Interferent

I

II

III

Glycine

6.8 × 10−3

1.5 × 10−3

2.2 × 10−3

Arginin

5.8 × 10−3

1.0 × 10−3

1.9 × 10−3

Sodium glutmate

1.4 × 10−2

5.2 × 10−3

6.3 × 10−3

Ephedrine

1.4 × 10−2

5.2 × 10−3

6.3 × 10−3

Pilocarpine

2.4 × 10−2

2.9 × 10−3

3.5 × 10−3

Atropine

2.6 × 10−2

1.0 × 10−2

1.2 × 10−2

Quinine

2.8 × 10−1

2.2 × 10−1

2.3 × 10−1

Caffeine

2.0 × 10−3

4.3 × 10−4

5.9 × 10−4

KCL

1.37 × 10−4

1.68 × 10−4

1.62 × 10−4

NaNO3

4.99 × 10−5

6.23 × 10−5

6.33 × 10−5

LiNO3

3.23× 10−5

4.21 × 10−5

4.67 × 10−5

CaCl2

2.96 × 10−5

3.7 × 10−5

2.51 × 10−5

Mg(NO3)2

2.02 × 10−5

2.66 × 10−5

2.15 × 10−5

NH4NO3

3.13 × 10−5

4.64 × 10−5

4.65 × 10−5

Ba(NO3)2

1.83 × 10−5

2.15 × 10−5

1.59 × 10−5