Strategies to improve the challenges of classic dispersive liquid-liquid microextraction for determination of the parabens in personal care products-One step closer to green analytical chemistry

2021 ◽  
Vol 1183 ◽  
pp. 122973
Author(s):  
Razieh Azizi Nezami ◽  
Mohammad Saber Tehrani ◽  
Hakim Faraji ◽  
Syed Waqif Husain ◽  
Parviz Aberoomand Azar
Keyword(s):  
Analytical Chemistry ◽  
Personal Care Products ◽  
Personal Care ◽  
Green Analytical Chemistry ◽  
One Step ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

scholarly journals Determination of Eugenol in Personal-Care Products by Dispersive Liquid-Liquid Microextraction Followed by Spectrophotometry Using p-Amino-N,N-dimethylaniline as a Derivatizing Agent

2020 ◽  
Vol 21 (1) ◽  
pp. 192
Author(s):  
Bahaa Malik Altahir ◽  
Omar Abdulazeez ◽  
Sarmad Bahjat Dikran ◽  
Keith Edward Taylor
Keyword(s):  
Oxidative Coupling ◽  
Extraction Procedure ◽  
Personal Care Products ◽  
Calibration Plot ◽  
Personal Care ◽  
Derivatizing Agent ◽  
Colored Product ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Two simple methods for the determination of eugenol were developed. The first depends on the oxidative coupling of eugenol with p-amino-N,N-dimethylaniline (PADA) in the presence of K3[Fe(CN)6]. A linear regression calibration plot for eugenol was constructed at 600 nm, within a concentration range of 0.25-2.50 μg.mL–1 and a correlation coefficient (r) value of 0.9988. The limits of detection (LOD) and quantitation (LOQ) were 0.086 and 0.284 μg.mL–1, respectively. The second method is based on the dispersive liquid-liquid microextraction of the derivatized oxidative coupling product of eugenol with PADA. Under the optimized extraction procedure, the extracted colored product was determined spectrophotometrically at 618 nm. A linear plot within a concentration range of 0.05–1.65 μg.mL–1 (r = 0.9997) was constructed. The LOD and LOQ were 0.053 and 0.177 μg.mL–1, respectively. Both methods were tested for the analysis of eugenol in commercial personal-care products, and the results confirmed that the procedures are accurate, precise, and reproducible (RSD < 1%).

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