ANALYTICAL LETTERS
·
2023
·
IF 2
Nan Xu,Ting Pu,Lei Chen,Qin Yang,AnYuan Tong,FuBin Chen,ChunYan Yang
Herein, nitrogen-doped carbon quantum dots (N-CQDs) were synthesized by a solvothermal reaction for the determination of tartrazine in food. The microscopic structures and optical properties were examined by high resolution transmission electron microscopy, x-ray diffraction, x-ray photoelectron spectroscopy, Fourier-transform infrared and ultraviolet-visible absorption spectroscopy. The fluorescence emission of the N-CQDs were 450 nm upon the excitation of 350 nm with a quantum yield of 14%. The N-CQDs provide a good linear range from 0.8 to 100 μM and low detection limit of 0.078 μM. The constructed fluorescent probe was successfully adopted to determine tartrazine in food samples with good accuracy. The fluorescence quenching mechanism of tartrazine by the N-CQDs are likely due to the static quenching and inner filter effect. Overall, a wide linear range, sensitive and stable fluorescent probe is provided which indicates a new method for the determination of tartrazine.
研究领域:
分析化学
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食品安全
·
材料科学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Haijian Liu,Miao Wang,Guofu Huang
A new composite material (SDs@ZIF-8) was synthesized by integrating sulfur nanodots (SDs) into metal-organic frameworks (ZIF-8) through a facile one-step self-assembly strategy. The obtained SDs@ZIF-8 has not only the high adsorption performance of ZIF-8 but also the superior fluorescence characteristics of SDs . The composite featured good dispersibility, stable structure as well as excellent fluorescence in water solution, and can be used as an ideal fluorescent sensor for tartrazine detection. Due to the high specific surface area and adsorption performance of ZIF-8, the prepared composite material can significantly enrich tartrazine, further enhancing the sensitivity of analysis. The fluorescence of SDs @ZIF-8 composite can be effectively quenched by tartrazine through the inner filter effect. The sensing technique exhibited exceptional sensitivity, as evidenced by its impressive detection limit of 6.5 nM across a broad linear range spanning from 0.02 to 90 μM. In addition to its high sensitivity, the technique displayed rapid response times and excellent selectivity. Moreover, the fluorescent sensing technology we developed has been employed successfully for the detection of tartrazine in real samples, which is expected to promote the development of the food safety industry.
研究领域:
分析化学
·
食品安全
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Guangli Li,Yafeng Zhang,Yonghui Xia,Tianyu Wang,Yuan Jin
Excessive consumption of Sunset Yellow (SY) and Tartrazine (Tz) might cause adverse effects on human health. Hence, it is essential to develop a rapid and reliable technique for simultaneous determination of SY and Tz. Herein, an innovative voltammetric sensor was constructed for simultaneous determination of SY and Tz using multiwalled carbon nanotubes decorated dandelion-like α-MnO 2 microspheres (MnO 2 /MWCNTs). The physiochemical properties of MnO 2 /MWCNTs were studied by various microscopic, spectroscopic, and electrochemical techniques. Various parameters, including accumulation time, accumulation potential, loading volume, buffer pH, and scanning rate, were systematically explored in order to pursuit the higher peak current response. The MnO 2 /MWCNT effectively enlarged the electroactive surface area and expedited the electron transfer. As a result, the MnO 2 /MWCNT decorated glassy carbon electrode (GCE) displayed superior sensing performance for the electrooxidation of SY and Tz over a wide concentration range (0.06–10 μM), owing to the synergistic effect from dandelion-like α-MnO 2 microspheres and highly conductive MWCNTs. The detection limits were 0.005 and 0.01 μM for SY and Tz, respectively. In addition, the MnO 2 /MWCNT/GCE demonstrated strong anti-interfering capacity against potential interfering species, and highly reproducible electrode manufacture. The MnO 2 /MWCNT/GCE was successfully employed for the simultaneous and sensitive determination of SY and Tz in carbonate beverage with good recovery.
