Ethane measurement by Picarro CRDS G2201-i in laboratory and field conditions: potential and limitations
نویسندگان
چکیده
Abstract. Atmospheric ethane can be used as a tracer to distinguish methane sources, both at the local and global scale. Currently, measured in field using flasks or situ analyzers. In our study, we characterized CRDS Picarro G2201-i instrument, originally designed measure isotopic CH4 CO2, for measurements of ethane-to-methane ratio mobile-measurement scenarios, near sources under conditions. We evaluated limitations potential ratio, thus extending instrument application simultaneously two source proxies field: carbon ratio. First, laboratory tests were run characterize stationary Subsequently, performance was tested conditions part controlled release experiment. Finally, during mobile focused on gas compressor stations. The results from afterwards compared with obtained instruments specifically measurements. Our study shows configuration determine plumes measurement an uncertainty 50 ppb. Assuming typical ratios ranging between 0 0.1 ppb ppb−1, conclude that accurately estimate “true” within 1σ when enhancements are least 1 ppm, found vicinity strongly emitting sites such natural stations roadside pipeline leaks.
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ژورنال
عنوان ژورنال: Atmospheric Measurement Techniques
سال: 2021
ISSN: ['1867-1381', '1867-8548']
DOI: https://doi.org/10.5194/amt-14-5049-2021