PMID- 36222256
OWN - NLM
STAT- MEDLINE
DCOM- 20221013
LR  - 20221025
IS  - 1872-2059 (Electronic)
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 40
IP  - 10
DP  - 2022 Oct
TI  - [Polyamidoamine dendrimer-functionalized silica nanocomposite with polydopamine 
      coating for dispersive micro solid-phase extraction of benzoylurea insecticides 
      in water samples].
PG  - 929-936
LID - 10.3724/SP.J.1123.2022.03012 [doi]
AB  - Pesticides are used in the agricultural production process to ensure the yield 
      and quality of agricultural products. However, in recent years, environmental 
      pollution issues caused by pesticide residues have sparked widespread concern in 
      society. It is important to develop convenient and efficient approaches to detect 
      and monitor pesticide residues. In this study, targeting benzoylurea insecticides 
      (BUs), polyamidoamine dendrimer-functionalized silica nanocomposite with 
      polydopamine coating (SiO(2)-PAMAM-PDA) was designed and successfully 
      synthesized. First, monodisperse silica nanoparticles were prepared by the 
      hydrolysis of tetraethyl orthosilicate (TEOS) in mixed solution of ethanol, water 
      and ammonia. The silane coupling agent (3-aminopropyl)triethoxysilane was then 
      employed to introduce amino groups into the silica. Silica with the zeroth 
      generation of polyamidoamine (PAMAM) modification (SiO(2)-PAMAM-G0) was obtained 
      through Michael addition reaction of methyl acrylate. Ethylenediamine was added 
      to polymerize with methyl acrylate using an amidation reaction to form the 
      first-generation PAMAM (SiO(2)-PAMAM-G1). Finally, by polymerizing dopamine under 
      alkaline conditions (pH=8.5), the SiO(2)-PAMAM-G1 was coated with PDA. Thus, the 
      final product named SiO(2)-PAMAM-PDA was obtained. The composite was 
      characterized using a transmission electron microscope (TEM) and an increase in 
      surface roughness indicated the successful grafting of PDA coating. Dopamine 
      structure contains abundant benzene rings and amino and hydroxyl groups. It could 
      bind with BUs through multiple secondary interactions, such as hydrogen bond and 
      pi-pi stacking interaction. Therefore, the introduction of PDA could effectively 
      enhance the affinity of the material toward benzoylurea insecticides. The 
      prepared nanocomposites were used as sorbents in a dispersive micro solid-phase 
      extraction approach (D-mu-SPE). The established approach was employed to extract 
      and enrich the BUs in water samples before high-performance liquid chromatography 
      (HPLC) analysis. Diflubenzuron, triflumuron, hexaflumuron, and teflubenzuron were 
      chosen as target analytes. The following was a typical D-mu-SPE procedure. The 
      prepared adsorbents measuring 40 mg were first dispersed in an 8-mL sample 
      solution containing 150 g/L NaCl. The dispersion was assisted by 120-s vortexing 
      to ensure full contact between the SiO(2)-PAMAM-PDA and the targets. Next, the 
      adsorbents were separated from the liquid phase by 4-min centrifugation (5000 
      r/min). Thereafter, the adsorbed benzoylureas were eluted using 1 mL acetonitrile 
      as desorption solvent by 120-s vortexing. Separated by centrifugation, the eluate 
      was dried under a mild nitrogen stream. The solid remains were redissolved in 0.1 
      mL of acetonitrile, filtered by filter membrane (0.22 mum), and then analyzed by 
      HPLC. The experimental conditions in the D-mu-SPE process could have a great 
      impact on the extraction efficiency. Experimental conditions were optimized using 
      a single factor optimization approach to further enhance the extraction 
      recoveries. The optimized conditions included adsorbent amount, extraction time, 
      desorption solvent type, desorption solvent volume, desorption time, and NaCl 
      addition amount. Under the optimal conditions, a linearity range of 10-500 mug/L 
      and limits of detection (LODs, S/N=3) of 1.1-2.1 mug/L were obtained. The 
      extraction recoveries and relative standard deviations (RSDs) of the four BUs 
      were 82.8%-94.1% and 2.1%-8.0%, respectively. The established approach was 
      compared with reported approaches targeting benzoylurea insecticides. It was 
      discovered that this approach consumed less sample, material, organic solvent, 
      and pretreatment time. It provided a more rapid and green choice for the 
      determination of benzoylurea pesticides. To determine the applicability, the 
      proposed approach was applied to analyze the four benzoylurea insecticides in 
      three river water samples. The real water samples were pretreated using the 
      developed approach ahead of instrumental analysis, and no benzoylurea pesticides 
      residue was detected. Next, standard addition experiments were performed under 
      three spiking levels, including 15, 50, and 200 mug/L. The established approach 
      had good accuracy and feasibility with satisfactory recoveries (69.5%-99.4%) and 
      RSDs (0.2%-9.5%).