研究领域:
分析化学
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食品科学
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材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Li Tian,Yujia Song,Ruidan Li,Yanjia Guo,Pengfei Han,Guangping Ma,Hanyue Jiang,Wenzhuo Wang,Tengying Ma
A molecularly imprinted electrochemiluminescence (ECL) sensor was developed for ultrasensitive tartrazine (TZ) detection. The system employed Ru(bpy) 3 2+ encapsulated in UiO-66 as the luminophore, with tri-n-propylamine (TPrA) as co-reactant. Carbon nitride nanosheets (CNNS) functionalized with Ag nanoparticles (Ag NPs) enhanced the ECL signal through resonance energy transfer, while the UiO-66@Ru(bpy) 3 2+ /CNNS@Ag NPs/TPrA combination provided synergistic signal amplification. Selective recognition was achieved through a molecularly imprinted polymer (MIP) layer fabricated by electropolymerizing pyrrole with TZ as template. Target binding induced ECL quenching via electron transfer inhibition, enabling quantification. The sensor showed excellent performance with a wide linear range (1.0 × 10 −12 -1.0 × 10 −6 mol L −1 ) and low detection limit (3.3 × 10 −13 mol L −1 , S/N = 3). Practical utility was demonstrated through successful TZ determination in food samples, highlighting its potential for synthetic dye monitoring in complex matrices. The integration of advanced nanomaterials with MIP technology resulted in a sensitive, selective, and practical sensing platform.
研究领域:
分析化学
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纳米材料
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电分析传感器
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食品安全监测
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环境传感
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产品关联
DOI
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2023
·
IF 2.3
Arsalan Gholipour,Shahrzad Rahmani
Nowadays, carbon quantum dots (CDs) as semiconductor synthesized nanoparticles have become an attractive subject for lots of applications due to their remarkable features. In the current study, the highly fluorescent (FL) CDs with great characteristics were synthesized through a novel one-step microwave irradiation by citric acid monohydrate and urea as carbon precursors. The as-prepared CDs were quasi-spherical shape with an average diameter of 4.5 nm and emitted bright blue FL under ultraviolet light irradiation (UV). Furthermore, the synthesized CDs possessed different properties such as diverse functional groups, good sensitivity and selectivity, high water-solubility, low toxicity, and significant stability in various environmental conditions. The results indicated that the as-prepared CDs can be applied as a fluorescent probe for detection of different concentrations of tartrazine from 5 to 100 µM in food samples. In addition, the findings revealed that the good linear relationship was obtained between the FL intensity of CDs and different concentrations of tartrazine over the range of 5 to 100 µM with the detection limit of 2.58 µM.
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 105
·86445-86452
·
IF 3.84
Zhenzhen Zhang,Lingling Wang,Xueyan Liu,Danfeng Zhang,Lei Zhang,Qi Li
A new micro-solid-phase extraction method based on a prestructured filter membrane was developed to facilitate simultaneous analysis of tartrazine (TA) and sunset yellow (SY) with high performance liquid chromatography (HPLC). A filter membrane impregnated with nano-Al2O3 particles was proposed as a new micro-solid-phase extraction (μ-SPE) device for the preconcentration of colorants in food. The method integrated isolation and concentration in one step, and the adsorbed colorants could be easily eluted from the filter membrane for HPLC analysis. This process does not involve any additional sample treatment. The method is facile and easy to operate. The method showed good linearity, with correlation coefficients >0.9982 in the range of 1.0–200.0 ng mL−1, and low limits of detection (0.10–0.20 ng mL−1). Finally, the recovery values were 86.9–124.0% for the colorants in various food samples. The results indicated that the developed method would be a novel method for rapid determination of TA and SY at trace levels in real samples.
