Stable isotopic signatures of methane from waste sources through atmospheric measurements

This study aimed to characterize the carbon isotopic signatures ( ? 13 C-CH 4 ) of several methane waste sources, predominantly in UK, and during field campaigns Netherlands Turkey. CH plumes emitted from sources were detected mobile surveys using a cavity ring-down spectroscopy (CRDS) analyser. Air samples collected for subsequent isotope analysis by gas chromatography ratio mass spectrometry (GC-IRMS) . The determined through Keeling plot approach bivariate correlated errors intrinsic scatter (BCES) fitting method. 2 H-CH identified biogas plants (?54.6 ± 5.6‰, n = 34; ?314.4 23‰ 3), landfills (?56.8 2.3‰, 43; ?268.2 2.1‰, 2), sewage treatment (?51.6 2.2‰, 15; ?303.9 22‰, 6), composting facilities (?54.7 3.9‰, landfill leachate plant (?57.1 1.8‰, one water (?53.7 0.1‰) recycling facility (?53.2 0.2‰). overall signature 71 ranged ?64.4 ?44.3‰, with an average ?55.1 4.1‰ (n 102) C, ?341 ?267‰, ?300.3 25‰ 11) H, which can be distinguished other source types UK such as leaks ruminants. also demonstrates that signatures, addition , aid better apportionment increase granularity data required improve regional modelling. • Isotopic C NL TR determined. Feedstock have impact on generated biogas. Open active status has great signature. Sewage is more enriched than sources. Average 4.1‰.