Optimization of effervescent tablet-assisted dispersive liquid-liquid microextraction with central composite design for preconcentration of stimulant drug
The extraction efficiency of stimulant drug, namely caffeine, was investigated using a 23 central composite design. The values of optimum extraction condition were set at 468 µL of 1-dodecanol, 1 piece of effervescent tablet, and 22 °C of extraction temperature. An enrichment factor was calcul...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2021
|
| Online Access: | http://journalarticle.ukm.my/16397/1/12.pdf http://journalarticle.ukm.my/16397/ https://www.ukm.my/jsm/malay_journals/jilid50bil1_2021/KandunganJilid50Bil1_2021.html |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | The extraction efficiency of stimulant drug, namely caffeine, was investigated using a 23
central composite design. The
values of optimum extraction condition were set at 468 µL of 1-dodecanol, 1 piece of effervescent tablet, and 22 °C
of extraction temperature. An enrichment factor was calculated as 72 for 80 mL water sample. The run time was
conducted in less than 6 min using a non-polar C18 column and an isocratic mobile phase (methanol: water of 40:60
(v/v)) at a controlled flow rate of 1 mL min-1. A good linear response was achieved in the range of 0.01-0.50 µg mL-1 (R2
> 0.998). Detection and quantification limits were calculated at 0.009 and 0.015 µg mL-1, respectively. The average
recoveries at two spiking concentration levels were within the range of 75-105% with RSD < 2% (n = 3). Real samples
namely beverages which contained caffeine and river water were tested using the proposed method, and the results
ranged 0.021-0.56 µg mL-1. The eco-scale score and green analytical procedure index confirmed the greenness profile
of the proposed method through a calculated score of 88 and has 6 green criteria, respectively. |
|---|