ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
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2018
·Vol. 38
·期 3
·575-584
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IF 3.179
Zhang Yuxuan,Guo Peiyong,Wu Yanmei,Zhang Xiaoyan,Wang Meixian,Yang Simin,Sun Yinshi,Deng Jun,Su Haitao
Phenicol antibiotics, such as chloramphenicol, thiamphenicol, and florfenicol, are commonly used in the veterinary and aquaculture fields to treat diseases and have frequently been detected in aquatic environments. Nevertheless, there is limited information regarding the effects of phenicol antibiotics on aquatic nontarget species. Thus, the present study aims to investigate the long-term (21-d) influence on the reproduction and growth of and the acute (24-h) oxidative response and tissue damage in the crustacean Daphnia magna after exposure to phenicol drugs, including their environmental concentrations. The results indicate that D. magna exposed to florfenicol are likely to cause more adverse effects than those exposed to chloramphenicol and thiamphenicol over long-term (21-d) exposures. Furthermore, changes in biochemical biomarkers such as malondialdehyde (MDA), catalase (CAT), and reduced glutathione (GSH) induced by individual and mixtures of phenicol antibiotics were also observed. Low concentrations of chloramphenicol, thiamphenicol + florfenicol, and chloramphenicol + thiamphenicol significantly increased the MDA levels of D. magna after 24-h exposures, causing cellular oxidative damage in the animals. In addition, discrepancies between CAT activities and GSH levels were observed, underscoring the need to evaluate multiple indicators of oxidative stress in toxicological studies using D. magna as a model. Environ Toxicol Chem 2019;38:575–584. © 2018 SETAC
研究领域:
环境毒理学
·
生态学
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Qi Xiu,Shan Zhao,Xiaowei Yang,Shiwen Sun,Yinshun Dai,Liangfeng Duan,Lin He,Maoxia He,Chao Song,Shuguang Wang
In the practical application process, the reactivity and performance of ZVI-based materials when being placed in the air for a few days, weeks or months was worth studying. Most studies on the aging of ZVI were carried out in solution, only considering the reactivity of ZVI in aqueous solution. In this work, we investigated the degradation of chloramphenicol (CAP) in sulfuric acid (SA) and citric acid (CA) systems by sulfidated micro-sized zero-valent iron (S-mZVI) in air with different aging days. The results showed that with the increase of aging days in the air, the degradation effect of S-mZVI on CAP in different acid systems showed a similar trend (first increasing and then decreasing), the removal effect of S-mZVI on CAP reached the best within the aging time of 5–9 days. The degradation path of CAP could be divided into oxidation path and reduction path. The XPS and XRD characterization results of the materials on different aging days indicated that the characteristic peak of Fe 3 O 4 was detected on the surface of the materials with the increase of aging days, which may be the reason for changing degradation efficiencies of CAP by S-mZVI for different aging days. In addition, in different systems of SA and CA, the degradation curves of CAP differed. This might be caused by two reasons: (1) CA could adsorb on S-mZVI while SA could not; (2) The initial pH of the CA system played a more significant effect on CAP degradation compared to that of the SA system.
研究领域:
环境科学
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化学
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2015
·
IF 4.169
Mian Wu,Youhong Ai,Baizhao Zeng,Faqiong Zhao
Here we report a facile in situ solvothermal growth method for immobilization of metal-organic framework–ionic liquid functionalized graphene (MOF-5/ILG) composite on etched stainless steel wire. The X-ray diffraction spectra, scanning electron microscopy and transmission electron microscopy images showed that the metal organic framework possessed good crystal shape and its structure was not disturbed by the introduction of ILG. Moreover, the covalent bond established between the amino group of ILG and the carboxylic group of the metal organic framework improved the mechanical stability and structure uniformity of the microcrystals. The obtained material combined the favorable attributes of both metal-organic framework and ILG, having high surface area (820 m 2 /g) and good adsorption capability. Its adsorption properties were explored by preconcentrating chloramphenicol and thiamphenicol from aqueous solutions prior to gas chromatography-flame ionization detection. The MOF-5/ILG exhibited high enrichment capacity for the analytes as they could interact through π–π and H-bonding interaction. Under the optimum conditions, good linearity (correlation coefficients higher than 0.9981), low limits of detection (14.8–19.5 ng/L), and good precision (relative standard deviations less than 6.0% ( n = 5)) were achieved. The MOF-5/ILG composite displayed durable property. The method was applied to the determination of two antibiotics in milk, honey, urine and serum samples with acceptable relative recoveries of 82.3–103.2%.
