• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Field Analytical Chemistry and Technology >New horizons:explosive detection in soil extracts with a fiber-optic biosensor
【24h】

New horizons:explosive detection in soil extracts with a fiber-optic biosensor

机译：新视野：利用光纤生物传感器对土壤提取物中的爆炸物进行检测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Contamination of soils with the explosives TNT and RDX is a worldwide problem that has resulted from inadequate disposal methods. Many of these contamination sites are currently being characterized or are undergoing remediation. The ability to obtain real-time, on-site results would save remediation time, reduce cost, and provide for efficient use of labor during cleanup. The NRL fiber-optic biosensor, which has been demonstrated for the on-site detection of explosives in ground water, has expanded its horizons to include detection in soil extracts. Soil samples from several sites in the United States were analyzed for TNT and RDX. The explosives were removed from the soil with a 3-min acetone extraction. The extract was mixed with buffer containing a fluorescent explosive analog and exposed to the antibodycoated optical probes. In the presence of either TNT or RDX, a decrease in the fluorescence signal, proprtional to the explosive concentration, was observed. In less than 20 min, analysis on four optical probes was completed. Extract results from the fiber-optic biosensor were compared to those from U.S.EPA SW 846 Method 8330(reverse-phase high-performance chromatography). Detection limits of 0.5mg/kg(0.1mg/l) of TNT and RDX in soil acetone extracts were obtained.
机译：TNT和RDX炸药对土壤的污染是世界范围内的问题，这是由于处置方法不当造成的。这些污染点中的许多目前正在表征或正在修复中。获得实时，现场结果的能力将节省补救时间，降低成本并在清理过程中有效利用人工。 NRL光纤生物传感器已被证明可用于现场检测地下水中的爆炸物，现已扩大其应用范围，包括对土壤提取物中的检测。分析了来自美国多个地点的土壤样品的TNT和RDX。用3分钟的丙酮萃取从土壤中除去炸药。将提取物与含有荧光炸药类似物的缓冲液混合，并暴露于抗体包被的光学探针。在存在TNT或RDX的情况下，观察到荧光信号的减少与爆炸物浓度成正比。在不到20分钟的时间内，完成了对四个光学探针的分析。将来自光纤生物传感器的提取结果与美国EPA SW 846方法8330（反相高效色谱）的结果进行了比较。测定土壤丙酮提取物中TNT和RDX的检出限为0.5mg / kg（0.1mg / l）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号