Field Portable Device for Monitoring Trihalomethanes in Water

The treatment of water with chlorine is an effective way to kill waterborne pathogens such as bacteria, parasites and viruses. This process, however, produces a toxic byproduct from the chemical reaction between chlorine and natural organic matter in the form of trihalomethanes (THMs). These THMs are considered a significant health hazard with studies showing a link to an increased risk of cancer. Currently, total trihalomethanes (TTHMs) are analyzed using the EPA Methods 502.2 and 551.1; both of which require the use of large, expensive and non-portable laboratory equipment. Although effectively accurate, the need for such large, heavy and power-hungry equipment makes these methods unsuitable for battlefield use. Commercially available portable chemical monitors on the other hand show insufficient levels of performance in terms of detection limits and sensitivity to interference or are entirely non-specific. Hence, detection of trace levels of THMs in field still remains a challenge. Lynntech proposes to develop and deliver to the military a compact, lightweight and easy-to-operate handheld TTHM monitor capable of providing rapid test results and withstanding the harsh environmental conditions typical of field use.