|
Standard
|
Unseparated samplea
|
Post-separationb
|
‰ correction fromc
|
δ138Ba
|
|---|
|
LaT/BaT
|
CeT/BaT
|
LaT/BaT
|
CeT/BaT
|
La
|
Ce
|
|---|
|
BCR-2
|
0.037
|
0.078
|
0.000013
|
0.00011
|
− 0.00002
|
0.00211
|
0.080 ± 0.029
|
| | |
0.000013
|
0.00011
|
− 0.00002
|
0.00209
|
0.071 ± 0.026
|
|
AGV-1
|
0.032
|
0.056
|
0.000011
|
0.000048
|
− 0.00001
|
0.00090
|
0.067 ± 0.030
|
|
M4TFA0518d
|
n/a
|
n/a
|
0.000018
|
0.000034
|
− 0.00002
|
0.00064
|
0.948 ± 0.034
|
| | |
0.000018
|
0.000034
|
− 0.00002
|
0.00064
|
0.936 ± 0.037
|
| | |
0.000018
|
0.000035
|
− 0.00002
|
0.00066
|
0.902 ± 0.033
|
|
SRM 3104a
|
n/a
|
n/a
|
0.0000053
|
0.0000016
|
− 0.00001
|
0.00003
| |
- n/a no data available
- aRatio of total La or Ce to Ba in unseparated sample based on values reported by Raczek et al. [37]
- bRatio of total La or Ce to Ba in separated Ba cut based on MC-ICPMS measured intensity of 138Ba, 139La, and 140Ce
- cTotal correction applied to δ138Ba value (per mil) from measured 139La and 140Ce during analysis
- dInternal lab standard—Marcellus Shale gas well produced water
