在聚合物材料中同时对33种受限制物质进行选,使用热解/热吸附气色谱法-质谱法
Tiantian Zhang1, Xiwen Ye2, Xin Luo1
1Technology Center of Qingdao Customs, Qingdao, 266000, China.
Analytical and bioanalytical chemistry
|July 9, 2023
概括
一种新的无溶剂热解气色谱-质谱法有效选33种受限制的聚合物添加剂. 这种快速的技术简化了塑料中酸盐,阻燃剂和稳定剂的测试,有助于遵守法规.
科学领域:
- 聚合物化学 聚合物化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 聚合物材料往往含有受到限制的添加剂,这些添加剂对环境和健康构成风险.
- 准确和高效的选方法对于符合法规和材料安全至关重要.
- 检测受限制添加剂的传统方法可能耗时,需要大量的样品准备.
研究的目的:
- 开发一种快速,高效和无溶剂的方法,用于同时选聚合物材料中的多种受限制添加剂.
- 建立一个全面的分析技术,能够检测广泛的受管制物质.
主要方法:
- 一种无溶剂的热解气体色谱-质谱法 (Py-GC-MS) 方法被优化为添加剂溶解.
- 同时对33种受限制物质进行查,包括酸盐,酸和酸阻燃剂,紫外线稳定剂和双.
- 方法验证使用内部参考材料,认证参考材料和能力测试样本.
主要成果:
- 优化的Py-GC-MS方法表现出良好的灵敏度,大多数化合物的线性范围在100-1000 mg/kg或300-1000 mg/kg之间.
- 方法验证显示相对标准偏差低于15%,恢复率一般在75.9%至107.1%之间.
- 对现实世界样品的应用确定了酸盐作为消费性塑料中常见的添加剂,并在170个回收塑料样品中的14个中检测到受限制物质.
结论:
- 开发的无溶剂Py-GC-MS方法提供了一种快速,高效和全面的方法,用于选33种受限制的聚合物添加剂,而无需样本预处理.
- 这种方法显著改进了传统技术,因为它可以同时分析广泛的受管制物质.
- 这些发现支持加强聚合物产品和回收材料的监管控制和安全评估.
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