. 2026 May 2;418(14):4481–4495. doi: 10.1007/s00216-026-06539-6

Table 1.

Abundance of individual Ni isotopes in ⁶¹Ni-enriched Ni metal powder (A_enriched) according to the certificate provided by Trace Sciences International, compared to the representative natural Ni isotopic composition (A_natural) according to the International Union of Pure and Applied Chemistry (IUPAC) [45, 46]

Isotope	⁵⁸Ni	⁶⁰Ni	⁶¹Ni	⁶²Ni	⁶⁴Ni
A_enriched/%	1.6700	4.9700	91.1000 ± 0.5000	2.1900	0.1700
A_natural/%	68.0769 ∓ 0.0190	26.2231 ∓ 0.0150	1.1399 ∓ 0.0013	3.6345 ∓ 0.0040	0.9256 ∓ 0.0019