. 2023 Oct 27;13(44):31292–31302. doi: 10.1039/d3ra06367d

Faraday cup configuration for (a) Fe isotope measurement (b) Sr isotope measurement and (c) Pb isotope measurement.

Faraday cup	L4	L3	L2	L1	Ax	H1	H2	H3	H4
(a) Fe isotope analyses
Measured element			⁵⁴Fe	⁵⁶Fe		⁵⁷Fe
Mass bias correcting element							⁶⁰Ni		⁶¹Ni
Isobaric interference	⁵³Cr^a		⁵⁴Cr

(b) Sr isotope analyses
Measured element (multidynamic measurement on Triton thermal ionisation mass spectrometer)		⁸⁴Sr		⁸⁶Sr	⁸⁷Sr	⁸⁸Sr
			⁸⁶Sr	⁸⁷Sr	⁸⁸Sr
		⁸⁶Sr	⁸⁷Sr	⁸⁸Sr
Mass bias correcting element	Corrected using multidynamic algorithm with ⁸⁶Sr/⁸⁸Sr = 0.1194
Isobaric interference			⁸⁵Rb		⁸⁷Rb

(c) Pb isotope analyses
Measured element				²⁰⁴Pb		²⁰⁶Pb	²⁰⁷Pb	²⁰⁸Pb
Mass bias correcting element			²⁰³Tl		²⁰⁵Tl
Isobaric interference		²⁰²Hg^a		²⁰⁴Hg

⁵³Cr and ²⁰²Hg were measured for the correction of the isobaric interference of ⁵⁴Cr on ⁵⁴Fe, and ²⁰⁴Hg on ²⁰⁴Pb, respectively.