ANALYTICA CHIMICA ACTA
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2020
·
IF 5.977
Kun Zhang,Yan Huang,Yin-Jing Shen,Lin-Feng Zhang,Shuang Ma,Ting-Ting Chen,Ziqiang Zheng,Shishen Zhang,Benxia Li
Herein, we report our strategy to develop the efficient chemosensor and real-time monitoring technique for cyanuric chloride (TCT) detection. A luminescent macrocyclic mononuclear Sm(III) complex Sm - 2 k bearing with two dynamic imine bonds has been constructed via the template synthesis between dialdehyde H 2 Q k and matched diamine 1,2-bis(2-aminoethoxy)ethane. Sensing experiments reveal that complex Sm - 2 k exhibits the turn-off fluorescent and colorimetric response for TCT in CH 3 OH. It is especially encouraging that this optical sensing process is not only rapid within 60 s but also high-efficient in the presence of TCT analogues as well as sensitive with the low limit of detection (LOD, 1.74 μM) and wide linear sensing range. Mechanism studies demonstrate that TCT sensing is mainly based on the imine bond transformation of probe Sm - 2 k , which is due to the increased acidity induced by TCT. Meanwhile, a smartphone-based analytical method was developed to make complex Sm - 2 k accessible for the real-time TCT detection by RGB value outputs. It is believed that this work can shed some constructive lights on design of chemosensors and convenient detection technique for highly reactive analytes.
研究领域:
分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2020
·
IF 4.049
Tangjuan Zhao,Mengyan Zhang,Ling Ma,Li Ma,Hongmei Shi,Weijun Kang,Xiangdong Xu
A novel magnetic solid-phase extraction (MSPE) material (Fe 3 O 4 @SiO 2 -NH 2 -G2) had been prepared and employed for adsorption and analysis of seven quaternary ammonium compounds (QACs) in infant fruit and vegetable products coupled with high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS). In this paper, Fe 3 O 4 @SiO 2 -NH 2 -G2 was synthesized based on Fe 3 O 4 @SiO 2 -NH 2 and dendrimer (G2) consisting of cyanuric chloride and imidazole . The morphology, configuration and magnetic behavior of the magnetic material were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). Critical parameters affecting extraction efficiency, such as the adsorbent amount, sample pH, extraction time, the type of eluent, and desorption time, were optimized. The proposed method provided good linearity with the correlation coefficients ( R 2 ) of 0.9992-0.9999, low limits of detection (LODs) (0.05-0.50 μg kg −1 ) and limits of quantitation (LOQs) (0.20-2.00 μg kg −1 ). The satisfactory method recoveries in three spiked infant fruit and vegetable products samples were between 80.12% and 101.35% with the relative standard deviations (RSDs) less than 12.04%. In summary, the established method was an effective sample preparation method and showed good prospect for the analysis of QACs in complex matrices.
研究领域:
分析化学
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食品安全
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2025
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IF 4
Liang Qi,Xinting Zhang,Longjiang Li,Xilan Li,Xiangna Chang
Prolonged use of cosmetics containing banned fluoroquinolones can cause skin disorders and increase drug resistance. The QuEChERS method holds considerable application prospect in the pretreatment of cosmetic samples. Although octadecyl (C 18 )-bonded silica sorbent is commonly used as a QuEChERS clean-up material, the conventionally commercially available bulk C 18 sorbent is relatively costly and has a limited purification mechanism. In this study, using dendritic silica sphere (dSiO 2 ) as the substrate, and through the condensation reaction between cyanuric chloride (CNCl) and the amino group, a dNSiO 2 -CNCl-C 18 sorbent was synthesized. The sorbent was characterized using infrared spectroscopy, transmission electron microscopy, surface area and pore size analysis, and water contact angle measurements. The experimental results regarding the matrix removal from the model cosmetic lotion showed that dNSiO 2 -CNCl-C 18 exhibited a higher matrix removal efficiency compared to a commercial C 18 sorbent. Furthermore, a QuEChERS-HPLC-FLD method was developed using dNSiO 2 -CNCl-C 18 for the simultaneous detection of four fluoroquinolones, norfloxacin (NOR), pefloxacin (PEF), enrofloxacin (ENR), and difloxacin (DIF). The linear ranges were 0.10 to 100.0 μg L −1 for NOR and PEF, and 0.05 to 100.0 μg L −1 for ENR and DIF, with coefficient of determination exceeding 0.999. Satisfactory spiked recoveries for the lotion sample ranged from 91.5% to 107.0%, with intra-day and inter-day precision values not exceeding 7.6%. The established method was subsequently validated through its successful application in additional cream and emulsion samples. dNSiO 2 -CNCl-C 18 exhibits low synthesis costs and demonstrates promising potential for matrix purification in various complex samples, facilitating the rapid determination of target compounds.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Liang Qi,Xinting Zhang,Ying Gao,Pin Gong,Jian-Wu Xie
