Fast Determination of Manganese in Milk and Similar Infant Food Samples Using Multivariate Optimization and GF AAS

Table 3

Analytical parameters of merit.

Parameters	Units	Values
Linear range	μg L^−1	0.0–20.0
𝑟	—	0.9959 ± 0.0015
Characteristic mass^a, mo	pg	2.9 ± 0.3
Limit of detection, LD	μg L^−1	0.98 ± 0.04
Limit of detection, LD	μg kg^−1	19.6 ± 0.8
Limit of quantification, LQ	μg L^−1	3.23 ± 0.19
Limit of quantification, LQ	μg kg^−1	64.6 ± 3.8
Precision (% RSD)^b	%	2.3
Accuracy (SRM 8435)^c	μg g^−1	0.16 ± 0.04
Accuracy (SRM 1549)^d	μg g^−1	0.26 ± 0.05

^aRecommended value 2.0 pg.
^bConcentration of 10 μg L⁻¹, 𝑛=5
^cCertified value: 0.17 ± 0.05 μg g^−1
dCertified value 0.26 ± 0.06 μg g⁻¹.