In this study, carboxyl functionalized multiwall CNTs (c-MWCNTs) in plant (lettuce) tissues were quantitatively analyzed with programmed thermal analysis (PTA) coupled with a sequential digestion. PTA analysis evidenced a linear relationship between c-MWCNT-bound carbon and elemental carbon (EC) detected. A detection limit of 114 - 708 μg C/g plant tissues (dry mass) was achieved for analysis of c-MWCNTs. The method was demonstrated using the tissues of lettuce cultured hydroponically for three weeks with c-MWCNTs at an exposure of 10 and 20 μg/mL. This quantitative analysis can be used to provide insights into CNT exposure through agricultural products and promote its sustainable application. This article is protected by copyright. All rights reserved.

中文翻译：

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用程序热分析定量植物组织中羧基功能化的多壁碳纳米管

在这项研究中，植物（生菜）组织中的羧基功能化多壁碳纳米管（c-MWCNTs）通过程序热分析（PTA）和顺序消化进行定量分析。PTA 分析证明 c-MWCNT 结合的碳和检测到的元素碳 (EC) 之间存在线性关系。对 c-MWCNT 的分析达到了 114 - 708 μg C/g 植物组织（干重）的检测限。该方法使用水培培养三周的生菜组织与 c-MWCNTs 在 10 和 20 μg/mL 的暴露下进行演示。这种定量分析可用于深入了解通过农产品接触碳纳米管的情况，并促进其可持续应用。本文受版权保护。版权所有。