Titanium dioxide nanotubes for solid phase extraction of benzoylurea insecticides in environmental water samples, and determination by high performance liquid chromatography with UV detection

Huang, Yunrui; Zhou, Qingxiang; Xie, Guangyuan; Liu, Haijin; Lin, Haiying

doi:10.1007/s00604-010-0472-4

Cited by 47 publications

(18 citation statements)

References 35 publications

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“…Similarly, the bond lengths between P 19 -S 20 in the triazophos molecule is the longest with the value of 1.85680 × 10 −10 m, followed by the bond lengths between P 19 -O 18 , P 19 -O 21 and P 19 -O 22 with the same value of 1.76000 × 10 −10 m. According to negative correlation between bond energy and bond length [49], the above longer bonds tend to cleave when attacked by ROS. This means the P 13 -O 12 bond in the profenofos molecule and the P 19 -O 18 bond in triazophos molecules are attacked first, leading to the P 13 14 1.45200 C 16 -C 17 1.50715 P 13 -O 26 1.76000 C 17 -C20 1.50713 P 13 -O 12 1.76000 O 26 -C 27 1.43000 P 13 -S 15 2.11000 C 27 -C 28 1.50025 C 16 -S 15 1.78000 O 12 -C 3 1.43000 C 3 -C 4 1.39543 C 1 -C 2 1.39516 C 4 -C 5 1.39483 C 2 -Cl 11 1.76000 C 5 -C 6 1.39514 C 2 -C 3 1.39471 C 6 -Br 10 1.91000 C 6 -C 1 1.39483…”

Section: Degradation Byproducts and Molecular Structurementioning

confidence: 99%

“…The degradation efficiency of profenofos and triazophos reached 53.3% and 32.1% after 1 d, respectively. As a promising material, nano-sized TiO2 makes a great contribution to sustainable agriculture concerning plant germination and growth [25,26], degradation of pesticides [27], residue detection [28,29], managing diseases and enhancing crop yields [30]. Regarding rapid degradation of organophosphorus pesticides residuals in vegetables using TiO2 in field conditions, Zeng et al found that degradation of chlorpyrifos and acephate in tomato leaves increased significantly with rare-earth RE 3+ -doped nano-TiO2 [31], and Liu et al drew a consistent conclusion that the degradation of acephate and dimethoate in Bok choy accelerated remarkably with TiO2/Ce [23,24].…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

et al. 2019

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Pesticides have revolutionized the modern day of agriculture and substantially reduced crop losses. Synthetic pesticides pose a potential risk to the ecosystem and to the non-target organisms due to their persistency and bioaccumulation in the environment. In recent years, a light-mediated advanced oxidation processes (AOPs) has been adopted to resolve pesticide residue issues in the field. Among the current available semiconductors, titanium dioxide (TiO2) is one of the most promising photocatalysts. In this study, we investigated the photocatalytic degradation of profenofos and triazophos residues in Chinese cabbage, Brassica chinensis, using a Cerium-doped nano semiconductor TiO2 (TiO2/Ce) under the field conditions. The results showed that the degradation efficiency of these organophosphate pesticides in B. chinensis was significantly enhanced in the presence of TiO2/Ce. Specifically, the reactive oxygen species (ROS) contents were significantly increased in B. chinensis with TiO2/Ce treatment, accelerating the degradation of profenofos and triazophos. Ultra-performance liquid chromatography–mass spectroscopy (UPLC-MS) analysis detected 4-bromo-2-chlorophenol and 1-phenyl-3-hydroxy-1,2,4-triazole, the major photodegradation byproducts of profenofos and triazophos, respectively. To better understand the relationship between photodegradation and the molecular structure of these organophosphate pesticides, we investigated the spatial configuration, the bond length and Mulliken atomic charge using quantum chemistry. Ab initio analysis suggests that the bonds connected by P atom of profenofos/triazophos are the initiation cleavage site for photocatalytic degradation in B. chinensis.

