Transformation of 14C‐Labeled Graphene to 14CO2 in the Shoots of a Rice Plant,Angewandte Chemie International Edition

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Transformation of 14C‐Labeled Graphene to 14CO2 in the Shoots of a Rice Plant
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-07-09 , DOI: 10.1002/anie.201805099
Chi Huang ₁ , Tian Xia ₂ , Junfeng Niu ₃ , Yu Yang ₄ , Sijie Lin ₅ , Xiangke Wang ₆ , Guoqing Yang ₁ , Liang Mao ₁ , Baoshan Xing ₇

Affiliation

This study focused on using carbon‐14‐labeled few‐layer graphene (FLG) to determine its uptake, distribution, transformation, and depuration in rice plants. After 7 d hydroponic exposure to FLG suspension at 250 μg L⁻¹, roots accumulated 694.8 mg kg⁻¹ graphene and shoots had 53.7 mg kg⁻¹ graphene from intra‐plant translocation. FLG could likely pass through the cell wall and membrane and enter the chloroplast in the shoots. After 14 days of depuration, only about 15 % of the accumulated FLG were eliminated into the depuration solution with about 70 % of graphene retained in the plants. About 9 % of the accumulated FLG was degraded to ¹⁴CO₂ and proposed that reaction with OH^. in the leaves may likely contribute to the degradation of FLG, which had structural defects. These findings have an important impact on the long‐term environmental fate of graphene‐related materials in soil–plant systems.

中文翻译：

水稻苗中14C标记的石墨烯向14CO2的转化

这项研究的重点是使用碳14标记的少层石墨烯（FLG）来确定其在水稻植物中的吸收，分布，转化和纯化。在250μgL ^-1的FLG悬浮液中水耕7 d后，根部累积了694.8 mg kg ^-1石墨烯，而芽中53.7 mg kg ^-1的石墨烯来自植物内易位。FLG可能穿过细胞壁和细胞膜，并进入芽中的叶绿体。净化14天后，仅约15％的累积FLG被清除到净化溶液中，其中约70％的石墨烯保留在植物中。大约9％的累积FLG降解为¹⁴ CO ₂并提出与OH反应^。叶片中的胡萝卜素可能会导致FLG的降解，而FLG具有结构缺陷。这些发现对土壤-植物系统中石墨烯相关材料的长期环境命运具有重要影响。

更新日期：2018-07-09

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