Sample

Time

(min)

Ratio of peel tangerine extract to silver nitrate solution

2:1

1:1

1:2

λ_max

Absorbance

λ_max

Absorbance

λ_max

Absorbance

1

0

-

-

-

-

-

-

15

428

0.255

431

0.341

428

0.451

30

435

0.514

428

0.677

419

0.919

45

435

0.692

431

0.754

435

1.088

2

0

-

-

-

-

-

-

15

425

0.242

419

0.396

419

0.416

30

433

0.479

431

0.690

430

0.949

45

431

0.676

431

0.811

433

1.086

3

0

-

-

-

-

-

-

15

422

0.273

431

0.416

431

0.436

30

419

0.582

428

0.705

425

1.060

45

435

0.715

419

0.819

422

1.181