Analytical Methods
·
2017
·Vol. 10
·期 3
·359-364
·
IF 1.9
Yongli Yu,Jianli Niu,Wei Li,Haixia Liu,Meng Wang
An approach for Brilliant Blue (BB) detection was established based on fluorescence resonance energy transfer, where YVO4:Eu nanocrystals (NCs) are used as the energy donors and BB as the energy acceptor. BB could be electrostatically combined with the YVO4:Eu NCs and the fluorescence of the nanocrystals was quenched. Under optimal conditions, the logarithm of fluorescence intensity of the YVO4:Eu NCs was linearly proportional to the BB concentration in the ranges of 2.5 × 10−6–2.5 × 10−4 and 2.5 × 10−4–2.5 × 10−3 g L−1. The limit of detection was 1.0 × 10−6 g L−1. The method was successfully applied for BB detection in juices and candies. This method has a number of advantages, such as the facile synthesis of YVO4:Eu NCs, a simple and quick quantitative procedure and competitive analytical performance.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2015
·
IF 1.295
Meiling Wang,Mengzhi Yang,Qian Sun,Yunqiao Gao,Jianwei Zhao
A facile method was developed for the detection of Brilliant Blue FCF (BB FCF) (E133), a synthetic soluble colorant in common beverages. The method is based on a new composite of multi-walled carbon nanotube (MWCNT)-graphite oxide (GO)-room temperature ionic liquids (MWCNT/GO-RTIL) of 1-butyl-3-methylimidazolium hexafluorophosphate with high dispersibility and strong conductivity. Differential pulse stripping voltammetry (DPSV) and the MWCNT/GO-RTIL composite-modified glassy carbon electrode (GCE) were used to determine the BB FCF in this work. Under the optimum experimental conditions, the oxidation current of BB FCF was proportional to its concentration in two linear ranges, from 6.34 μg kg−1 to 7.93 × 102 μg kg−1 and 7.93 × 102 μg kg−1 to 7.93 × 103 μg kg−1.The detection limit was down to 3.01 μg kg−1 at signal-to-noise ratio of 3. Also, this method has been successfully applied in the determination of BB FCF in common beverage samples, including RIO cocktail, Bacardi Breezer and Reinnbow rum dinks. The assay results of BB FCF in drink samples obtained by the proposed method were in a good agreement with the reference values detected by high performance liquid chromatography (HPLC). The proposed method provided a useful tool for the assay of BB FCF in drink samples.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yibo Zhang,Peng Hu,Yaseen Muhammad,Ying Tang,Shan Shao,Zhu Gao,Jiaxing Wang,Ruimeng Wang,Yang Hu,Lihan Kuang,Zhongxing Zhao,Zhenxia Zhao
Hollow nano-sphere NH 2 -MIL88(Fe) (HS NMIL88(Fe)) with interfacial defects was fabricated to load laccase as a host. Through metal multi-coordination, dopamine engineered large amount of defective pores with large size on NH 2 -MIL88(Fe) interface. This defect-interfacial structure provided a high-density host for laccases, which efficiently protected enzyme from structure deformation and then inhibited inactivation. Besides, the unique hollow structure will help to fasten reactant diffusivity, and thus improved the catalytic reaction process. Experimental results showed that the maximum immobilized capacity and maximum activity recovery for laccase reached up to 213.2 mg/g and 75.8% beyond many state-of-the-art enzyme hosts, respectively. Meanwhile, the immobilized laccase exhibited better pH, thermal and storage stabilities on HS NMIL88(Fe) than free and loaded on NMIL88(Fe) ones. Thermal deactivation kinetics analysis showed that HS NMIL88(Fe)-Lac had much higher apparent activation energies of (105.2 kJ/mol) than that of free laccase (89.2 kJ/mol). Catalyzing decolorization performance of dye Remazol Brilliant Blue R (RBBR) was finally carried out and exhibited the decolorization rate of 1.8 times and 2.6 times faster than solid NMIL88(Fe)-Lac and free laccase, respectively. Moreover, the interaction mechanism of laccase for RBBR was investigated and revealed by molecular docking.