研究领域:
分析化学
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食品安全
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2014
·Vol. 161
·期 14
·B297
·
IF 2.859
Meiling Wang,Yunqiao Gao,Qian Sun,Jianwei Zhao
A highly sensitive method for simultaneous electrochemical determination of Sunset yellow (SY) and Tartrazine (Tz) in foods was proposed based on the stable aqueous dispersions of polypyrrole (ppy) decorated oxidized single-walled carbon nanotubes (SCNT-COOH). Under optimal experimental conditions, the dispersions modified glassy carbon electrode (GCE) exhibited remarkable sensitivity of (72.36 μA/μM and 23.39 μA/μM) with wide linear responses to Sunset yellow and Tartrazine ranging from 5.0 × 10−9 to 1.0 × 10−6 M and 7.0 × 10−9 to 1.0 × 10−6 M, and detection limits as low as 7.0 × 10−10 M and 1.0 × 10−9 M for Sunset yellow and Tartrazine, respectively, which might be due to hydrogen bonds between hydroxyl groups of dyes and oxygen-containing groups of the composite. In addition, the electrostatic interaction between the dyes and the ppy may also play a main role except for good dispersibility.
研究领域:
食品科学
·
分析化学
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产品关联
DOI
高影响因子
Catalysts
·
2022
·Vol. 12
·期 10
·1114
·
IF 4.501
Wenqi You,Liang Liu,Junjie Xu,Tao Jin,Lichun Fu,Yuwei Pan
Zero-valent iron/peroxymonosulfate (Fe0/PMS) has been considered as a promising approach for wastewater treatment. Anions and cations are widely present in wastewater and have significant effects on the performance of the Fe0/PMS system for wastewater treatment. Thus, in the present study, tartrazine was selected as the target model; SO42−, NO3−, HCO3−, and Cl−were selected as representative anions and Ca2+, Cu2+, Mg2+, and Mn2+were chosen as representative cations. The effect of these anions and cations on tartrazine removal and major radicals in the Fe0/PMS were systematically investigated. The presence of a certain concentration of SO42−and Cl−had positive, NO3−had negative, and HCO3−had negligible effects on tartrazine removal in the Fe0/PMS system. SO42−and HCO3−had a small effect on the contribution proportion of reduction, SO4•−and•OH; a certain concentration of Cl−could enhance the contribution proportion of•OH; and NO3−would decrease the contribution proportion of SO4•−and•OH. A certain concentration of each of Ca2+, Cu2+, Mg2+, and Mn2+could enhance the tartrazine removal in the Fe0/PMS system. Ca2+, Cu2+, and Mg2+had no effect of the contribution of reduction, SO4•−and•OH, while a certain concentration of Mn2+could enhance the contribution proportion of SO4•−. These results can provide some references for the Fe0/PMS system to treat actual wastewater containing anions and cations.Keywords:zero-valent iron;peroxymonosulfate;anions;cations
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Zeming Huang,Jiehao Lei,Hong Ruan,Yongyang Gong,Guan Wang,Li Zhou
Sulfur quantum dots (SQDs), the rising star in fluorescent nanomaterials, have captured increasing attention due to their unique attributes. However, the development of SQDs with targeted fluorescence response to analyte is still a challenge. Herein, we report a robust fluorescent SQDs material that possess both molecular recognition and fluorescence detection capability by employing hydroxypropyl-β-cyclodextrin (HP-β-CD) as ligand. The prepared SQDs simultaneously display fine aqueous dispersibility, stable and tunable fluorescence, and favorable biocompatibility, which enable them promising for applications in cellular imaging and sensing. Owing to the synergistic effect of inner filter effect (IFE) and host-guest interaction, the SQDs can be utilized as an effective fluorescent probe for tartrazine (TTZ) detection with excellent sensitivity and selectivity. The limit of detection can reach 82 nM with a wide linear range of 0–30 μM. Furthermore, the fluorescent SQDs were successfully utilized to detect TTZ in river water and food samples with satisfactory performance.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Yong Wang,Yaxin Mu,Jie Hu,Qianfen Zhuang,Yongnian Ni
In the work, water-soluble bovine serum albumin-protected fluorescent nickel nanoclusters (BSA-NiNCs) are used as fluorescent probes to construct a label-free fluorescence quenching sensor for sensitive and selective detection of tartrazine . The fluorescent BSA-NiNCs are synthesized in one pot using BSA as both the template and reducing agent, and hydrogen peroxide as the additive. The as-prepared NiNCs are characterized by using various analytical techniques like transmission electron microscopy , X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV–Vis absorption spectroscopy, circular dichroism spectroscopy, and fluorescence spectroscopy. The synthesized BSA-NiNCs have a quantum yield of ca. 8% by using quinine sulfate as a standard. The sensor for tartrazine detection shows a wide linear range of 0.01–3.5 μM, with a low detection limit of 4 nM. The fluorescence quenching very likely results from the combination of the intermolecular interactions and the secondary inner filter effect between BSA-NiNCs and tartrazine. Then, the proposed sensor is successfully employed for tartrazine detection in drink samples, and the results are comparable with those based on a reference HPLC method.
