Methane concentrations, carbon isotopes, hydrogen isotopes, and clumped isotopologues of vehicle exhaust samples collected in the first sampling campaign.

Methane concentrations, carbon isotopes, hydrogen isotopes, and clumped isotopologues of vehicle exhaust samples collected in the first sampling campaign.

<p>Methane concentrations, carbon isotopes, hydrogen isotopes, and clumped isotopologues of vehicle exhaust samples collected in the first sampling campaign.</p>

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Bibliographic Details
Main Author:	Jiayang Sun (512348) (author)
Other Authors:	Mojhgan A. Haghnegahdar (20765718) (author), Julianne M. Fernandez (11013314) (author), Cédric Magen (9769778) (author), James Farquhar (6968588) (author)
Published:	2025
Subjects:	Molecular Biology Neuroscience Pharmacology Biotechnology Evolutionary Biology Developmental Biology Cancer Mental Health Infectious Diseases Virology Chemical Sciences not elsewhere classified clumped isotopologue analyses 25 &# 8240 clumped isotopologues exhibit high vehicle activity 13 </ sup 12 </ sup positive linear relationship div >< p 4 &# 8240 methane clumped isotopologues observed isotopic fractionation 8 ‰ clumping reduce methane emissions clumped isotopologues &# 948 isotopic fractionation vehicle maintenance vehicle exhaust 22 ‰ 170 ‰ methane production methane oxidation methane formation methane emissions methane combustion exhaust methane δd values δd ), varied significantly values showed thermo equilibrium study characterized small portion samples showed rayleigh fractionations potentially influenced operational phases often overlooked notable lack natural gas marked increase less negative large portion knowledge limits isotopic signatures intricate dynamics ethane ratio characterization regarding catalytic converter also makes aligning closer 3000 ppm 120 ‰, 11 ‰,
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