ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2016
·Vol. 23
·期 14
·13822-13831
·
IF 2.76
Li Yuanzhu,Wang Haijiao,Liu Xiaoxia,Zhao Guangyu,Sun Ying
The dissipation of different residual states of tetracycline antibiotics (TCs) including oxytetracycline (OTC), tetracycline (TC), and chlortetracycline (CTC) laboratory microcosm systems was investigated in this study. The residues were fractionated by stepwise extractions into aqueous state (KCl solution extracts), organic state (MeOH extracts), residual state I (citric acid-sodium citrate buffer and ethyl acetate extracts) and residual state II (acetonitrile-EDTA-McIlvaine buffer extracts) for accurate evaluation of TCs pollution. The antibiotics in the aqueous state were hardly detected, whereas the antibiotics in the organic state dissipated relatively fast (not detectable within 15 days after application) and followed simple first-order kinetics (SFOK) ( R
2 from 0.929 to 0.990). While first-order double-exponential decay model (FODED) ( R
2 from 0.840 to 0.999) and availability-adjusted first-order model (AAFO) ( R
2 from 0.939 to 0.999) had a better fit on the dissipation of both residue state I and II than SFOK. TCs in these states were likely sequestered into a dormant undegradable phase since no degradation product was detected during the entire experiment. In addition, the overall 50 % dissipation values (i.e., stability) of the three TCs were OTC > TC > CTC. The TCs tend to dissipate faster in the high water content and organic matter soil.
研究领域:
环境科学
·
微生物学
·
药理学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Rong Deng,Zhilan Wang,Jing Chen,Lianqin Zhu,Yaqin Shi,Wenli Xue
Ti 3 C 2 QDs with good water solubility and photoluminescence properties was prepared by nitrogen and phosphorus doping (N,P-Ti 3 C 2 QDs). The probe has a fluorescence emission peak at 420 nm and emits bright blue fluorescence, which can distinguish and detect two antibiotics with similar structures, chlortetracycline (CTC) and tetracycline (TC). The fluorescence enhancement effect can be realized by the interaction with CTC. The linear range is 2–22 μM, and the detection limit is as low as 0.53 μM. And the change of fluorescent color from bright blue to bright purple can be observed with the naked eye. At the same time, with the addition of TC, the fluorescence of N,P-Ti 3 C 2 QDs can be quenched by static quenching effect, and the fluorescence color changes from bright blue to yellowish green. The detection range is 4.1–20.5 μM, and the detection limit is as low as 0.16 μM.Therefore, on this basis, a strategy for simultaneous detection and recognition of CTC and TC is proposed. The method has been successfully applied to the determination of CTC and TC in milk samples. This paper provides a new detection method for the identification of tetracycline antibiotics and taps the application potential of Ti 3 C 2 QDs in food detection.
