almost significantlyP = 0.08
Minimum 87 Sr/ 86 Sr values were almost significantly lower for LA-MC-ICP-MS (0.7096 ± 0.0008 SD) than for solution (0.7099 ± 0.0008 SD; Wilcoxon signed-rank test: n = 20, Z = 1.82, P = 0.08) and maximum 87 Sr/ 86 Sr values were significantly higher (respectively 0.7115 ± 0.0015 SD and 0.7108 ± 0.0011 SD; n = 20, Z = − 2.55, P < 0.05).