Instrumental Analysis Experiment: Direct Surface Analysis of Personal Protective Equipment

IF 2.9 3区教育学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Chemical Education Pub Date : 2025-02-13 DOI:10.1021/acs.jchemed.4c0142910.1021/acs.jchemed.4c01429

Liping Xu, Zhiru Bai, Hongli Li* and David Da Yong Chen*,

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Abstract

An advanced instrumental analysis experiment was designed for senior undergraduate and first-year graduate students for the evaluation of surface compositions of personal protective equipment (PPE), with attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) and direct analysis in real time high-resolution mass spectrometry (DART-HRMS). Both techniques are capable of analyzing surfaces in seconds without sampling or sample pretreatments. Students performed direct tests on common PPE products such as facial masks, gloves, and protective clothing fabrics. ATR-FTIR obtained structural characteristics of the polymeric materials, and DART-MS detected additives and residual chemicals including toxic and hazards substances. Different PPE samples showed distinctive spectroscopic profiles in both ATR-FTIR and DART-HRMS. Multivariate data analysis was implemented to demonstrate the differences among the PPE groups. Through this experiment, students can better understand the unique features of different advanced level instruments, improve their capability for in-depth data analysis, and cultivate their ability to critically evaluate the different aspects of chemicals used in real life.

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仪器分析实验：个人防护用品的直接表面分析

采用衰减全反射-傅里叶变换红外光谱（ATR-FTIR）和实时高分辨率质谱（DART-HRMS）直接分析技术，设计了一项针对大四本科生和研究生一年级学生的高级仪器分析实验，用于评估个人防护装备（PPE）的表面成分。这两种技术都能够在几秒钟内分析表面，而无需采样或样品预处理。学生们对普通个人防护用品（如口罩、手套和防护服面料）进行了直接测试。ATR-FTIR获得了聚合物材料的结构特征，DART-MS检测了添加剂和残留化学物质，包括有毒和有害物质。不同的PPE样品在ATR-FTIR和DART-HRMS中表现出不同的光谱特征。采用多变量数据分析来证明PPE组之间的差异。通过本实验，学生可以更好地了解不同先进水平仪器的特点，提高学生对数据进行深入分析的能力，培养学生批判性地评价现实生活中使用的化学品的不同方面的能力。

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来源期刊

Journal of Chemical Education 化学-化学综合

CiteScore

5.60

自引率

50.00%

发文量

465

审稿时长

6.5 months

期刊介绍： The Journal of Chemical Education is the official journal of the Division of Chemical Education of the American Chemical Society, co-published with the American Chemical Society Publications Division. Launched in 1924, the Journal of Chemical Education is the world’s premier chemical education journal. The Journal publishes peer-reviewed articles and related information as a resource to those in the field of chemical education and to those institutions that serve them. JCE typically addresses chemical content, activities, laboratory experiments, instructional methods, and pedagogies. The Journal serves as a means of communication among people across the world who are interested in the teaching and learning of chemistry. This includes instructors of chemistry from middle school through graduate school, professional staff who support these teaching activities, as well as some scientists in commerce, industry, and government.