Table 2.
Analytical methods results
| Elements | R2 values | Regression equation | LOD (µg L−1) | LOQ (µg L−1) | Recovery (1640 A) | %RSD |
|---|---|---|---|---|---|---|
| Cu | 0.9988 | y = 2444.2x − 631.23 | 3.73 | 12.43 | 102 ± 1.5 | 1.4 |
| Cr | 0.9978 | y = 3894.5x − 5738 | 2.73 | 9.11 | 90 ± 2.3 | 2.5 |
| Co | 0.9996 | y = 4473.2x + 185.23 | 1.01 | 3.37 | 112 ± 1.7 | 1.5 |
| Ni | 0.9994 | y = 1096.7x − 1376.3 | 2.05 | 6.84 | 89 ± 2.7 | 3.1 |
| Ba | 0.9992 | y = 8644.9x − 14,357 | 5.55 | 18.50 | 99 ± 1.2 | 1.2 |
| Se | 0.9996 | y = 61.135x + 9.8266 | 2.53 | 8.44 | 101 ± 4.2 | 4.2 |
| As | 0.9995 | y = 585.76x − 32.089 | 1.05 | 3.51 | 106 ± 4.4 | 4.1 |
| Pb | 0.9991 | y = 9078.3x − 4555 | 1.13 | 3.78 | 100 ± 3.2 | 3.1 |
| Cd | 0.9970 | y = 743.53x − 77.149 | 0.50 | 1.68 | 88 ± 4.3 | 4.7 |
| V | 0.9995 | y = 3996.1x + 350.98 | 1.25 | 4.15 | 105 ± 2.8 | 2.6 |
| Zn | 0.9990 | y = 398.72x − 346.63 | 2.68 | 8.94 | 93 ± 1.6 | 1.7 |
LOD limit of derection; LOQ limit of quantification; %RSD relative standard deviation