研究领域:
分析化学
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材料科学
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DOI
PubMed
高影响因子
Journal of the Iranian Chemical Society
·
2016
·Vol. 13
·期 10
·1759-1765
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IF 1.3
Wang Tingting,Zhang Dan,Zhang Ziliang,Han Juan,Wang Yun,Tang Xu
As a novel and green pretreatment technique to trace samples, polyoxyethylene cetyl ether (POELE20)–(NH 4 ) 2 SO 4 aqueous two-phase extraction system was coupled with high-performance liquid chromatography to analyse synchronously chloramphenicol (CAP), thiamphenicol (TAP) and florfenicol (FF) in chicken and pork samples. It was found that the extraction efficiency ( E %) and enrichment factor ( F ) of the three antibiotics were influenced by the types of salts, the concentration of salt, the concentration of POELE20, system temperature and pH. The final optimal condition was as following: the phase-forming salt is (NH 4 ) 2 SO 4 , the concentration of (NH 4 ) 2 SO 4 is 0.141 g mL −1 , the concentration of POELE20 is 0.03 g mL −1 , the temperature is 298.15 K, and the system pH is 4.5. This POELE20–(NH 4 ) 2 SO 4 ATPS was applied to separate and enrich three antibiotics in real sample under the optimal conditions, and it was found that the recovery was 97.20–102.00 % with a RSD of 0.61–4.85 %. The limit of detection for CAP, TAP and FF were 0.10, 0.50 and 0.50 μg kg −1 , and the limit of quantitation for CAP, TAP and FF was 0.15, 1.50 and 1.50 μg kg −1 . Seven times the experiments were used to verify the repeatability and veracity of this method, and the RSD for the intra-day and inter-day were 1.13–3.22 and 1.74–4.72 %.
研究领域:
分析化学
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食品科学
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药物分析
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DOI
高影响因子
RSC Advances
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2020
·Vol. 10
·期 54
·32919-32926
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IF 3.119
Pengli Zuo,Zhongguang Chen,Fengling Yu,Jinyu Zhang,Wei Zuo,Yanli Gao,Qingyou Liu
Heteroatom doping in carbon dots (CDs) was found to be an efficient way to regulate the structure of electronic energy levels and enhance the fluorescence characteristics of CDs. Nevertheless, most reported fabrication processes of heteroatom-doped CDs are rigorous and complex. Herein, a facile and novel strategy was developed to rapidly prepare nitrogen and phosphorus co-doped CDs (N,P-CDs) using acetic acid as the carbon source, and arginine, 1,2-ethylenediamine (EDA) and diphosphorus pentoxide as the dopants, respectively. The optical, morphological and structural characterizations of the synthesized N,P-CDs were investigated via UV and photoluminescence spectroscopy, X-ray photoelectron spectroscopy, TEM, and FT-IR spectroscopy. The N,P-CDs display outstanding fluorescence stability under high ionic strength (1.6 M KCl), and long time UV irradiation, indicating that they can be used as favorable candidates for fluorescent probes. The fluorescence of N,P-CDs was selectively quenched by chloramphenicol (CAP) with a short response time. The linear range of the response to CAP was from 0.8 to 70 μM with a limit of detection of 0.36 μM (S/N = 3). Notably, the fabricated N,P-CDs were employed for the highly selective and sensitive detection of CAP in milk samples, indicating their potential applications in biologically related areas.
