Method/Reagent

Amount µg・ml^-1

RSD %

Recovery %

C.L^b

Taken

Found ± SD^a

Cu(II)

Intraday assay

32.062

53.437

64.124

31.929 ± 0.11

51.777 ± 0.13

63.532 ± 0.20

0.34

0.25

0.31

99.585

96.894

99.076

±0.137

±0.162

±0.249

Intreday assay

32.062

53.437

64.124

31.166 ± 0.12

52.54 ± 0.15

63.838 ± 0.19

0.39

0.29

0.30

97.205

98.321

99.554

±0.149

±0.186

±0.236

KMnO₄

Intraday

16.031

26.719

32.062

16.001 ± 0.05

26.205 ± 0.07

32.395 ± 0.11

0.31

0.27

0.34

99.813

98.076

101.039

±0.062

±0.087

±0.137