HumanIsotopes
Direct isotope values from human bones and teeth, including Carbon, Nitrogen and Oxygen, including sequential slices. Note on standards used to express stable isotope values: Carbon ratios from collagen are all expressed relative to the Vienna Pee-Dee Belemnite (VPDB) standard. Nitrogen ratios from collagen are all expressed relative to atmospheric N2 (Air N2). Carbon ratios from the carbonate fraction of enamel or bone bioapatite are all expressed realtive to the Vienna Pee-Dee Belemnite (VPDB) standard. Oxygen ratios from the carbonate fraction bioapatite or enamel are most commonly expressed realtive to Vienna Pee-Dee Belemnite (VPDB) standard, but can be expressed relative to the Vienna Standard Mean Ocean (VSMOW). Becuase of this possibility, the standard used in the source publication should always be recorded. Oxygen ratios from the phosphate fraction bioapatite or enamel are most commonly expressed realtive to the Vienna Standard Mean Ocean (VSMOW), but can be expressed relative to the Vienna Pee-Dee Belemnite (VPDB) standard. Becuase of this possibility, the standard used in the source publication should always be recorded. There are several conversions that can be done to increase the comparability of stable isotope measurements. BIAD does not record these conversions and only records original values.
Column name	Data type	Column description
206Pb/204Pb	decimal	The ratio of 206Pb/204Pb
206Pb/207Pb	decimal	The ratio of 206Pb to 207Pb
207Pb/204Pb	decimal	The ratio of 207Pb to 204Pb
207Pb/206Pb	decimal	The ratio of 207Pb to 206Pb
208Pb/204Pb	decimal	The ratio of 208Pb to 204Pb
208Pb/206Pb	decimal	The ratio of 208Pb to 206Pb
208Pb/207Pb	decimal	The ratio of 208Pb to 207Pb
API_FTIR	decimal	API index of Fourier transform infrared spectroscopy.
BPI_FTIR	decimal	BPI index of Fourier transform infrared spectroscopy.
C/C_FTIR	decimal	C/C index of Fourier transform infrared spectroscopy.
C/N_collagen	decimal	Carbon / Nitrogen Atomic ratio (C:N) of carbon and nitrogen in the collagen sample.
C/P_FTIR	decimal	C/P index of Fourier transform infrared spectroscopy.
C/S_collagen	decimal	Carbon / Sulfur Atomic ratio (C:S) of carbon and sulfur in the collagen sample.
C_collagen(%)	decimal	Percentage of carbon in the collagen sample.
CitationID	varchar
Collagen(%)	decimal	Percentage of collagen in the sample.
Error 206Pb/204Pb	decimal
Error 206Pb/207Pb	decimal
Error 207Pb tp 204Pb	decimal
Error 207Pb/206Pb	decimal
Error 208Pb/ 207Pb	decimal
Error 208Pb/204Pb	decimal
Error 208Pb/206Pb	decimal
FTIR_pre_or_post	varchar	Was the FTIR done pre or post treatment.
HumanIsoID	varchar	Primary key.
IndividualID	varchar	Unique ID for each human specimen.
IRSF	decimal	Infrared Splitting factor.
ItemID	varchar	Use SiteID as prefix, and suffix with a number starting at 101.
Material	varchar
N/S_collagen	decimal	Nitrogen / Sulfur Atomic ratio (N:S) of the nitrogen and sulfur in the collagen sample.
N_collagen(%)	decimal	Percentage of nitrogen in the collagen sample.
notes	varchar
Position	varchar	Side of the skeleton, and/or upper vs lower for teeth.
S_collagen(%)	decimal	Percentage of Sulfur in the collagen sample.
SampleID	varchar	ID provided by primary source
SampleIDother	varchar	Sometimes additional sample IDs are available, for example one from the archaeologist, another by the isotopic analyst
SequenceOrder	tinyint	Rank order of the sequence (i.e closest to the root is 1) if sequential sampling was done. NULL means there was no sequential sampling.
SkeletalElement	varchar	Name of bone or tooth. Case sensitive, as adult and milk teeth are defined by upper and lower case.
δ13C_carbonate(‰)	decimal	δ13C of the carbon in the carbonate sample, ‰.
δ13C_collagen(‰)	decimal	δ13C of the carbon in the collagen sample, ‰.
δ13C_collagenStandard	varchar	The standard against which 13C is measured.
δ15N_collagen(‰)	decimal	δ15N of the nitrogen in the collagen sample, ‰.
δ15N_collagenStandard	varchar	The standard against which 15N is measured.
δ18O_carbonate(‰)	decimal	δ18O of the carbon in the carbonate sample, ‰.
δ18O_carbonate(‰)_Standard	varchar	The standard against which d18O values are reported
δ18O_phosphate(‰)	decimal	δ18O of the carbon in the phosphate sample, ‰.
δ18O_phosphate(‰)_Standard	varchar	The stardard againt which d18O reported
δ34S_collagen(‰)	decimal	δ34S of the sulfur in the collagen sample, ‰.