WHAT

DF

E/mV

Log [NH₃-N]

[NH₃-N] mg/L

Blank

1

196.9

−2.6

0.003

0.1 mg/L ind

1

103.3

−0.95

0.112

Sample

1

49.3

0

1.001

Sample Dup

1

52.0

−0.05

0.897

Spike

1

35.2

0.25

1.774

Spike Dup

1

34.4

0.26

1.832

Ave

0.95

Precision

10.96

Spike amount

0.1

Recov 1

%1

0.773

77.3

0.1 mL × 1000 mg/L is 0.1 mg; in 100 mL

Recov 2

0.831

%2

83.1