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Section: Degradation Byproducts and Molecular Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

et al. 2019

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“…In-syringe-DLLME-DSIL a -HPLC-UV Honey 2-300 0.21-0.42 1.3-2.6 [28] β-CD/ATP-d-μ-SPE b -HPLC-UV Honey 20-10000 0.2-1.0 3.2-6.8 [29] SPME-HPLC-PIF-FD c Orange juice 1.0-125.0 0.05-0.07 <8 [30] IL-β-CD/ATP-d-μ-SPE d -HPLC-DAD Honey and Tea beverages 5-500 0.14-0.21 2.2-3.8 [6] PVDF-TFME e -HPLC-DAD Water 0.5-50.0 0.1 4.3-6.5 [31] TiO 2 nanotube-SPE f -HPLC-UV Water 0.2-40 0.06-0.21 1.1-8.7 [32] HBPE-d-μ-SPE g -HPLC Water 5-25000 0.02-0.06 4.5-8.7 [19] h…”

Section: Methods Sample Linearity Range ( G/l) Lod ( G/l) Rsd (%) Refementioning

confidence: 99%

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe₃O₄‐hyperbranched polyester magnetic composite as sorbent

Liu

Marriott

et al. 2019

J of Separation Science

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In this work, a method for the analysis of benzoylurea insecticides, including hexaflumuron, flufenoxuron, lufenuron and chlorfluazuron, in tea samples by highperformance liquid chromatography with Fe 3 O 4 -hyperbranched polyester nanocomposite as the adsorbent for magnetic solid-phase extraction was developed. The magnetic nanocomposite was prepared and characterized by infrared spectroscopy, vibrating sample magnetometry, and scanning electron microscopy. The as-prepared nanocomposite was used as a sorbent for the extraction and preconcentration of pesticide residues in tea samples. The extraction and desorption conditions, including mass ratios of raw materials, amount of sorbent, pH value, extraction time, and desorption time, were investigated. Under the final conditions chosen for the analysis, good linearity was obtained for all the tested compounds, with R 2 values of at least 0.9979. The limits of detection were determined in the range of 0.15-0.3 μg/L. The recovery obtained from the analysis of tea samples with various spiked concentrations was between 90.7 and 98.4%, with relative standard deviations (n = 4) lower than 4.1%. Furthermore, the present approach was successfully applied to the quantitative determination of residues of benzoylurea insecticides in real samples. K E Y W O R D Sbenzoylurea insecticides, high-performance liquid chromatography, hyperbranched polyester, magnetic solid-phase extraction, tea samples 1610

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“…However, it should have much higher adsorption capacity and much greater potential for the trapping of compounds because it has a larger surface area [194]. For example, organophosphorus pesticides in water samples [194], benzoyl-urea insecticides [195] and polychlorinated biphenyls [196] in environmental water samples were extracted by SPE using TiO2-NTs as SPSs. In µSPE, TiO2-NTs were used to extract pyrethroid pesticides [46] and organochlorine pesticides [47] in water samples.…”

Section: Other Metallic Nanoparticlesmentioning

confidence: 99%

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Wen

Chen

et al. 2014

TrAC Trends in Analytical Chemistry

330

123

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A B S T R A C TSample preparation is a crucial bottleneck in the whole analytical process. Solid-phase sorbents (SPSs) have aroused increasing interest in research on sample preparation, as they have key roles in obtaining high clean-up and enrichment efficiency in the analysis of trace targets present in complex matrices. The objective of this review is to provide a broad overview of the recent advances and applications of SPSs in sample preparation prior to chromatographic analysis, during the period 2008-13. We include SPSs, such as molecularly-imprinted polymers, carbon nanomaterials, metallic nanoparticles and metal organic frameworks, focusing on solid-phase extraction, solid-phase microextraction, matrix solid-phase dispersion and stir-bar sorptive extraction of typical pollutants in environmental, biological, food and pharmaceutical samples. We propose remaining challenges and future perspectives to improve development of new SPSs and to apply them further.

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Titanium dioxide nanotubes for solid phase extraction of benzoylurea insecticides in environmental water samples, and determination by high performance liquid chromatography with UV detection

Cited by 47 publications

References 35 publications

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe₃O₄‐hyperbranched polyester magnetic composite as sorbent

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

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Titanium dioxide nanotubes for solid phase extraction of benzoylurea insecticides in environmental water samples, and determination by high performance liquid chromatography with UV detection

Cited by 47 publications

References 35 publications

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe3O4‐hyperbranched polyester magnetic composite as sorbent

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

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Product

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Magnetic solid‐phase extraction of benzoylurea insecticides in tea samples with Fe₃O₄‐hyperbranched polyester magnetic composite as sorbent