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A Rapid and Sensitive Quantitative Analysis Method for TNT using Raman Spectroscopy
Author(s) -
Gao Feng,
Liu Wenfang,
Meng Zihui,
Su Pengfei,
Li Zhixue,
Wang Minghui
Publication year - 2019
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201800281
Subject(s) - raman spectroscopy , reproducibility , analytical chemistry (journal) , substrate (aquarium) , spectroscopy , materials science , trinitrotoluene , quantitative analysis (chemistry) , qualitative analysis , chemistry , chromatography , optics , organic chemistry , qualitative research , social science , physics , oceanography , quantum mechanics , sociology , explosive material , geology
Raman spectroscopy as a rapid and sensitive qualitative detection method has been applied in many fields; however, it is rarely used for the quantitative purpose due to poor reproducibility of peak area. Here, 2,4,6‐trinitrotoluene (TNT) and its two byproducts, 2,4‐dinitrotoluence (DNT) and 2,6‐DNT, were firstly qualitatively analyzed by Raman spectroscopy and the characteristic parameters were extracted. Then, in the range of 2 %–9 % and 10 %–90 %, the standard curves were established between the area ratio of the characteristic peaks and the content of 2,4‐DNT or 2,6‐DNT using silver nanoflowers as the enhancing substrate. The fitting correlation for TNT/2,4‐DNT or TNT/2,6‐DNT system is around 0.99. The peak area ratio of the components exhibits much better dada reproducibility than peak area, and the relative error does not exceed 9.3 % for at least six groups of parallel experiments.