Abstract
BackgroundA chromium-based metal organic framework was synthesized and employed as an efficient sorbent for pipette tip micro-solid phase extraction and preconcentration of parabens from wastewater and shampoo samples up to sub-ppb level before their spectrophotometric analysis.ResultsFactors affecting preconcentration including volume and type of solvent, amount of sorbent, number of extraction, and volume and pH of samples were optimized employing one-variable-at-a-time and response surface methodology. Obtained analytical characteristics of the method proves its usefulness for analysis of real samples. Linear range of the method for parabens was 1.0–200.0 μg/L. Detection limit of the protocol was 0.24 µg/L for propyl paraben and 0.25 µg/L for methyl paraben. Reproducibility of the protocol defined as % RSD was better than 5.78%. Synthesized adsorbent can be re-used for at least 20 extractions.ConclusionThe method showed a good detection limit and precision for determination of methyl- and propyl-paraben in wastewater and shampoo samples.
Highlights
Parabens are esters derived of p-hydroxybenzoic acid with antimicrobial properties which are in use as preservatives in personal care products, especially shampoos to prevent fungal and microbial infections
The aim of this paper is to present a simple, selective, fast and sensitive method for the extraction and preconcentration of MP and PP from wastewater and shampoo samples using a novel metal organic frameworks pipette tip micro-solid phase extraction (MOF PT-μSPE)
Using Barrett– Joyner–Halenda (BJH) technique, the specific surface area of the sorbent was determined as 2.8 × 102 m2/g
Summary
Parabens are esters derived of p-hydroxybenzoic acid with antimicrobial properties which are in use as preservatives in personal care products, especially shampoos to prevent fungal and microbial infections. One of them are parabens which may enter to wastewater from personal care products, especially shampoos, and can contaminate environment. Parabens can be released into water ecosystems mainly from personal care production plant discharges. Exposure to these compounds may cause decreased hatching in birds, fish and turtles, feminization. A chromium-based metal organic framework was synthesized and employed as an efficient sorbent for pipette tip micro-solid phase extraction and preconcentration of parabens from wastewater and shampoo samples up to sub-ppb level before their spectrophotometric analysis
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