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Quantification of carboxyl‐functionalized multiwall carbon nanotubes in plant tissues with programmed thermal analysis
Author(s) -
Nava Valeria,
Das Kamol,
Amin Vinay,
Gronstal Steven,
Wang Xiaoliang,
Chow Judith C.,
Watson John G.,
Yang Yu
Publication year - 2021
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.1002/jeq2.20180
Subject(s) - carbon nanotube , lactuca , detection limit , elemental analysis , thermal analysis , chemistry , quantitative analysis (chemistry) , carbon fibers , thermal , nuclear chemistry , chemical engineering , materials science , nanotechnology , organic chemistry , chromatography , botany , composite material , composite number , biology , engineering , physics , meteorology
In this study, carboxyl functionalized multiwall carbon nanotubes (c‐MWCNTs) in plant (lettuce [ Lactuca sativa Bionda Ricciolina]) tissues were quantitatively analyzed with programmed thermal analysis coupled with a sequential digestion. Programmed thermal analysis evidenced a linear relationship between c‐MWCNT–bound C and elemental C detected. A detection limit of 114–708 μg C g −1 plant tissues (dry mass) was achieved for analysis of c‐MWCNTs. The method was demonstrated using the tissues of lettuce cultured hydroponically for 3 wk with c‐MWCNTs at an exposure of 10 and 20 μg ml −1 . This quantitative analysis can be used to provide insights into carbon nanotube exposure through agricultural products and promote its sustainable application.