorescent whitening agents from 13 kinds of recycled paper into different simulants, and establish the mathematical model of migration. Methods Month lake water and hexane were selected as the simulants of environment simulant, and hexane as oil simulant. The migration of fluorescent whitening agents in the environment simulant at 23 ℃, 40 ℃ was studied, as well as in oil simulant at 23 ℃. The migration of fluorescent whitening agent in recycle paper was detected by HPLC. Results Fluorescent whitening agents in 13 kinds of recycled paper were detected. The amount of migration was increased with time and temperature increasing. The migration speed in environment simulant was slow, less than 2.4% by 96 h, and in oil simulant was rapid, reaching 100% migration by 30 min. The migration model y=a?exp(bx) was established with the migration data. Conclusion The established model can effectively assess the safety of recycled paper.