Open AccessA Validated SPE-UPLC-DAD Method for Quantification of Parabens in Industrial Waste Effluent Water Samples by Using Activated Carbon Nanofiber Modified Filter Paper
Author(s) -
Eegala Bheema Shankar,
Challa Gangu Naidu,
Ch. Naveen Kumar,
Kasturi Rajashekhar
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23012
Subject(s) - chemistry , chromatography , detection limit , adsorption , solid phase extraction , desorption , activated carbon , high performance liquid chromatography , column chromatography , extraction (chemistry) , organic chemistry
The present work describes a sensitive, simple, cost-effective and fast analytical procedure to detectthe parabens in industrial waste effluent water samples using novel activated carbon nanofiber (CNF)modified filter paper based solid phase extraction technique coupled with liquid chromatography withphotodiode array detector (UPLC-PDA). The carbon nanofiber coated filter paper was used as anadsorbent and also characterized by field emission scanning electron microscope (FESEM) showedsuperior porous structure. Various factors effecting the adsorption and desorption process were studied.The optimum parameters which improve the efficiency are paper length 1 cm × 2 cm, adsorption time15 min, eluent methanol, eluent volume 5 mL, sample pH 7, desorption time 2 min, 2% salt additionand 300 rpm stirring rate respectively. The parabens exhibited superior linearity ranging from 0.1-50ng mL-1. The regression coefficient (R2) value ranging from 0.9981-0.9989. This method exhibitedgood sensitivity with the quantification limit (LOQ) between 0.5-0.75 ng mL-1 and detection limit(LOD) over the range of 0.1-0.25 ng mL-1. The precision was expressed from the RSDs values from0.74-0.97 %. The spiked analytes revealed excellent recoveries in the range of 95.30-116.72 % withRSD less than 5.72 % for all the water samples also applied for real samples.