研究领域:
分析化学
·
食品安全
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2023
·
IF 6.1
Yunyan Ren,Zhefeng Fan
Among the tetracycline antibiotics, chlortetracycline (CTC) is the most frequently used antibiotic except for tetracycline (TC) for enhancing the ability of the organism to fight bacterial infections. The poor metabolism and degradability of CTC can cause serious health effects. Most studies have focused on the detection and analysis of TC, and research on CTC is relatively scarce. This is because the structures of CTC and TC and oxytetracycline (OTC) are extremely similar, and even indistinguishable. In this study, CTC was used as a template molecule and a molecularly imprinted layer was coated on the surface of highly fluorescent N-CDs using a reversed-phase microemulsion method to form N-CDs@MIPs. It was possible to specifically identify CTC without the influence of TC and OTC, which are extremely similar in structure. By comparing with the non-imprinted polymer (N-CDs@NIPs), it exhibited high sensitivity and selectivity with an imprinting factor of 2.02. And it was used in the determination of CTC in milk with recoveries and relative standard deviations of 96.7%–109.8% and 0.64%–3.27%, respectively, with high accuracy and precision. The specificity of the measurement is excellent compared with other assays, and it is a valid and reliable assay.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2022
·
IF 5.122
Hongxia Chen,Junyu Chen,Chao Yuan,Long Yu,Mingtai Sun,Dejian Huang,Shaoquan Liu,Suhua Wang
Although development of sensors being capable of a specific tetracycline antibiotics detection has been extensively documented recently, total quantification of this harmful antibiotics seems to be more imperative from the perspective of environmental monitoring. In this work, 5-aminoisophthalic acid-based metal-organic framework (Zn/H 2 aip) probe was presented for total tetracyclines detection including tetracycline (TC), oxytetracycline (OTC), doxycycline (DOX) and chlortetracycline (CTC) based on fluorescence method. The prepared probe solution displayed a fluorescence quenching response at 403 nm together with an obvious fluorescence enhancement at about 520 nm to the four tetracyclines, realizing a ratiometric fluorescence response of the probe to the targets. In addition to mechanism study behind this phenomenon by experiments including UV–vis, fluorescence and infrared spectroscopy, the stability and reusability of the proposed probe was investigated for the evaluation of its potential in practical application.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
OPTICS AND SPECTROSCOPY
·
2014
·Vol. 117
·期 2
·250-255
·
IF 0.673
Li Jie,Fan Shumin,Li Zhigang,Xie Yuanzhe,Wang Rui,Ge Baoyu,Wu Jing,Wang Ruiyong
The interaction between tetracycline antibiotics and gold nanoparticles was studied. With citrate-coated gold nanoparticles as colorimetric probe, a simple and rapid detection method for doxycycline and oxytetracycline has been developed. This method relies on the distance-dependent optical properties of gold nanoparticles. In weakly acidic buffer medium, doxycycline and oxytetracycline could rapidly induce the aggregation of gold nanoparticles, resulting in red-to-blue (or purple) colour change. The experimental parameters were optimized with regard to pH, the concentration of the gold nanoparticles and the reaction time. Under optimal experimental conditions, the linear range of the colorimetric sensor for doxycycline/oxytetracycline was 0.06–0.66 and 0.59–8.85 μg mL −1 , respectively. The corresponding limit of detection for doxycycline and oxytetracycline was 0.0086 and 0.0838 μg mL −1 , respectively. This assay was sensitive, selective, simple and readily used to detect tetracycline antibiotics in food products.
研究领域:
分析化学
·
纳米技术
·
药物分析
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2020
·
IF 4.302
Hui Yu,Yongfeng Zhu,Aiping Hui,Fangfang Yang,Aiqin Wang
The aqueous foam template without any solvent and only using the particles stabilizer has attracted much attention for preparation of the porous adsorbents. Herein, a novel porous adsorbent was fabricated via thermal-initiated polymerization of Pickering aqueous foams, which was stabilized by the natural sepiolite (Sep) and pine pollen, and utilized for the removal of antibiotic from aqueous solution. The stabilizing mechanism of Pickering aqueous foam of that the Sep was modified with the leaching substance from pine pollen and arranged orderly around the bubble to form a dense “shell” structure was revealed. The adsorbents possessed the hierarchical porous structure and excellent adsorption performance for antibiotic of chlorotetracycline hydrochloride (CTC) and tetracycline hydrochloride (TC). The equilibrium adsorption capacities of CTC and TC were achieved with 465.59 and 330.59 mg/g within 60 min at 25°C, respectively. The adsorption process obeyed Langmuir model and pseudo-second-order adsorption kinetic model. This work provided eco-friendly approach for fabricate porous adsorbents for wastewater treatment .
