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首页> 外文期刊>Electroanalysis >Sensitive voltammetric sensing of the 2,3-dimethyl-2,3-dinitrobutane (Dmnb) explosive taggant
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Sensitive voltammetric sensing of the 2,3-dimethyl-2,3-dinitrobutane (Dmnb) explosive taggant

机译:2,3-二甲基-2,3-二硝基丁烷(Dmnb)爆炸性标签剂的灵敏伏安法感测

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摘要

The highly sensitive voltammetric detection of the 2,3-dimethyl-2,3-dinitrobutane (DMNB), a required additive to commercial plastic explosives, is described. The protocol relies on a fast square-wave voltammetric measurement of the DMNB explosive taggant at an unmodified carbon fiber electrode using a phosphate buffer (pH 7.0) solution. Different solutions and, working electrodes were evaluated. Under the optimal conditions, a linear response is observed over the 300 - 3000 mu g/L DMNB concentration range examined, with a detection limit of 60 mu g/L. A highly stable response, with a relative standard deviation (RSD) of 2.6%, is observed for 30 repetitive measurements. Such electrochemical approach offers great promise for a simple, rapid, sensitive and inexpensive field screening of plastic explosives. Preliminary data illustrate the utility of electrochemical detection for electrophoretic microchips for the simultaneous measurements of DMNB, cyclotrimethylenetrinitramine (RDX) and pentaerythritoltetranitrate (PETN).
机译:描述了2,3-二甲基-2,3-二硝基丁烷(DMNB)的高灵敏伏安检测,DMNB是商业塑料炸药的必需添加剂。该协议依赖于使用磷酸盐缓冲液(pH 7.0)溶液在未经修饰的碳纤维电极上对DMNB爆炸性标签剂进行快速方波伏安测量。评价了不同的溶液和工作电极。在最佳条件下,在300-3000μg / L DMNB浓度范围内观察到线性响应,检出限为60μg / L。在30次重复测量中,观察到了高度稳定的响应,相对标准偏差(RSD)为2.6%。这种电化学方法为塑料炸药的简单,快速,灵敏和廉价的现场筛选提供了广阔的前景。初步数据说明了电化学检测用于电泳微芯片的同时测量DMNB,环三亚甲基三硝胺(RDX)和季戊四醇四硝酸酯(PETN)的实用性。

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