Sample

Al^a

Zn^a

C^a

H^a

N^a

Zn²⁺/Al^3+b

ZnAlph

6.06

25.08

22.89

4.17

4.59

1.58

ZnAlc

6.20

26.24

21.38

3.59

0.22

1.75

ZnAlOTA

7.67

27.63

2.82

2.90

5.37

1.50