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Chenglin Liu,Zhijie Liang,Adeyemi Adeleye,Fuyi Cui,Zhiwei Zhao
N -nitrosodimethylamine (NDMA), a nitrosamine , is a typical nitrogenous disinfection byproduct . In this study, NDMA formation potential and mechanism, from tetracycline and oxytetracycline (as model precursors) in an ammonium-contaminating water, were investigated. The results indicated that both monochloramine and dichloramine played a vital role in NDMA formation. Additionally, the determination of NDMA formation potential (NDMA FP) at a wide range of pH showed that the unprotonated tetracycline tended to have a higher NDMA conversion ratio. We also found that the dissociation of hydroxyl on the meta-position of dimethylamine group promoted on NDMA formation. The detection of significant intermediate products showed that N-chloro unsymmetrical dimethylhydrazine (UDMH-Cl) and sequences of chlorine substitution products were key intermediates, indicating that NDMA formation occurred via the UDMH mechanism pathway. These results improve the knowledge on NDMA formation mechanism and the control strategies during the disinfection of ammonium-containing water.
研究领域:
环境科学
·
公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2020
·
IF 3.306
Sarenqiqige Bao,Haiou Liang,Chunping Li,Jie Bai
A high-efficiency BiOCl/TiO 2 heterostructure hollow-tube (BTHTs) with type-II was successfully synthesized by simple electrospinning technology and solvothermal process loaded with BiOCl nanosheets on TiO 2 hollow-tubes (THTs). The results of morphology show that, the surface of THTs was covered by flaky BiOCl like pieces of flower. Optical and photo-electrochemical characterizations show that the composite catalyst has visible light absorption and high photo-generated electron-hole separation ability. Comparing with THTs and powder BiOCl, the BTHTs composites exhibited highest adsorption capacity and photocatalytic activity in the photodegradation of Tetracycline (TC), in visible light (λ ≥ 420 nm). The composites could also degrade Chlortetracycline, Demeclocycline, Doxycycline and Oxytetracycline efficaciously. Additionally, trapping experiments were carried out, and the possible photocatalytic degradation mechanism was proposed.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SPECTROSCOPY
·
2023
·
IF 3.5
Yang Chen,Xiu-Fang Yan,Jun Bin,Yan-Mei Liang,Fu-Xin Wang,Min Yang,Chao Kang
Probes such as carbon dots (C-dots) have extensive and important applications in the quantitative analysis of complex biological and environmental systems. However, the development of probes is often hindered by incomplete selectivity, i.e., a probe that responds to one substance is also prone to respond to coexisting structurally similar substances. Therefore, the above dilemma often leads to be developed as semi-selective probes, so that the development of probes is abandoned halfway. This work shows how a semi-selective probe can enhance selectivity by combining a proper multivariate calibration model. Primarily, we developed a semi-selective fluorescent probe that responded to tetracyclines (TCs) with discarded tobacco leaves. Then, we introduced the multivariate quantitative fluorescence model (QFM) to enhance its selectivity and solve the problem of fluorescence spectral shift. For the determination of chlortetracycline (CTC) with this semi-selective C-dots probe in mineral and lake water samples and compared to the traditional quantitative model, the introduced QFM resulted in an average relative predictive error (ARPE) in mineral water spiked samples decreased from 57.1 to 5.6%, which reduced the ARPE in the lake water spiked samples from 18.1 to 4.7%. The above results show that the QFM-assisted semi-selective probe C-dots strategy (QFMC−dots) can enhance selectivity, and QFMC−dots achieved high-selective and accurate determination of CTC in interfering mineral and lake water samples, with the limit of detection and limit of quantitation of 0.55 and 1.66 μM, respectively. The proposed strategy of enhancing selectivity by introducing a proper multivariate calibration model can reduce the difficulty and increase success rate of developing probes, which can be expected to provide an interesting alternative for the development of probes, especially when encountering semi-selective problems.