The determination of isoquinoline alkaloids (IQAs) is crucial for maximizing the pharmacological benefits of Rhizoma coptidis (RC). In this study, the dendritic silica sphere (dSiO 2 ) was covalently modified with cyanuric chloride (CNCl) to synthesize a porous dNSiO 2 -CNCl NP. The fluorescence of berberine (Ber), palmatine (Pal), coptisine (Cop), and jatrorrhizine (Jat) was remarkably enhanced by dNSiO 2 -CNCl NP for at least 38-fold, inspiring the accurate determination of the isoquinoline total alkaloids (IQTAs) in RC using fluorometry. The method exhibited good linearity within the concentration range of 0.005 to 1 μM, with a limit of detection (LOD) and quantitation (LOQ) of 0.001 and 0.004 μM. Specially, Jat was discovered to form a stable covalent linkage with dNSiO 2 -CNCl, showing an innovative and enduring fluorescent nanoparticle derived from a natural product. Furthermore, using dNSiO 2 -CNCl as a substrate for fluorescence enhancement and a dispersive solid-phase extraction (d-SPE) sorbent, a fluorescence-mediated HPLV-UV method was developed to monitor Ber, Pal, and Cop in serum. Rapid qualitative analysis using fluorescence was initially performed. In chromatography analysis, the linear range for Cop was 0.20 to 10 μM, with LOD and LOQ at 0.035 and 0.110 μM, while Pal and Ber showed good linearity in the range of 0.05 to 10 μM, with LODs and LOQs at 0.013 and 0.040 μM. The spiked recovery rates ranged from 90.4% to 99.8% for the three IQAs, with intra-day precision below 7.9% and inter-day precision below 9.9%. The dual-functional dNSiO 2 -CNCl NP exhibited promising prospect in fluorescence sensing and separation applications for detecting drugs.
研究领域:
分析化学
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纳米技术
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药学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Biomedical Nanotechnology
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2022
·Vol. 18
·期 4
·1138-1145
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IF 3.641
Wang Wenli,Qiu Xinyu,Dong Qiushi,Wang Jingwen,Hao Qiulian,Liu Guiying,Li Yan,Zhang Xin
Fragrances are widely used in everyday life. However, too fast volatilization rates and poor adhesion on substrates limit their applications. In this study, reactive nano-fragrance based on cyanuric chloride (CYC)-modified chitosan (CSCYC) were prepared by a solvent evaporation method.
First, CS-CYC was synthesized. Subsequently, CS and CS-CYC were utilized to prepare nano-fragrances. The results demonstrated that adding CS and CS-CYC could significantly improve the fragrance encapsulation efficiency and reduce the release rate of phenylethanol. phenylethanol Moreover, the
adhesion of nano-capsules on commodities was improved with CS by forming hydrogen bonds. CYC on the surface of the nanocapsules further enhanced the conglutination of nano-fragrances on commodities by a condensation reaction with wallpaper. Additionally, the addition of both CS and CS-CYC
imparted antibacterial activity for the nano-fragrances against Gram-positive and Gram-negative bacteria with excellent biosafety. Therefore, the reactive nano-fragrances with antimicrobial activity and slow-release properties could provide a comfortable and healthy living environment, making
them have vast application potential.
研究领域:
材料科学
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化学工程
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纳米技术
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香精技术
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抗菌研究
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Xuan Zhou,Can Jin,Guifeng Liu,Guomin Wu,Shuping Huo,Zhenwu Kong
With the increasing concern in sustainable development and environmental governance, the biomass-based magnetic materials containing sufficient active sites and regular structure can be regarded as the high-performance adsorbents for removal of heavy metal pollutants from wastewater. In this study, we reported the tunable covalent binding of lignin onto amine-functionalized magnetic nanoparticles (AMNP) using cyanuric chloride as a chemoselective cross-linker. The chemical structures, morphologies, and magnetic properties of the synthesized lignin-based magnetic adsorbents (L1@MNP and L2@MNP) were comprehensively characterized. Batch adsorption experiments were conducted to investigate various effecting factors, including pH, contact time, solution concentration and temperature. With the higher component ratio of AMNP/lignin, L1@MNP displayed higher adsorption affinity ( q max = 111.23 mg/g) and selectivity towards Pb(II) than L2@MNP ( q max = 81.97 mg/g). The adsorption kinetics agreed well with the pseudo-second-order kinetic model, and the thermodynamic adsorption behaviors were found to be an endothermic and spontaneous process. In addition, the presence of magnetic cores in the network facilitated the fast recovery of both two magnetic adsorbents after the adsorption process, owing to the good superparamagnetic properties for L1@MNP (40.06 emu/g) and L2@MNP (26.95 emu/g). Furthermore, the core–shell magnetic adsorbents also showed superior stability even in an acidic solution, of which the removal efficiency could well maintain over 85% after 5 cycles. This work provides a facile strategy for the design and synthesis of lignin-based adsorbents with flexible nanoparticles as a building block for the potential application prospects in Pb(II) removal from wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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可持续发展
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）