Quantification overview for SLRS-6 for both external calibration and standard addition using conventional solution nebulization (SN) and desolvated sample introduction (Des). All values are reported in μg kg⁻¹. The mass fractions of Be, Se, Ag, Cd, Te, and Bi were below their respective LOQ in all setups and could thus not be quantified.

Quantified isotope	Reference		SN ext. cal.		SN std. add.		Des ext. cal		Des std. add.
	Mean	2SD	Mean	2SD	Mean	2SD	Mean	2SD	Mean	2SD
7Li	0.53a		—c		—c		0.54	0.06	0.47	0.05
11B	7.39a		7.8	0.4	5.69	0.20	—c		—c
23Na	2770	220	2860	60	—d		2610	90	—d
24Mg	2140	60	2250	30	—d		2050	50	—d
25Mg	2140	60	2260	50	—d		2060	70	—d
27Al	33.9	2.2	33.6	0.6	32.5	0.8	31.9	0.3	33.3	0.4
39K	650	50	670	12	—d		614	14	—d
40Ca	8770	200	8710	130	—d		8700	160	—d
41K	650	50	648	10	—d		620	30	—d
51V	0.352	0.006	0.351	0.024	0.362	0.016	0.361	0.014	0.351	0.008
52Cr	0.252	0.012	0.255	0.012	0.234	0.012	0.249	0.005	0.236	0.008
53Cr	0.252	0.012	0.24	0.04	0.24	0.05	0.251	0.020	0.227	0.008
55Mn	2.12	0.10	2.13	0.06	1.972	0.014	2.10	0.08	1.93	0.06
56Fe	85	4	84.1	1.8	82.5	1.4	81	3	78.1	2.6
57Fe	85	4	86.0	1.6	86.7	1.0	90	6	87.5	2.6
59Co	0.053b	0.012	0.074	0.012	0.072	0.002	0.065	0.006	0.057	0.004
60Ni	0.617	0.022	0.59	0.05	0.66	0.02	0.64	0.03	0.676	0.024
62Ni	0.617	0.022	0.58	0.16	0.61	0.04	0.63	0.03	0.61	0.03
63Cu	24.0	1.8	22.5	0.3	22.0	0.4	24.1	0.6	22.3	0.6
64Zn	1.76	0.12	1.84	0.12	1.85	0.10	1.73	0.12	1.84	0.10
65Cu	24.0	1.8	22.8	0.3	21.17	0.22	23.8	0.8	21.6	0.6
66Zn	1.76	0.12	1.81	0.14	1.85	0.05	1.75	0.12	1.83	0.14
75As	0.57	0.08	0.57	0.03	0.51	0.04	0.53	0.03	0.518	0.026
85Rb	1.41a		1.41	0.05	1.34	0.03	1.43	0.03	1.280	0.016
88Sr	40.7	0.3	37.2	0.6	38.8	0.4	37.5	1.2	38.7	0.8
95Mo	0.215	0.018	0.296	0.015	0.208	0.014	0.201	0.008	0.196	0.006
98Mo	0.215	0.018	0.198	0.022	0.194	0.016	0.198	0.012	0.192	0.010
121Sb	0.338	0.006	0.357	0.016	0.314	0.014	0.354	0.020	0.308	0.014
137Ba	14.3	0.5	14.4	0.4	13.4	0.4	14.5	0.4	13.2	0.5
138Ba	14.3	0.5	14.9	0.4	13.8	0.5	14.2	0.8	13.4	0.6
205Tl	0.0085a		0.0093	0.0018	—c		0.0062	0.0005	0.0067	0.0014
208Pb	0.170	0.026	0.163	0.014	0.165	0.006	0.161	0.014	0.154	0.005
238U	0.070	0.003	0.0686	0.0024	0.073	0.004	0.070	0.003	0.0615	0.0012

^aFrom GeoReM database.⁴⁴

^bNot certified.

^cBelow LOQ.

^dNot determined.