S. No.
Metal ion (50 µM)
Relative error
1 Mn \(0.88\pm 0.002\)
2 Fe \(2.68\pm 0.019\)
3 Co \(5.45\pm 0.047\)
4 Ni \(2.09\pm 0.008\)
5 Cu \(3.42\pm 0.021\)
6 Zn \(1.6\pm 0.006\)
7 Ca \(3.27\pm 0.028\)
8 Mg \(0.37\pm 0.001\)