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A photoionization detector or PID is a type of gas detector. Typical photoionization detectors measure volatile organic compounds and other gases in concentrations from sub parts per billion to 10 000 parts per million (ppm). The photoionization detector is an efficient and
The WOLF eNose is a commercially available system of chemical sensor arrays using both electronic and colorimetric sensors for the detection of volatile organic compounds, and it has been employed for detection of urinary tract infection-causing bacteria. [42] [43]
The shape of the response curves are different between the two detectors. [6] Both detectors require the use of fully volatile mobile phases and non-volatile samples. CAD response is dependent on organic content of the mobile phase, response is higher with organic-rich mobile phases than aqueous ones. [16] [15]
Volatile organic compounds (VOCs) are organic compounds that have a high vapor pressure at room temperature. [1] They are common and exist in a variety of settings and products, not limited to house mold , upholstered furniture , arts and crafts supplies, dry cleaned clothing, and cleaning supplies . [ 2 ]
A gas detector is a device that detects the presence of gases in a volume of space. Gas detectors come in various form factors depending on the application. This includes handheld gas detectors, wall-mounted gas detectors, gas detectors with a built-in pump used with a probe, gooseneck gas detectors, and benchtop gas detectors.
The detection system, which consists of a sensor set, is the "reactive" part of the instrument. When in contact with volatile compounds, the sensors react, which means they experience a change of electrical properties. [8] In most electronic noses, each sensor is sensitive to all volatile molecules but each in their specific way.
Breath gas analysis is a method for gaining information on the clinical state of an individual by monitoring volatile organic compounds (VOCs) present in the exhaled breath. Exhaled breath is naturally produced by the human body through expiration and therefore can be collected in non-invasively and in an unlimited way. [1]
Houseplants together with the medium in which they are grown can reduce components of indoor air pollution, particularly volatile organic compounds (VOC) such as benzene, toluene, and xylene. Plants remove CO 2 and release oxygen and water, although the quantitative impact for house plants is small.