研究领域:
分析化学
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生物医学
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DOI
PubMed
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 11
·2950
·
IF 5.076
Weinan Xing,Qi Liu,Jingyi Wang,Siye Xia,Li Ma,Ran Lu,Yujing Zhang,Yudong Huang,Guangyu Wu
Recently, biomass-based materials have attracted increasing attention because of their advantages of low cost, environment-friendly and nonpollution. Herein, the feasibility of using corn stalk biomass fiber (CF) and Fe3O4embedded chitosan (CS) as a novel biomass-based adsorbent (CFS) to remove chloramphenicol (CAPC) from aqueous solution. Structure of CFS was characterized by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) and zeta potential techniques. The effects of solution pH, adsorption time and ion strength on the adsorption capacity were examined. Adsorption isotherms obtained from batch experiments were better fitted by Langmuir model compared with Freundlich model, Dubinin–Radushkevich model and Temkin model. Adsorption kinetic data matched well to the pseudo-second order kinetic model. CAPC adsorption was endothermic, spontaneous, and entropy-increasing nature on CFS. In addition, the CFS could be separated by an external magnetic field, recycled, and reused without any significant loss in the adsorption capacity of CAPC. Based on these excellent performances, there is potential that CFS can be considered as a proficient and economically suitable material for the CAPC removal from the water environment.Keywords:biomass;agricultural waste;chloramphenicol removal;adsorption
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2017
·
IF 3.743
Xiuzhen Zhu,Yuan Gao,Qinyan Yue,Yujiao Kan,Wenjia Kong,Baoyu Gao
Potassium tartrate (C 4 H 6 K 2 O 7 ) was utilized as a novel activating agent to prepare activated carbon with relatively high specific surface area by using less activating agent and activation time from marine waste–green alga ( Enteromorpha prolifera ) for the first time. The influences of activation temperature, impregnation ratio and activation time on the pore structure were investigated to obtain the optimum conditions (activation temperature: 700 °C, impregnation ratio: 1:1, and activation time: 30 min). Meanwhile, the activation temperature was evaluated to be the essential factor that dominated the form of pore structure in activated carbon. The green alga-based activated carbon that was prepared under optimum conditions has shown the high surface area of 1692 m 2 /g and total pore volume of 1.22 cm 3 /g, which could be used as an effective adsorbent to remove chloramphenicol. The thermodynamic data of chloramphenicol were well fitted by Langmuir isotherm model and the green alga-based activated carbon has showed high adsorption capacity of 709.2 mg/g towards chloramphenicol.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 49
·74306-74318
·
IF 5.19
Chen Aixia,Zhang Yixuan,Wei Xiao,Pang Jiaju,Hu Ruirui,Guan Juanjuan
Porous carbon is an excellent absorbent for pollutants in water. Here, we report a breakthrough in performance of porous carbon based on lignin prepared using sodium lignosulfonate (SLS), potassium carbonate and melamine as precursor, activator and nitrogen source, respectively. A series of characterization tests confirmed that in-situ nitrogen doping greatly enhanced porous structure, resulting in a specific surface area of 2567.9 m 2 g −1 and total pore volume of 1.499 cm 3 g −1 , which is nearly twice that of non-nitrogen-doped porous carbon. Moreover, adsorption experiments revealed that at 303 K, the saturated adsorption capacity of chloramphenicol was as high as 713.7 mg g −1 , corresponding to an improvement of 33.7%. Further, the prepared porous carbon exhibited a strong anti-interference against metal ions and humic acid. The adsorption process was confirmed to be an endothermic reaction dominated by physical adsorption, indicating that an increase in temperature is conducive to adsorption. The results of this study show that nitrogen-doped lignin-based porous carbon prepared by in-situ doping is a promising material to significantly alleviate water pollution owing to its low cost, excellent pore structure and good adsorption properties.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2017
·
IF 6.216
Yanlong Sun,Bo Zhang,Tong Zheng,Peng Wang