FAU - Cui, Xiaoyan
AU  - Cui X
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
FAU - Ma, Wenyu
AU  - Ma W
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
FAU - Lin, Xiwen
AU  - Lin X
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
FAU - Lu, Runhua
AU  - Lu R
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
FAU - Gao, Haixiang
AU  - Gao H
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
FAU - Zhou, Wenfeng
AU  - Zhou W
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
LA  - chi
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Acetonitriles)
RN  - 0 (Acrylates)
RN  - 0 (Dendrimers)
RN  - 0 (Ethylenediamines)
RN  - 0 (Indoles)
RN  - 0 (Insecticides)
RN  - 0 (Pesticide Residues)
RN  - 0 (Poly(amidoamine))
RN  - 0 (Polyamines)
RN  - 0 (Polymers)
RN  - 0 (Silanes)
RN  - 0 (Solvents)
RN  - 0 (polydopamine)
RN  - 059QF0KO0R (Water)
RN  - 3K9958V90M (Ethanol)
RN  - 451W47IQ8X (Sodium Chloride)
RN  - 7631-86-9 (Silicon Dioxide)
RN  - 7664-41-7 (Ammonia)
RN  - J64922108F (Benzene)
RN  - J76U6ZSI8D (Diflubenzuron)
RN  - N762921K75 (Nitrogen)
RN  - VTD58H1Z2X (Dopamine)
RN  - WC487PR91H (methyl acrylate)
SB  - IM
MH  - Acetonitriles/analysis
MH  - Acrylates
MH  - Ammonia/analysis
MH  - Benzene/analysis
MH  - Chromatography, High Pressure Liquid
MH  - *Dendrimers/analysis
MH  - *Diflubenzuron/analysis
MH  - Dopamine/analysis
MH  - Ethanol/analysis
MH  - Ethylenediamines/analysis
MH  - Indoles
MH  - *Insecticides/analysis
MH  - *Nanocomposites/analysis
MH  - Nitrogen/analysis
MH  - *Pesticide Residues/analysis
MH  - Polyamines
MH  - Polymers
MH  - Silanes/analysis
MH  - Silicon Dioxide/analysis
MH  - Sodium Chloride/analysis
MH  - Solid Phase Extraction
MH  - Solvents/analysis
MH  - Water/analysis
PMC - PMC9577697
OTO - NOTNLM
OT  - benzoylurea insecticides (BUs)
OT  - dendrimer
OT  - dispersed micro solid-phase extraction (D-mu-SPE)
OT  - polyamidoamine (PAMAM)
OT  - polydopamine (PDA)
EDAT- 2022/10/13 06:00
MHDA- 2022/10/14 06:00
PMCR- 2022/10/08
CRDT- 2022/10/12 06:22
PHST- 2022/10/12 06:22 [entrez]
PHST- 2022/10/13 06:00 [pubmed]
PHST- 2022/10/14 06:00 [medline]
PHST- 2022/10/08 00:00 [pmc-release]
AID - 10.3724/SP.J.1123.2022.03012 [doi]
PST - ppublish
SO  - Se Pu. 2022 Oct;40(10):929-936. doi: 10.3724/SP.J.1123.2022.03012.