相关实验视频

Updated: Jul 14, 2025

Collection of Alfalfa Root Exudates to Study the Impact of Di2-ethylhexyl Phthalate on Metabolite Production

Collection of Alfalfa Root Exudates to Study the Impact of Di2-ethylhexyl Phthalate on Metabolite Production

Published on: June 2, 2023

从用于食品保存的非食品塑料容器中发现的酸盐的迁移研究

Olivier Songue Same^1,2,3, Pierre Nobosse⁴, Guillaume Legrand Ngolong Ngea⁵

¹Centre Pasteur du Cameroun, Physicochemical Section of Hygiene and Environment Department, PO Box 1274, Yaounde, Cameroon.

|October 9, 2023

概括

酸 (PAE) 从非食品级塑料油漆桶迁移到纸质纸,特别是在高温和极端pH下. 这种迁移构成健康风险,因为PAE可以破坏内分泌功能.

科学领域:

环境化学环境化学
食品安全食品安全
毒理学毒理学毒理学

背景情况:

酸乙 (PAE) 是塑料添加剂,可以入食品中.
非食品级塑料,如重新使用的油漆桶,对PAE迁移的风险更高.
在喀麦隆,传统的食品保存方法涉及使用这种容器.

研究的目的:

调查PAE总量从油漆桶迁移到纸张中的情况.
确定影响PAE迁移的关键因素.
为了建模PAE迁移的动力学.

主要方法:

普莱克特-伯曼和全因数设计,以确定影响因素 (pH,温度,接触时间).
以面部为中心的复合材料设计,以优化迁移条件.
使用伪第一顺序,伪第二顺序和粒子内部扩散模型来建模迁移动力学.

主要成果:

pH,温度和接触时间是影响PAE迁移的最重要因素.
观察到这些因素之间的非线性效应和相互作用.
在特定的条件下,迁移水平超过50μg/L (纸温度>70°C,pH ≤4或≥10,接触时间>2h).

结论:

在喀麦隆的常用条件下,重新使用的油漆桶是食品中PAE污染的重要来源,特别是PAP.
迁移最好用伪二次运动模型来描述.
调查结果强调需要更安全的食品保存实践,以减轻与PAE暴露相关的健康风险.

关键词:

实验设计实验设计运动动力学运动动力学运动动力学移民移民移民非食品塑料其他非食品塑料在PAE的基础上,PAE是PAE.巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴巴

更多相关视频

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Published on: July 1, 2017

Sampling, Identification and Characterization of Microplastics Release from Polypropylene Baby Feeding Bottle during Daily Use

Sampling, Identification and Characterization of Microplastics Release from Polypropylene Baby Feeding Bottle during Daily Use

Published on: July 24, 2021

相关概念视频

Plasticizers

Plasticizers

Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...