To reduce the secondary pollution of volatile organic compounds generated from adsorbent regeneration, a regeneration method for granular activated carbon (GAC) saturated with chloramphenicol is studied. The saturated GAC is regenerated by microwave and ultraviolet irradiation which radiated from electrodeless lamps activated by microwave. The existence of ultraviolet rays can affect the degradation of chloramphenicol, and it is analyzed by adsorption capacity recovery percentage, mineralisation percentage and the amount of inorganic chloride. The saturated GAC is regenerated in microwave reactor at 2450 MHz for 10 min. The mineralisation percentage increases to 37% from 5% when adds the electrodeless lamp into the regeneration reactor. Besides, 83% of the total chloride in chloramphenicol can transform into inorganic chloride. Add ultraviolet radiation in microwave regeneration reactor can enhance the oxidizability of microwave regeneration method. Furthermore, the adsorption ability of GAC can maintain at a high level after five absorption/regeneration cycles. These results show a great potential use of microwave and ultraviolet irradiation to regenerate activated carbon saturated with chlorinated organic compound. This regeneration method can reduce the risk of secondary pollution of chlorinated organic compound during adsorbent regeneration.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Cong Li,Feng Luo,Haojie Duan,Feilong Dong,Xiaoyang Chen,Mingbao Feng,Zuoran Zhang,Leslie Cizmas,Virender K. Sharma
This paper presents the degradation of chloramphenicol (CAP) by chlorine and chlorine dioxide (ClO 2 ) in tap water in a pilot-scale water distribution system (WDS) containing loops of three different pipe materials (stainless steel, ductile iron , and polyethylene). Greater degradation of CAP was seen with chlorine than with chlorine dioxide. After 180 min in the ductile iron loop of the WDS, the percent degradation of CAP by 2.0 mg/L of chlorine or ClO 2 was 76% and 52%, respectively. The degradation of CAP by chlorine in the WDS was investigated under various conditions, including chlorine concentrations of 1.0–4.0 mg/L, and varying pipe materials, flow velocity, and temperature. Degradation of CAP under different conditions could be fitted by first-order kinetics, and the determined first-order rate constants ( k , min −1 ) increased with an increase in chlorine concentration, flow velocity, and temperature. The degradation of CAP in different pipes followed the order stainless steel loop > ductile iron loop > polyethylene loop. Identified oxidized products of the chlorination of CAP were in agreement with proposed reaction pathways, which were also theoretically confirmed by quantum chemical calculations. Formation of three disinfection byproducts (chloroform, bromodichloromethane, and dibromochloromethane) was observed, with increases of 7.7, 0.76, and 0.39 µg/L, respectively, after 160 min.
研究领域:
环境科学
·
公共卫生
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2017
·
IF 2.625
Bo Gao,Weiping Chen,Shaonan Dong,Jiadong Liu,Tingting Liu,Lei Wang,Mika Sillanpää
Functional PPy-ZnIn 2 S 4 composite was prepared via facile hydrothermal method in the presence of PPy powder. The X-ray diffraction (XRD) pattern showed single hexagonal phase in pure ZnIn 2 S 4 and mixed phases of hexagonal and cubic in PPy-ZnIn 2 S 4 composite. The coexistence of hexagonal and cubic phase in PPy-ZnIn 2 S 4 composite can be advantageous to charge separation. The absorbance within visible light range was enhanced by PPy-ZnIn 2 S 4 composite compared with pure ZnIn 2 S 4 . The time required for complete removal of chloramphenicol by PPy-ZnIn 2 S 4 composite (60 min) was shorter than pure ZnIn 2 S 4 (120 min), indicating better deep degradation. 48.5% TOC was achieved by PPy-ZnIn 2 S 4 after 3 h photocatalytic degradation, which was two times higher than ZnIn 2 S 4 (23.5%).
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
MOLECULES
·
2021
·Vol. 26
·期 19
·5965
·
IF 4.412
Xiaoxiao Chen,Yang Liu,Pu Li,Yichen Xing,Chaobiao Huang
A dual recognition system with a fluorescence quenching of quantum dots (QDs) and specific recognition of molecularly imprinted polymer (MIP) for the detection of chloramphenicol (CAP) was constructed. MIP@SiO2@QDs was prepared by reverse microemulsion method with 3-aminopropyltriethoxysilane (APTS), tetraethyl orthosilicate (TEOS) and QDs being used as the functional monomer, cross-linker and signal sources, respectively. MIP can specifically recognize CAP, and the fluorescence of QDs can be quenched by CAP due to the photo-induced electron transfer reaction between CAP and QDs. Thus, a method for the trace detection of CAP based on MIP@SiO2@QDs fluorescence quenching was established. The fluorescence quenching efficiency of MIP@SiO2@QDs displayed a desirable linear response to the concentration of CAP in the range of 1.00~4.00 × 102μmol × L−1, and the limit of detection was 0.35 μmol × L−1(3σ,n= 9). Importantly, MIP@SiO2@QDs presented good detection selectivity owing to specific recognition for CAP, and was successfully applied to quantify CAP in lake water with the recovery ranging 102.0~104.0%, suggesting this method has the promising potential for the on-site detection of CAP in environmental waters.Keywords:molecular imprinting;chloramphenicol;quantum dots;fluorescence quenching
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）