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首页> 外文期刊>Electroanalysis >Influence of Methyl Substituent Position on Redox Properties of Nitroaromatics Related to 2,4,6-Trinitrotoluene
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Influence of Methyl Substituent Position on Redox Properties of Nitroaromatics Related to 2,4,6-Trinitrotoluene

机译：甲基取代基位置对与2,4,6-三硝基甲苯有关的硝基芳烃氧化还原性能的影响

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摘要

The environmental remediation of military installation sites is very important due to frequently large presence of carcinogenic derivatives of explosives in the ground and in ground waters. These nitroaromatic explosives and their derivatives are assessed by sensing devices. It is highly important to have insight on the reasons affecting the reduction potentials of these compounds. The redox properties of mono-, di- and tri-nitroaromatic compounds are studied with cyclic voltammetry at a glassy carbon electrode for comparison. We show that the presence of a methyl group in the aromatic system leads into more negative reduction potentials. The ease of nitro group reduction vary from meta>para>ortho positions relative to a methyl group. The redox properties were also studied at various pH ranging from 2 to 10. Acidic environments facilitated the reduction processes at lower potentials. These findings will have a profound influence upon understanding the processes during reductive decontaminations of the polluted sites as well as for construction of highly sensitive sensors for their determination.
机译：由于在地下和地下水中经常大量存在爆炸物的致癌衍生物，因此对军事设施进行环境修复非常重要。这些硝基芳族炸药及其衍生物通过传感装置进行评估。了解影响这些化合物还原潜力的原因非常重要。在玻璃碳电极上用循环伏安法研究了单，二和三硝基芳族化合物的氧化还原性质。我们表明，芳族体系中甲基的存在会导致更多的负还原电位。硝基还原的难易程度相对于甲基的间位>对位>邻位。还研究了在2至10的各种pH范围内的氧化还原特性。酸性环境在较低电势下促进了还原过程。这些发现将对理解污染部位的还原性去污过程中的过程以及用于确定其高度敏感的传感器的构造产生深远的影响。

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