The effects of polyethersulfone and Nylon 6 micromembrane filters on the pyraclostrobin detection: adsorption performance and mechanism
- 28 May 2022
- journal article
- research article
- Published by Springer Science and Business Media LLC in Environmental Science and Pollution Research
- Vol. 29 (49), 74051-74061
- https://doi.org/10.1007/s11356-022-21021-3
Abstract
Adsorption of test substances on micromembrane filters during sample pretreatment before qualitative and quantitative analysis has greatly affected the accuracy of the measurement. In the present study, it was found that the adsorption rate of pyraclostrobin reached 77.7–100% when water samples of pyraclostrobin (1 mL) were filtered with polyethersulfone (PES) and Nylon 6 filters. Therefore, the adsorption mechanisms were investigated from the kinetics, isotherms, and thermodynamics of the pyraclostrobin adsorption process, combined with attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) analysis. The results showed that PES accorded with second-order adsorption kinetics and Nylon 6 with first-order adsorption kinetics, and the correlation coefficient R2 was 0.98. The adsorption behavior of the two micromembranes followed the linear isothermal model, indicating that the adsorption process was through monolayer adsorption. Thermodynamic study showed that the adsorption of pyracoethyl on PES membrane was spontaneous endothermic, while that on Nylon 6 was spontaneous exothermic. The π-π electron-donor-acceptor (EDA) between pyraclostrobin and PES may promote the adsorption of PES to pyraclostrobin, and hydrogen bonding between pyraclostrobin and Nylon 6 micromembrane may be involved in the adsorption. Our study also proved that the adding 60% methanol and iodine solution (2 mmol/L) was an effective strategy to reduce the adsorption effects and to increase the accuracy of the detection. Graphical abstractThis publication has 48 references indexed in Scilit:
- Removal of ethinylestradiol (EE2) from water via adsorption on aliphatic polyamidesWater Research, 2012
- Removal of pesticides from water by NF and RO membranes — A reviewDesalination, 2012
- Snails as indicators of pesticide drift, deposit, transfer and effects in the vineyardScience of The Total Environment, 2011
- Investigation of Aggregation and Assembly of Alkali Lignin Using Iodine as a ProbeBiomacromolecules, 2011
- Adsorption of estrone in microfiltration membrane filtersChemical Engineering Journal, 2010
- Adsorption of Organic Compounds by Carbon Nanomaterials in Aqueous Phase: Polanyi Theory and Its ApplicationChemical Reviews, 2010
- Initial behavior of intraparticle diffusion model used in the description of adsorption kineticsChemical Engineering Journal, 2009
- Adsorption mechanism and property of a novel adsorption material PAM/SiO2 towards 2,4,6-trinitrotolueneJournal of Hazardous Materials, 2009
- Sorption profile of Cd(II) ions onto beach sand from aqueous solutionsJournal of Hazardous Materials, 2007
- Experimental and kinetic studies on methylene blue adsorption by coir pith carbonBioresource Technology, 2007