Heavy metals | Concentration (ppm) | The concentration of each metal in quality standard (ppm) |
Fe (ppm) | 6775 | Not listed |
Cr (ppm) | 0.64465 | 0.25 |
Cu (ppm) | Not detected | 0.19 |
Pb (ppm) | 0.0219 | 2.5 |
Cd (ppm) | Not detected | 0.05 |