Compound | Linear regressiona | Linearity (mg∙L−1) | Correlation (R2) | LODb (mg∙L−1) | RSD% (time) | RSD% (area) |
K+ | y = 10.387x + 1.146 | 0.05 - 20 | 0.9973 | 0.02 | 1.3 | 2.7 |
Ca2+ | y = 3.747x + 0.151 | 0.25 - 20 | 0.9968 | 0.1 | 2.1 | 3.6 |
Na+ | y = 4.837x + 0.766 | 0.1 - 15 | 0.9984 | 0.05 | 1.7 | 4.8 |
Sr2+ | y = 1.671x + 0.058 | 0.4 - 15 | 0.9955 | 0.2 | 2.3 | 5.1 |
Mg2+ | y = 5.076x + 0.612 | 0.1 - 20 | 0.9972 | 0.05 | 1.4 | 4.2 |