Mass fractionation of Rb and Sr isotopes during laser ablation-multicollector-ICPMS: in situ observation and correction

Journal of Analytical Science and Technology

Table 2 Er and Yb isotopic compositions and ratios reported in the literature

Amount fraction (Chang et al. 1998)
	¹⁶²Er	¹⁶⁴Er	¹⁶⁶Er	¹⁶⁷Er	¹⁶⁸Er	¹⁷⁰Er
Mean	0.001387	0.016009	0.335027	0.228691	0.269784	0.149102
Error	0.000014	0.000010	0.000104	0.000026	0.000051	0.000103
Isotopic ratio (Vervoort et al. 2004, normalized using ¹⁷²Yb/¹⁷⁴Yb = 0.68321)
	¹⁶⁸Yb/¹⁷¹Yb	¹⁷⁰Yb/¹⁷¹Yb	¹⁷²Yb/¹⁷¹Yb	¹⁷³Yb/¹⁷¹Yb	¹⁷⁶Yb/¹⁷¹Yb	¹⁷⁶Yb/¹⁷³Yb
Mean	0.008876	0.212562	1.531736	1.132338	0.901691	0.796310
Error	0.000008	0.000009	0.000046	0.000050	0.000075	0.000034