Critical review of potential technologies for a wearable benzene sensor system
We evaluate different methods to detect benzene at a parts-per-billion level regarding their potential to be used in a wearable sensor. Benzene is a carcinogenic molecule, regarded as a major health threat by the World Health Organization. A wearable sensor is necessary to detect leaks immediately,...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
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| Series: | Sensors and Actuators Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666053924000262 |
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| Summary: | We evaluate different methods to detect benzene at a parts-per-billion level regarding their potential to be used in a wearable sensor. Benzene is a carcinogenic molecule, regarded as a major health threat by the World Health Organization. A wearable sensor is necessary to detect leaks immediately, but it is challenging to achieve such low limits of detection and quantification, even with laboratory equipment. A wearable sensor must, in addition to good selectivity and sensitivity, meet stricter requirements of size, weight, temperature, repeatability, and power consumption. We conclude that the most promising techniques for a wearable sensor are either infrared photoacoustic spectroscopy near 14.8 μm, or a photoionization detector combined with one of three selective devices: micro-gas chromatography, cavitands, or catalytic filters (WO3, for example). Ultraviolet photoacoustic spectroscopy may also be a suitable future technique for a wearable benzene sensor when efficient LEDs and lasers become available at many UV-C wavelengths. |
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| ISSN: | 2666-0539 |