Affordable gas sensor setup developed by Tohoku University team monitors trace levels of health-indicating chemicals, paving the way for future non-invasive studies.
Using hollow-core optical fibre as a sensitive gas cell, researchers in Japan have devised a relatively simple and affordable sensor for monitoring biomarkers in human breath at low concentrations. Trace amounts of gases exhaled through the nose and mouth offer clues to respiratory conditions such as asthma, as well as other easy-to-administer health screening opportunities.
Tohoku University scientists explained how their device works in the journal Sensors, using isoprene as an example. Isoprene is a known indicator of cholesterol synthesis and could offer valuable insights into a patient’s metabolism. Breath measurements taken from volunteers throughout the day allowed researchers to track changes in isoprene levels following activities such as exercise or eating.
Breath analysis has attracted much attention because it is non-invasive and has the potential to inform users on a range of health topics. However, detecting biomarkers present at low-concentrations often requires bulky and expensive laboratory systems. The Japanese scientists believe their sensor paves the way for a more portable and affordable solution.
Optical setup for gas analysis
Key to the success of the group’s apparatus is a 3-meter-long, hollow-core optical fibre, which is coated on the inside with a reflective film. Participants breathe into a connecting tube that guides the exhaled gases into the fibre’s core, where the contents are exposed to laser-driven ultraviolet light. A detector placed at the end of the optical path highlights any portions of the light signal that are absorbed as the ultraviolet emission passes through the gas sample. And this series of so-called ‘absorption peaks’ forms a chemical signature that reveal which molecules are present. The combination of a long beam-path and high-intensity emission enhances the measurement, so even chemicals present at parts-per-billion levels can be detected.
The Latest on: Real-time breath analysis
- Bank Of America: December CCAR And The Buybacks Catalyston November 25, 2020 at 11:24 am
The Fed is about to release the pandemic-induced mid-cycle CCAR stress tests. BAC should easily pass the CCAR stress tests and with flying colours.
- Smart Watches And Fitness Trackers With GPS To Track Your Runs, Steps Taken And Moreon November 17, 2020 at 11:23 pm
Smartwatches with built-in GPS not only lets you track your daily runs, steps taken and analyze other metrics but also help you in mapping out your ru ...
- New Optical Method Paves Way to Breath Test for Cancer Biomarkeron November 16, 2020 at 8:20 am
Researchers have developed an extremely sensitive, yet simple optical method for detecting formaldehyde in a person's breath.
- Deepverge PLC - Update on detection productson November 16, 2020 at 1:13 am
F Deepverge PLC 16 November 2020 16 November 2020. Microtox PD units, retrofitted with AI based optofluidic pathogen ...
- COVID-19 reveals how obesity harms the body in real timeon November 15, 2020 at 7:27 am
The COVID-19 pandemic has thrust the obesity epidemic once again into the spotlight, revealing that obesity is no longer a disease that harms just in the long run but one that can have acutely ...
via Google News and Bing News