研究领域:
分析化学
·
环境科学
·
生物技术
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DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 31
·期 4
·6411-6424
·
IF 5.8
Li Yujia,Bi Erping
The interactions between organic pollutants and iron minerals play an important role in their environmental fate. In this study, the effects of low-molecular-weight organic acids (LMWOAs) on the adsorption and degradation of tetracycline (TC) on goethite were investigated. Tartaric acid (TA) was taken as the representative of LMWOAs to study the influencing mechanism through batch experiments and microscale characterization. In addition, the properties of TC-TA clusters under different pHs were determined by density functional theory (DFT) calculations. The results showed that all five LMWOAs inhibited TC adsorption and degradation. The preferential adsorption of TA on goethite changed TC adsorption from inner spherical to outer spherical complexation and mainly inhibited TC adsorption and degradation of the singly coordinated hydroxyl group. TC degradation rate decreased from 0.0287 to 0 h −1 in the first stage. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy results showed that TA could influence the interactions of amide groups, C = O on the A-ring, and dimethylamino group of TC with goethite, and the formation of ≡Fe(II) was inhibited. In addition to competing for the effective sites, the effects of complexation between TA and TC in solution should be considered. According to DFT calculations, hydrogen bonds could be formed between the carboxyl group of TA and the H atom of TC at different pH. These findings can provide evidence for estimating the contribution of adsorption and degradation to TC removal by iron oxides with the coexistence of LMWOAs in a soil–water environment. Graphical Abstract
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yulin Chen,Danying Xing,Yang Sui,Zexin Liu,Xiaodan Zhao
Tetracycline, representing as the typical antibiotics, is widely utilized and commonly detected at high concentrations in aquatic environments. Advanced oxidation technologies leveraging the high reactivity of radicals generated by activated peracetic acid via iron-based heterogeneous activators exhibit excellent effectiveness for tetracycline removal, yet this process is hampered by the slow reduction of >Fe(III) to >Fe(II). Regarding the redox reversibility of CuFeS 2 and the electron-donating properties of sulfur components in accelerating the reduction of >Fe(III) to >Fe(II), the combination of CuFeS 2 and peracetic acid (simplified as the CuFeS 2 /PAA system) is developed. At a low CuFeS 2 dosage of 0.03 g L −1 , tetracycline was degraded with a degradation rate of 0.167 min −1 under neutral conditions, which was more effective than CuS and FeS 2 . The efficacy is consistent the electron-transferring ability of CuFeS 2 , CuS and FeS 2 . CuFeS 2 exhibits enhanced catalytic activity due to its unique redox properties, in which >Fe(II) sites facilitate PAA activation, while >Cu(I) is essential for >Fe(III) reduction, creating a synergistic interaction that accelerates >Fe(III) reduction to >Fe(II). As the main radical generated, CH 3 C( O )OO• plays a key role in tetracycline degradation. It is also indicated that different water quality parameters slightly impact tetracycline degradation, highlighting the system's robust practical application potential. By facilitating the rapid reduction of >Fe(III) to >Fe(II), the CuFeS 2 /PAA system can achieve effective tetracycline degradation. This study is expected to provide a feasible method for the treatment of the water and wastewater containing antibiotics.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2012
·
IF 4.805
Hongliang Tan,Baoxia Liu,Yang Chen
The metal–organic coordination polymer has emerged as a new family of functional nanomaterials. In this work, we prepared a luminescence coordination polymer based on spontaneous self-assembling of nucleotide (AMP) and Eu3+ ions in aqueous solution. After antenna ligand tetracycline (Tc) was introduced to the coordination polymer (AMP/Eu), a strong europium luminescence was observed due to the intramolecular energy transfer from tetracycline to Eu3+. Because of the hydrophobic environment of the polymer interior, the luminescence intensity of AMP/Eu incorporated tetracycline (AMP/Eu–Tc) was 30 times higher than that of AMP/Eu in a solution containing the same amount of tetracycline. AMP/Eu–Tc displays a long emission lifetime, excellent dispersion, and stability in aqueous solution. The coordination polymers based on antenna ligands possess great potential in the applications of ultrasensitive time-resolved fluorometric assays and biological imaging.
研究领域:
材料科学
·
生物医学
✓ 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）