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基于测量不确定性的定量复合材料测试模型及其用于检测甲酸盐的应用

Lina Huang¹, Yi Hu², Guanwei Li³

¹Quality and Standards Academy, Shenzhen Technology University, Shenzhen, China.

Frontiers in chemistry

|October 4, 2023

概括

本研究引入了一种定量复合材料测试模型,以提高化学分析效率并降低成本. 该方法优化了样本分组,确保检测灵敏度,同时大大节省了甲酸盐测试中的工作量.

科学领域:

分析化学分析化学
化学计量学化学计量学
环境科学环境科学

背景情况:

提高化学分析中的定量检测效率对于降低成本至关重要.
复合测试提供了潜在的工作负载节省,但需要仔细优化以保持灵敏度.
现有的复合试验方法可能无法充分平衡效率与分析严谨性.

研究的目的:

开发一个定量复合测试模型,以提高检测效率和降低成本.
为了建立一个最佳的组合群体大小 (K_opt),平衡工作负载和统计有效性.
确保复合材料的测试符合规定的极限 (L) 和量化要求 (LOQ),考虑到测量不确定性 (U).

主要方法:

开发了一种基于化学分析测量不确定性的定量复合材料测试模型.
使用L,LOQ和U参数计算最大允许的复合样本 (K_max).
通过平衡K_opt,K_max和实践测试信息来确定合适的复合组大小 (K_a).
应用该模型来建立一个实用的定量复合材料测试方法来测试玩具甲酸盐 (PAE).

主要成果:

针对玩具甲酸盐 (PAE) 开发的方法实现了9.1-41.8mg/kg的数量限制,相对不确定性为16.6%-23.2%.
恢复率在91.0%-112.3%之间,相对偏差低于10%,符合国际PAE标准.
与传统方法相比,定量复合测试模型减少了17.9%-80.4%的工作量,但没有降低检测灵敏度.

结论:

定量复合试验模型有效提高化学分析效率,降低成本.
该方法确保了分析灵敏度,同时大大优化了工作量,特别是在玩具甲酸盐等常规测试中.
这种方法将在修订后的ISO 8124-6标准中实施,用于玩具甲酸盐分析.

关键词:

复合材料的测试是复合材料的测试测量不确定性测量不确定性甲酸盐 (PAE) 是一种定量复合试验模型的定量复合试验模型.玩具玩具玩具玩具玩具

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