Molecularly imprinted ormosil as a sorbent for targeted dispersive solid phase micro extraction of pyriproxyfen from strawberry samples

Muhammad Hayat; Suryyia Manzoor; Hina Raza; Muhammad Imran Khan; Abdallah Shanableh; Muhammad Sajid; Tahani Mazyad Almutairi; Rafael Luque

doi:10.1016/j.chemosphere.2023.137835

Molecularly imprinted ormosil as a sorbent for targeted dispersive solid phase micro extraction of pyriproxyfen from strawberry samples

Chemosphere. 2023 Apr:320:137835. doi: 10.1016/j.chemosphere.2023.137835. Epub 2023 Jan 24.

Authors

Muhammad Hayat¹, Suryyia Manzoor², Hina Raza³, Muhammad Imran Khan⁴, Abdallah Shanableh⁵, Muhammad Sajid⁶, Tahani Mazyad Almutairi⁷, Rafael Luque⁸

Affiliations

¹ Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan. Electronic address: choudary151@gamil.com.
² Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan. Electronic address: Suryyia878@gmail.com.
³ Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan. Electronic address: hinaraza@bzu.edu.pk.
⁴ Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah, 27272, United Arab Emirates. Electronic address: raoimranishaq@gmail.com.
⁵ Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah, 27272, United Arab Emirates. Electronic address: Shanableh@sharjah.ac.ae.
⁶ Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan. Electronic address: msajidkang@gmail.com.
⁷ Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
⁸ Departamento de Química Orgánica Universidad de Córdoba, Edificio Marie Curie (C 3), Campus de Rabanales, Ctra Nnal IV-A, Km 396, E14014, Córdoba, Spain; Universidad ECOTEC, Km. 13.5 Samborondón, Samborondón, EC092302, Ecuador.

PMID: 36702413
DOI: 10.1016/j.chemosphere.2023.137835

Abstract

Novel molecularly imprinted organically modified silica was prepared by reacting acrylamide and 3-(tri-methoxysilyl) propyl methacrylate followed by condensation and hydrolysis with tetraethyl ortho-silicate for the determination of pyriproxyfen. The sorbent proved to be highly selective for the template molecule, pyriproxyfen. The characterization of sorbent was carried out using SEM, BET and TGA. The prominent peaks in FTIR at 3700 cm^-1 and 1071 cm^-1 confirmed the stretching of amide group's N-H and Si-O-Si bond linkage of MI_Ormosil. The pseudo-first-order model (R² 0.99) described the adsorption kinetics of the MI_Ormosil, whereas among adsorption isotherms, Freundlich model showed the best fit (R² 0.99). The molecularly imprinted silica was applied for the determination of target analytes from strawberries sample using dispersive solid-phase micro extraction (DSPME) followed by high-performance liquid chromatography (HPLC). The LOD (4.93 x10^-5 μg mL^-1) and LOQ (1.49 x10^-4 μg m-¹) values were calculated by signal to noise ratio through HPLC. Results show that the maximum binding capacity and percentage recovery values of MI_Ormosil were 13 mg g^-1 (n = 5) and 97.3% respectively.

Keywords: DSPME; Molecularly imprinted ormosil; Pyriproxyfen; Response surface methodology; Strawberries samples.

MeSH terms

Adsorption
Chromatography, High Pressure Liquid / methods
Fragaria*
Molecular Imprinting* / methods
Polymers / chemistry
Silicon Dioxide / chemistry
Solid Phase Extraction / methods

Substances

ormosil
pyriproxyfen
Polymers
Silicon Dioxide