研究领域:
生物化学
·
环境科学
·
材料科学
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 30
·期 1
·24
·
IF 4.2
Mengyue Zhang,Fan Yang,Nan Wang,Jifu Du,Juntao Yan,Ya Sun,Manman Zhang,Long Zhao
The efficient removal of dyes is of significant importance for environmental purification and human health. In this study, a novel material (Si-MPTS-IL) has been synthesized by the immobilization of imidazole ionic liquids (ILs) onto nano-silica using the radiation grafting technique. The adsorption performance of Si-MPTS-IL for Coomassie Brilliant Blue (CBB) removal is studied by a series of static adsorption experiments. It is found that Si-MPTS-IL has ultra-fast adsorption kinetics, reaching equilibrium within 2 min. The adsorption process for CBB conforms to the Langmuir model. In addition, Si-MPTS-IL exhibits a negligible impact on the adsorption efficiency of CBB with the increase in salt concentration. After six cycles of adsorption–desorption, the adsorption efficiency of Si-MPTS-IL remained above 80%, indicating excellent regenerative properties and a promising candidate for the treatment of wastewater containing CBB. A study of the mechanism indicates that the CBB capture by Si-MPTS-IL can be attributed to the synergistic effects of electrostatic interactions and pore filling.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2025
·
IF 3.3
junbin cao,chengcheng xu,Jianwei Zhao,wenmei tao
This research created a disposable electrochemical sensor utilizing a chitosan-biochar (CS-H500) composite-modified glassy carbon electrode (GCE) for the very sensitive detection of brilliant blue (BB) in food products. The CS-H500 composite dispersion was synthesized using the ultrasonic dispersion method, while quantum chemical simulations clarified the adsorption mechanism of BB molecules on the electrode surface via π-π conjugation and electrostatic interactions. Optimized experimental settings comprised: 16 μL of CS-H500 dispersion modification, 300 seconds of accumulation period, and a pH 7.0 phosphate buffer. The results indicated that chitosan (CS) markedly enhanced the dispersibility of biochar, augmenting the effective surface area of the modified electrode by 2.53 times (0.179 cm2) in comparison to the bare GCE. The sensor demonstrated a linear detection range of 1.0×10-6 to 1.0×10-4 mol/L for BB, with a detection limit of 1.0×10-7 mol/L (S/N=3), acceptable recoveries (91.49%-102.18%), and commendable reproducibility (RSD=8.01%). Interference studies validated significant selectivity against citric acid, glucose, prevalent metal ions, and proficient differentiation from mixed pigments such as sunset yellow (SY) and fluorescein sodium (FS). The analysis of practical beverage samples confirmed its reliability. This disposable electrode design streamlines operations, prevents cross-contamination, and offers an effective option for on-site monitoring of food additives.
研究领域:
电化学
·
食品安全
·
传感技术
·
纳米材料
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL SCIENCES
·
2019
·Vol. 35
·期 6
·639-644
·
IF 1.618
Shan Xueling,Pan Yuting,Chen Xiaohui,Wang Wenchang,Chen Zhidong
A novel electrochemiluminescence (ECL) sensor for detection of brilliant blue FCF (BB) has been developed using Ru@ Zn-MOF/nafion modified GCE (glass carbon electrode) in this research. Different from conventional method for usage of Ru(bpy) 3 2+ in solution-phase, Ru(bpy) 3 2+ here was immobilized on a zinc-metal-organic-framework (Zn-MOF). After adding BB, a significant quenching phenomenon of ECL intensity was observed. The behavior of BB on the quenching effect of Ru(bpy) 3 2+ /Zn-MOF in different conditions was investigated thoroughly and the detection limit was achieved to 2.5 × 10 −8 M in an optimized condition. Furthermore, the interference of some conventional ions and amino acids to the detection of BB was also investigated. Additionally, the composite showed a good effect on the detection of BB in commercial samples. The proposed sensor provided a promising platform for food safety analysis, environmental monitoring and clinical testing.