研究领域:
生物化学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
AQUATIC TOXICOLOGY
·
2021
·
IF 4.964
Limin Wu,Xixi Lv,Yifan Zhang,Qingqing Xin,Yuanchao Zou,Xuejun Li
Tartrazine (TZ) is an azo dye widely used in foods, cosmetics, beverages, textile, and leather. In recent years, there are reports on detecting azo dyes in the aquatic environment, so the impact of these compounds on aquatic organisms could not be ignored. In this study, we aimed to evaluate the adverse effects of TZ exposure on teleosts’ embryo development and juvenile's health by using crucian carp ( Carassius carassius ) as the experimental fish. The results showed that embryos exposed to TZ (0.19, 0.76 and 1.5 mM) exhibited a deformity, delayed egg resorption and decreased fertilization and hatching rate. When the juvenile fish were exposed to TZ at a level higher than those present in water for 30 days caused severe histopathological damages of the gill, intestine, kidney and liver. Antioxidant enzymes (CAT, SOD and GSH-Px) activities in the gill, intestine and liver, exhibited a decreasing trend after TZ exposure, while MDA contents elevated. TZ exposure also resulted in the upregulation of pro-inflammatory cytokines ( il1 and il6 ), lysozymes ( lyz ), complement component 3 ( c3 ), and β-defensin 3 ( defb3 ). In addition, TZ exposure also affected the intestinal microbiota structure. In summary, the data in the present study indicated that TZ exposure reduce the embryo fertilization and hatching rate; cause histopathological damage of tissues, trigger oxidative stress, innate immune disorders and dysbiosis of gut microbiota in juvenile crucian carp. Therefore, it is necessary to be informed about the hazards of TZ exposure and the discharge of the dye into waters should be strictly administrated to prevent environmental pollution.
研究领域:
环境科学
·
水生毒理学
·
免疫学
·
微生物学
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DOI
PubMed
高影响因子
Analytical Methods
·
2022
·Vol. 14
·期 41
·4127-4132
·
IF 3.532
Lei Jiang,Lin Yuan,Ze Liu,Yingying Xiang,Fei Song,Lifen Meng,Yujiao Tu
Colorant tartrazine is widely used in the food industry, but its long-term and excessive consumption is harmful to human health. Therefore, it is necessary to establish a sensitive detection method for tartrazine. Blue fluorescent carbon dots with L-arginine and o-phenylenediamine as precursors, namely L-Arg/oPD-CDs, were prepared via the hydrothermal method. Then, L-Arg/oPD-CDs were further purified by dialysis, thin layer chromatography and column chromatography. A dual-mode nanosensor based on fluorescent and UV absorption was successfully developed. Excellent linear ranges of 0–5 μM and 10–50 μM were obtained with a low detection limit of 42.3 nM based on fluorescence. A good linear range of 0–50 μM was obtained with a low detection limit of 130.15 nM based on UV absorption. The quenching mechanism of tartrazine towards L-Arg/oPD-CDs fluorescence was the inner filter effect. In addition, a dual-mode nanosensor was used for tartrazine determination in millet, maize flour, carbonated drink, and sugar samples. This study provides new insight into the detection of tartrazine by applying a dual-mode nanosensor.
研究领域:
分析化学
·
食品安全
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）