AscariteII®	sodium-hydroxide-coated silica
C	carbon
CH4	methane
•CH3	methyl radicals
CO3–•	carbonate radicals
CO2	carbon dioxide
CRDS	cavity ringdown spectroscopy
D	deuterium
DMSO	dimethyl sulfoxide
Drierite®	anhydrous calcium sulfate
ER	endoplasmatic reticulum
EDTA	Ethylenediaminetetraacetic acid
FDA	Food and Drug Administration
[FeIV=O]2+	nonheme oxo-iron(IV)
Fe2+	ferrous iron
Fe3+	ferric iron
FID	flame ionization detector
GC	gas chromatography
GPC	L-alpha-glycerylphosphorylcholine
H2	hydrogen
H2O2	hydrogen peroxide
IAEA	International Atomic Energy Agency
IRMS	isotopic ratio mass spectrometry
N	nitrogen
NIST	National Institute of Standards and Technology
•OH	hydroxyl radicals
O2–•	superoxide radicals
PI	principal investigator
ppvb	parts per billion by volume
ppmv	parts per million by volume
PTFE	polytetrafluorethylene
RET	reverse electron transport
ROS	reactive oxygen species
S	sulfur
SAM	S-adenosyl methionine
SD	standard deviation
SI	system of units
TC	thermal conversion
mUr	milliurey
V-PDB	Vienna Pee Dee Belemnite
V-SMOW	Vienna Standard Mean Ocean Water