研究领域:
分析化学
·
食品安全
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TEXTILE RESEARCH JOURNAL
·
2024
·
IF 1.6
Jingjing Yang,Xinyi Yang,Cheng Wu,Lin Wang
By modifying the structure of the reactive group, the dye VS-GN containing two sulphatoethylsulphone groups based on the triphenodioxazine chromophore was developed. The solubility of VS-GN reached 300 g/L at 25°C. The substantivity and reactivity were 49.3% and 53.1%, respectively. VS-GN showed excellent stability under salt–alkali and alkali stress. Environmentally friendly dyeing methods, including low liquor ratio and cold pad-batch dyeing techniques, were successfully applied for the reactive dye VS-GN. VS-GN completed the exhaust dyeing process at 60°C, and its fixation on cotton fabric was 85.9% at a dye concentration of 2.0% when the liquor ratio was 1:6 and the concentration of Na2CO3 and Na2SO4 were 10 and 80 g/L, respectively. The fixation of the dye VS-GN on cotton fabric using the cold pad-batch dyeing method (10 mL/L of NaOH, 38 oBe’, 20 g/L of Na2CO3, and a batching time of 8 h) was 86.4% at a dye concentration of 20 g/L, which was 27.4% higher than that of conventional reactive brilliant blue KE-GN. The results of the levelness of the dyed cotton fabrics showed that the dyed cotton fabric dyed with VS-GN exhibited a good dyeing level with a low value of ΔE (<0.4). The results of color fastness at a 1/1 standard depth showed that the light fastness of the dyed cotton was grade 4. The dry and wet rubbing fastnesses of the dyed cotton fabric were grades 4–5 and 2–3 or 3, respectively. The washing fastness of the dyed cotton fabric was grade 4 or 4–5.
研究领域:
染料化学
·
纺织工程
·
环境科学
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2020
·Vol. 12
·期 37
·4551-4555
·
IF 2.596
Haijian Liu,Miao Wang,Zhenxiang Li,Chengjie Xin,Guofu Huang
Due to the inner filter effect (IFE) between Brilliant Blue (BB) and gold nanoclusters (AuNCs), a simple and rapid approach for BB detection was developed. Since the absorption spectrum of BB has a good overlap with the emission spectrum of the AuNCs, the fluorescence of the AuNC solution was quenched after adding BB. Under optimal conditions, a good linear relationship for detection of BB was obtained from 0.05 to 7.5 μM, and the detection limit was 0.0167 μM. More importantly, the assay was successfully applied to assess BB in food samples such as hard candy, chocolate and dried blueberries, showing its potential in food quality control in the future.
研究领域:
分析化学
·
食品安全
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL ENGINEERING SCIENCE
·
2021
·
IF 1.907
Zhijie Mao,Zuoxiang Zeng,Weilan Xue,Shan Jiang
A new modified walnut shell (TWNS) was synthesized through sequentially reacting the walnut shell (WNS) with thionyl chloride and triethylamine, and it was applied to adsorb Reactive Brilliant Blue (RB-19) from dye wastewater. In the range of 288 to 308 K, the isotherms, thermodynamics, and kinetics of RB-19 adsorption onto TWNS were investigated. The isothermal experimental data have a good correlation with the Langmuir isotherm model, and the theoretical maximum monolayer adsorption capacity of TWNS was 258.59 mg/g at 288 K. The kinetic data of RB-19 adsorption onto TWNS accorded with the pseudo-second-order model. The diffusion mechanism of RB-19 adsorption onto TWNS was studied by Weber and Morris intraparticle diffusion equation and Boyd and Reichenberg model, and the results showed the adsorption is primarily controlled by membrane diffusion. The thermodynamic calculation results demonstrated that the adsorption process of RB-19 onto TWNS is a spontaneous, exothermic, and favorable process. Moreover, the recycled TWNS retains high adsorption capacity after four cycles.
