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Adsorbent-SERS Technique for Determination of Plant VOCs from Live Cotton Plants and Dried Teas.
ACS Omega ( IF 3.7 ) Pub Date : 2020-02-05 , DOI: 10.1021/acsomega.9b03500 Jinhyuk Park 1 , J Alex Thomasson 1 , Cody C Gale 2 , Gregory A Sword 2 , Kyung-Min Lee 3 , Timothy J Herrman 3 , Charles P-C Suh 4
ACS Omega ( IF 3.7 ) Pub Date : 2020-02-05 , DOI: 10.1021/acsomega.9b03500 Jinhyuk Park 1 , J Alex Thomasson 1 , Cody C Gale 2 , Gregory A Sword 2 , Kyung-Min Lee 3 , Timothy J Herrman 3 , Charles P-C Suh 4
Affiliation
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We developed a novel substrate for the collection of volatile organic compounds (VOCs) emitted from either living or dried plant material to be analyzed by surface-enhanced Raman spectroscopy (SERS). We demonstrated that this substrate can be utilized to differentiate emissions from blends of three teas, and to differentiate emissions from healthy cotton plants versus caterpillar-infested cotton plants. The substrate we developed can adsorb VOCs in static headspace sampling environments, and VOCs naturally evaporated from three standards were successfully identified by our SERS substrate, showing its ability to differentiate three VOCs and to detect quantitative differences according to collection times. In addition, volatile profiles from plant materials that were either qualitatively different among three teas or quantitatively different in abundance between healthy and infested cotton plants were confirmed by collections on Super-Q resin for dynamic headspace and solid-phase microextraction for static headspace sampling, respectively, followed by gas chromatography to mass spectrometry. Our results indicate that both qualitative and quantitative differences can also be detected by our SERS substrate although we find that the detection of quantitative differences could be improved.
中文翻译：
吸附剂-SERS技术测定鲜活棉株和干茶中的植物挥发性有机化合物。
我们开发了一种新型基质，用于收集从活的或干燥的植物材料中释放出的挥发性有机化合物（VOC），并通过表面增强拉曼光谱（SERS）对其进行分析。我们证明了该基质可用于区分三种茶的混合排放，以及区分健康棉株和毛虫侵染的棉株的排放。我们开发的底物可以在静态顶空进样环境中吸附VOC，并且通过我们的SERS底物成功地鉴定了从三种标准物中自然蒸发的VOC，显示了其区分三种VOC并根据采集时间检测定量差异的能力。此外，通过分别在Super-Q树脂上收集动态顶空和固相微萃取进行静态顶空采样，分别确认了三种茶在质量上不同或在健康和受侵染的棉花植物之间的植物材料中的挥发性分布特征，然后分别进行了鉴定。气相色谱法进行质谱分析。我们的结果表明，尽管我们发现定量差异的检测可以改善，但我们的SERS底物也可以检测到定性和定量差异。
更新日期：2020-02-18
中文翻译：
吸附剂-SERS技术测定鲜活棉株和干茶中的植物挥发性有机化合物。
我们开发了一种新型基质，用于收集从活的或干燥的植物材料中释放出的挥发性有机化合物（VOC），并通过表面增强拉曼光谱（SERS）对其进行分析。我们证明了该基质可用于区分三种茶的混合排放，以及区分健康棉株和毛虫侵染的棉株的排放。我们开发的底物可以在静态顶空进样环境中吸附VOC，并且通过我们的SERS底物成功地鉴定了从三种标准物中自然蒸发的VOC，显示了其区分三种VOC并根据采集时间检测定量差异的能力。此外，通过分别在Super-Q树脂上收集动态顶空和固相微萃取进行静态顶空采样，分别确认了三种茶在质量上不同或在健康和受侵染的棉花植物之间的植物材料中的挥发性分布特征，然后分别进行了鉴定。气相色谱法进行质谱分析。我们的结果表明，尽管我们发现定量差异的检测可以改善，但我们的SERS底物也可以检测到定性和定量差异。
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