Table 1.
Summary of the lines and the average mass fractions of the nutrients determined by reference analytics ICP-OES, signal-to-noise ratios of very weak lines in parentheses.
| Nutrients | Observed Lines, λ/nm | Average Mass Fractions/ppm |
|---|---|---|
| Ca | 315.9, 317.9, 370.6, 373.7, 393.3, 396.8, 422.7, 430.2, 443.5, 445.5, 518.9, 527.0, 551.4, 558.9, 585.8, 610.3, 612.2, 616.2, 643.9, 646.2, 649.4, 849.8 (3), 854.2 | 4950 |
| K | 404.6, 691.1 (2), 693.9 (4), 766.5, 769.9 | 1280 |
| Mg | 278.0, 279.5, 280.2, 285.2, 333.5 | 1450 |
| N | 746.8 (5), 821.6 (4), 868.3 (4) | 917 |
| P | 213.6 (<2), 547.7 (<2) | 372 |
| Fe | 193.6 (<2), 239.5, 248.8, 272.7 (3), 274.9, 301.8 (<2), 321.7 (2), 358.6 (4), 374.2, 405.5, 428.5, 438.4 | 10400 |
| Mn | 259.3, 279.8, 293.7, 294.8, 322.9 (4), 324.2, 344.1, 346.1, 403.3, 408.3, 476.3 (4), 478.4 (4), 482.4 (5) | 249 |
| C | 193.1 (5), 247.8 | |
| Al | 220.8, 221.1, 226.4 (2), 226.9 (3), 236.7, 237.3, 256.8, 257.5, 265.2 (3), 266 (4), 308.2, 309.3, 394.4, 396.2 | 6450 |