Medical professionals might also be able to use such a sensor to check a patient's breath for traces of chemicals that indicate liver disease or internal inflammation. (scientificamerican.com)
The end product oftentimes contains traces of these chemicals. (myorganicformula.com)
The pesticides are used on many kinds of crops grown in different climates, but traces of the chemicals showed up even in honey from remote islands with very little agriculture. (sciencenews.org)