MRI: Acquisition of Radiochemical Mass Balance Equipment for Environmental Engineering

MRI：环境工程放射化学质量平衡设备的购置

• 批准号: 0216066
• 负责人: Phillip Thompson
• 金额: $ 10.4万
• 依托单位: Seattle University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2005-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0216066&HistoricalAwards=false
• 关键词: MRI; Acquisition; Radiochemical; Mass; Balance

0216066ThompsonThis proposal is for the acquisition of instrumentation that can be used to measure the carbon-14 isotope. The equipment will support undergraduate research activities in Seattle University's Department of Civil and Environmental Engineering. The research activities discussed in this proposal seek to study uptake and transformation of the explosives RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) and HMX (octahydro-1,3,5,7- tetranitro-1,3,5,7-tetrazocine) by plants. The requested equipment will enable mass balances on [U- 14 C]RDX and [U- 14 C]HMX to be performed which will in turn determine the transport and fate of the explosives in plant tissues. Previous plant uptake studies with RDX and HMX have indicated an undesirable tendency to accumulate in the leaves of plant tissues with slow rates of transformation. This project will explore two ways in which to decrease RDX and HMX accumulation in plants and thus increase the applicability of phytoremediation of these compounds.

0216066年12月14日本提案是为了购置可用于测量碳14同位素的仪器。这些设备将支持西雅图大学土木与环境工程系的本科生研究活动。本提案中讨论的研究活动旨在研究植物对炸药RDX（六氢-1，3，5-三硝基-1，3，5-三嗪）和HMX（八氢-1，3，5，7-四硝基-1，3，5，7-四唑辛）的吸收和转化。所要求的设备将能够对[U- 14 C]RDX和[U- 14 C]HMX进行质量平衡，这反过来将决定爆炸物在植物组织中的迁移和归宿。以前对RDX和HMX的植物吸收研究表明，在转化速率缓慢的植物组织的叶片中有不希望的积累趋势。该项目将探索两种方法，以减少RDX和HMX在植物中的积累，从而提高这些化合物的植物修复的适用性。