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Multi-component gas analyzer system
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<p>A multi-component gas analyzer system (Multi-GAS) is an instrument package used to take real-time high-resolution measurements of <a href="/facts/Volcanic_gas/uu7qYRHS">volcanic gases</a>. A Multi-GAS package includes an <a href="/facts/Infrared_spectrometer/u1Hzx617">infrared spectrometer</a> for <a href="/facts/Carbon_dioxide/xGzpppEp">CO2</a>, two electrochemical sensors for <a href="/facts/Sulfur_dioxide/jDK1fIDs">SO2</a> and <a href="/facts/Hydrogen_sulfide/UbCqjMMk">H2S</a>, and pressure–temperature–humidity sensors, all in a weatherproof box. The system can be used for individual surveys or set up as permanent stations connected to radio transmitters for transmission of data from remote locations. The instrument package is portable, and its operation and data analysis are simple enough to be conducted by non-specialists. </p><p>Multi-GAS instruments have been used to measure volcanic gases at <a href="/facts/Mount_Etna/JygAnNnP">Mount Etna</a>, <a href="/facts/Stromboli/QEhydS3I">Stromboli</a>, <a href="/facts/Vulcano/QYgRaTEv">Vulcano</a> Italy, <a href="/facts/Villarrica_(volcano)/0278FTRG">Villarrica (volcano)</a> Chile, <a href="/facts/Masaya_Volcano/DX5Ujx6J">Masaya Volcano</a> Nicaragua, <a href="/facts/Mount_Yasur/r14YYESg">Mount Yasur</a>, <a href="/facts/Miyake-jima/8lQTrfQE">Miyake-jima</a> and <a href="/facts/Mount_Asama/JxtYFrl2">Mount Asama</a> Japan, <a href="/facts/Soufri%25C3%25A8re_Hills/4nkBjloh">Soufrière Hills</a> Montserrat, with permanent installations at Etna and Stromboli. </p><p>The development of this instrument has helped scientists to monitor real-time changes in volcanic gas composition, allowing for more rapid hazard mitigation and an enhanced understanding of volcano processes. </p>