MIL-101(Fe)@TiO2 nanotube composite material is used for the solid phase extraction of non-steroidal anti-inflammatory drugs under the synergy of multiple interactions
Abstract:Increasing the adsorption sites and effective interactions between sorbents and the targets can improve the solid-phase extraction (SPE) efficiency. Herein, based on the advantages of MOFs and TiO2 nanotubes (TiO2...
“…The resulting solution was filtered through a 0.45 mm PTFE filter and injected into the HPLC system. Before reused, the sorbent was washed with 10 mL of deionized water and 10 mL of methanol respectively to ensure that there is no residual BUs [29].…”
A fast and effective analytical method with biomass solid‐phase microextraction sorbent combined with a high‐performance liquid chromatography‐ultraviolet detector was proposed for the determination of benzoylurea (BU) insecticides in tea products. The novel sorbent was prepared by activating and then carbonizing water hyacinth with a fast growth rate and low application value as raw material and showed a high specific surface area and multiple interactions with analytes, such as electrostatic action, hydrogen bonding, and π‐π conjugation. After optimizing the three most important extraction parameters (pH [X1], sample loading rate [X2], and solution volume [X3]) by Box‐Behnken design, the as‐established analytical method showed good extraction performance: excellent recovery (80.13%–106.66%) and wide linear range (1–400 µg/L) with a determination coefficient of 0.9992–0.9999, a low limit of detection of 0.02–0.1 µg/L and the satisfactory practical application results in tea products. All these indicate that the water hyacinth‐derived material has the potential as a solid‐phase extraction sorbent for the detection and removal of BU insecticides from tea products, and at the same time, it can also achieve the effect of rational use of biological resources, maintaining ecological balance, turning waste into treasure, and achieving industrial production.
“…The resulting solution was filtered through a 0.45 mm PTFE filter and injected into the HPLC system. Before reused, the sorbent was washed with 10 mL of deionized water and 10 mL of methanol respectively to ensure that there is no residual BUs [29].…”
A fast and effective analytical method with biomass solid‐phase microextraction sorbent combined with a high‐performance liquid chromatography‐ultraviolet detector was proposed for the determination of benzoylurea (BU) insecticides in tea products. The novel sorbent was prepared by activating and then carbonizing water hyacinth with a fast growth rate and low application value as raw material and showed a high specific surface area and multiple interactions with analytes, such as electrostatic action, hydrogen bonding, and π‐π conjugation. After optimizing the three most important extraction parameters (pH [X1], sample loading rate [X2], and solution volume [X3]) by Box‐Behnken design, the as‐established analytical method showed good extraction performance: excellent recovery (80.13%–106.66%) and wide linear range (1–400 µg/L) with a determination coefficient of 0.9992–0.9999, a low limit of detection of 0.02–0.1 µg/L and the satisfactory practical application results in tea products. All these indicate that the water hyacinth‐derived material has the potential as a solid‐phase extraction sorbent for the detection and removal of BU insecticides from tea products, and at the same time, it can also achieve the effect of rational use of biological resources, maintaining ecological balance, turning waste into treasure, and achieving industrial production.
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