研究领域:
环境科学
·
化学工程
·
水处理
·
吸附技术
✓ 已验证
DOI
高影响因子
JOURNAL OF AOAC INTERNATIONAL
·
2019
·Vol. 98
·期 3
·817-821
·
IF 1.201
Wang Wenchang,Chen Ye,Zhang Jing,Wang Xue,Chen Zhidong
A sensitive electrochemical method was developed for the simultaneous determination of Brilliant Blue (BB) and tartrazine (Tz) using an ionic liquid-modified expanded graphite paste electrode (IL-EGPE). The IL-EGPE was prepared by mixing ionic liquid-expanded graphite composite (IL-EG) with solid paraffin. Compared with the EGPE, the IL-EGPE remarkably enhanced the electrocatalytic oxidation signals of BB and Tz. Under optimal experimental conditions, the designed IL-EGPE exhibited wide linear responses to BB and Tz ranging from 5.0 × 10–9 to 4.0 × 10–6 M and 1.0 × 10–8 to 1.0 × 10–6 M, respectively. The detection limits for BB and Tz were 2.0 × 10–9 M (1.6 ng/mL) and 3.3 × 10–9 M (1.8 ng/mL) at an S/N of 3, respectively. This electrode showed good reproducibility, stability, and reusability. The proposed method was successfully applied in the simultaneous determination of BB and Tz in a soft drink with satisfactory results.
✓ 已验证
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 10
·1-14
·
IF 3
Liu Jingliang,An Fengxia,Zheng Di,Li Chao,Sun Jingya
In this study, Mn-Ni-layered double hydroxides (Mn-Ni-LDHs) were synthesized and utilized to activate peroxymonosulfate (PMS) for degrading reactive brilliant blue KN-R (KN-R) in aqueous solutions. The characterization results demonstrate that the catalysts synthesized are layered structures, and the surface area is 169.3 m 2 /g. The Mn-Ni-LDHs exhibited significant efficiency effective for the degradation of KN-R via activating PMS, achieving 96.5% degradation of KN-R within 90 min under optimal conditions (0.20 g/L catalyst, 10 mM PMS, pH=10.0 and 25°C). The reaction followed pseudo-first-order kinetics with a rate constant of 0.0351 min -1 , and the apparent activation energy was calculated to be 11.94 kJ/mol. Electron paramagnetic resonance (EPR) and free radical scavenging experiments identified ·O 2 − and 1 O 2 as the primary reactive species involved in the reaction for KN-R degradation. The proposed catalytic mechanism suggests that redox cycling between Mn 4+ /Mn 3+ and Ni 3+ /Ni 2+ within Mn-Ni-LDHs plays a critical role in enhancing PMS activation, thereby promoting the continuous generation of active oxygen species.
研究领域:
环境科学
·
化学工程
·
材料科学
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Qian Yang,Jinhua Li,Xiaoyan Wang,Hailong Peng,Hua Xiong,Lingxin Chen
Single-component dual-emission nanoparticles were synthesized by chelating the organic ligand 8-hydroxyquinoline (HQ) to the surface of CdTe/ZnS quantum dots, namely CdTe/ZnQ 2 , and were used to construct a novel mesoporous structured molecular imprinting ratiometric fluorescence sensor by facile one-pot sol-gel polymerization for the visual detection of Brilliant Blue. The CdTe/ZnQ 2 had bimodal fluorescence belonging to CdTe and ZnQ 2 segments, respectively; significantly, the emission wavelength of CdTe was optimized to be 630 nm for the largest overlap with the absorption spectrum of Brilliant Blue. Consequently, fluorescence resonance energy transfer (FRET) efficiency was greatly enhanced, resulting in ideal determination. A favorable linearity toward Brilliant Blue was obtained within 0–1.0 μmol·L −1 along with profuse color evolution from orange to yellowish orange to yellowish green to green, and a high detectability of 8.8 nmol·L −1 was offered. Excellent recognition selectivity for Brilliant Blue over possibly coexistent food colorants was demonstrated, with a high imprinting factor of 7.1. Furthermore, endogenous Brilliant Blue was detected ranging from 0.21 to 41.03 mg/kg in six typical food samples with relative standard deviations lower than 3.5%, and the results agreed well with that afforded by conventional methods. Using Brilliant Blue as a model, this dual-emission color-controllable nanoparticle based imprinting ratiometric fluorescence sensor provided promising perspectives for the highly selective and sensitive, rapid, visual detection of colored substances in complicated matrices.
研究领域:
纳米技术
·
分析化学
·
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）