本幻灯片演示概述了桑迪亚国家实验室开发的用于检测水中消毒副产品三卤甲烷组（THMs）的便携式系统的信息。该系统提供了一种占地面积小、成本低、灵敏度高、可快速部署的水传感器。该独立系统重量不到32磅，占用一个随身行李大小的箱子，在不到四分钟的时间内完成THM分析。对水样进行吹扫和捕集（P&T）技术，然后 等温气相色谱法。三传感器声表面波（SAW）探测器阵列 提供一组三个响应以增加可信度，检测THM。便宜的 可编程集成电路（PIC）处理器处理系统的加热、定时、阀门控制和数据采集功能。 绘图和分析是用便携式计算机进行的。Sandia的检测系统旨在满足快速、便携、灵敏、低成本的需求 分析将描述系统和部件，以及两个实验室测试的结果 以及实地测试。还将讨论当前和正在进行的改进，例如使用微加工组件来降低整个系统的功率和尺寸，以及扩展的努力 分析物被设置为其他挥发性和半挥发性调节化合物以及与恐怖主义有关的化合物。

This slide presentation outlines information on a portable system for the detection of the trihalomethane group (THMs) of disinfection byproducts in water that was developed by Sandia National Laboratories. This system provides a small footprint, low cost, sensitive, and quickly deployable water sensor. The self contained system weighs less than 32 pounds, occupies a carry-on luggage sized case, and performs THM analysis in less than four minutes. The technique of purge and trap (P&T) is performed on a water sample followed by isothermal gas chromatography. A three sensor surface acoustic wave (SAW) detector array, which provides a set of three responses for additional confidence, detects the THMs. An inexpensive programmable integrated circuit (PIC) processor handles heating, timing, valve control and data collection functions for the system. Plotting and analysis are performed with a portable computer. Sandia's detection system is meant to fill the need for a rapid, portable, and sensitive low cost analysis. The system and components will be described, along with results from both laboratory tests and field tests. Current and ongoing improvements will also be discussed, such as the use of microfabricated components to reduce the power and size of the overall system, and efforts to expand the analyte set to other volatile and semi-volatile regulatory and terrorism related compounds.