ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Baikerouzi Baihetiyaer,Nan Jiang,Xianxu Li,Jie Song,Jun Wang,Xiaoteng Fan,Yajie Zuo,Xianqiang Yin
Biodegradable microplastics (BMPs) pose serious environmental problems to soil organisms, and their adsorption capacity might make pesticides more dangerous for soil organisms. Therefore, in this study, polylactic acid (PLA) BMPs and imidacloprid (IMI) were used as a representative of BMPs and pesticides, respectively. Eisenia fetida was used as a test animal to investigate the effects of environmentally relevant concentrations of single and compound contaminated PLA BMPs and IMI on mortality, growth, number of offspring, tissue damage, and gut microorganisms of E.fetida . Exposure to PLA BMPs treatment and PLA BMPs + IMI treatment resulted in a sustained increase in E.fetida mortality, reaching 16.7% and 26.7%, respectively. The growth inhibition rate of single treatments was significantly increased. The compound contamination had the greatest effect on E.fetida offspring compared to the control. PLA BMPs and IMI cause histological damage to E.fetida, with the compound treatment causing the most severe damage. Based on the results of 16S sequencing, the bacterial communities in E.fetida gut and soil treated to PLA BMPs and IMI were significantly different. PLA BMPs + IMI treatment suppresses the abundance and diversity of E.fetida gut microorganisms, disrupting the homeostasis of bacterial communities and causing immune and metabolic dysfunction. These findings highlight the more severe damage of combined PLA BMPs and IMI pollution to E.fetida , and help to assess the risk of earthworm exposure to environmentally relevant concentrations of PLA BMPs and IMI.
研究领域:
环境科学
·
土壤生态学
·
微生物学
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DOI
PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Bin Yang,Jia Liu,Xin Liu,Shiyue Niu,Fengming Zhang,Yuting Wang,Daqian Song,Shuyun Bi
The high efficient surface-enhanced Raman scatterring (SERS) methods to detect thiacloprid and imidacloprid were established using ZIF-8-wrapped Ag nanoparticles (AgNPs) modified with β -cyclodextrin ( β -CD). The substrate of ZIF-8/ β -CD@AgNPs was characterized by ultraviolet visible spectra (UV–vis), thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM). The interaction between the substrate and thiacloprid/imidacloprid was also explored. The optimum measurement conditions were obtained by response surface model based on single-factor experiments. Enhancement factors (EFs) of thiacloprid and imidacloprid were respectively 2.29 × 10 6 and 2.60 × 10 6 . A good linearity between the scattering intensity and the concentration of thiacloprid/imidacloprid within 3–1000 nmol L −1 /6–400 nmol L −1 was established. The interference experiments indicated that the methods had good selectivity . The SERS methods were successfully applied to detect thiacloprid and imidacloprid in several vegetables samples. The recoveries ranged from 95.5 % to 105 % (n = 5). The detection limits (LODs) (S/N = 3) for thiacloprid and imidacloprid were 1.50 and 0.83 nmol L −1 , respectively.
研究领域:
分析化学
·
环境科学
·
食品安全
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产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2021
·Vol. 13
·期 33
·3649-3658
·
IF 2.896
Yitao Lv,Jingming Sun,Sen Qiao,Min Zhang,Juxiu Li
The development of sensitive, facile, cost-effective and eco-friendly sensors is essential for monitoring imidacloprid (IDP) residue on a large scale. Compared with popular modification of electrodes with advanced materials, electrochemical activation is promising at this point. In this paper, we found that strongly basic electrolytes (e.g. KOH and K3PO4) and applying cyclic potential during the activating process are beneficial to greatly amplify the electro-reduction response of IDP by nearly 16 times. Combining the characterization of activated electrodes with electrochemical behavior analysis of IDP, it is speculated that specific oxygen-contained functional groups were formed to bond with IDP molecules, leading to fast electron transfer kinetics. Then a sensitive IDP sensor has been developed with a low limit of detection (LOD) of 0.03 μM in the range of 0.1–100 μM. The methodological evaluation including reproducibility, stability and recovery has been also carefully studied, verifying the potential of proposed activated electrodes for application in rice samples.
研究领域:
分析化学
·
环境科学
·
食品科学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Mei Du,Qian Yang,Weimei Liu,Yuan Ding,He Chen,Xiude Hua,Minghua Wang
Imidacloprid is the most widely used neonicotinoid insecticide and has been reported to pose a threat to ecological security and human health. Therefore, simple-to-operate and highly sensitive methods for the detection of trace levels of imidacloprid are necessary. Here, we isolated two phage-borne peptides that compete with imidacloprid to bind the monoclonal antibody (mAb) 3D11 from phage display peptide libraries. A phage-enzyme-linked immunosorbent assay (P-ELISA) and two phage time-resolved fluoroimmunoassays (P-TRFIAs) for the detection of imidacloprid were developed using the phage-borne peptides as substitutes for chemically synthesized antigens. After systematic optimization, the half-maximum inhibition concentrations (IC 50 ) of the P-ELISA, P-TRFIA-1, and P-TRFIA-2 were 0.067 ng mL −1 , 0.085 ng mL −1 , and 0.056 ng mL −1 , respectively. Based on their IC 50 values, the sensitivities of the P-ELISA and P-TRFIAs were more than four times greater than those of previous immunoassays. Additionally, the immunoassays showed satisfactory recovery in the detection of spiked samples and good correlation with high performance liquid chromatography (HPLC) for the detection of samples containing incurred residues.
研究领域:
环境科学
·
分析化学
·
农业科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2022
·
IF 3.571
Ruixia Li,Taotao Zhe,Mingyan Li,Jingyan Li,Fan Li,Feier Bai,Lihua Li,Kaixuan Ma,Sihan Shen,Li Wang
Imidacloprid (IDP) residue in modern agricultural production seriously endangers human health and environmental safety. The establishment of a rapid and efficient method for the detection of IDP residue can effectively prevent its harm to human health. Herein, we demonstrate the carbon cloth (CC) prepared by a high-temperature annealing strategy possesses enhanced electrochemical performance, which could be directly used in electrochemical IDP sensing. Annealed carbon cloth (ACC) is endowed with higher defects, rougher surfaces, more functional groups, more hydrophilic surface , and increased ion-accessible surface area. Furthermore, the ACC electrode shows superior electrocatalytic reduction activity towards IDP, possessing a wide linear range of 5–100 μM, a low detection limit of 0.04 μM, and high sensitivity of 35.58 μA mM −1 cm −2 . Meanwhile, this sensor can be applied for sensing IDP in grapes and apples with a good recovery of 96.8–104.1%. Compared with other modified electrodes , the ACC electrode has the advantages of no binder, no complicated modification, excellent detection effect, low cost, and easy large-scale production. Consequently, this work designs a self-supporting metal-free electrode with high electrochemical performance, providing a new idea for the development of environmentally friendly IDP sensors.
研究领域:
分析化学
·
环境科学
·
农业科学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Hui Shu,Tingrun Lai,Zhichao Yang,Xuechun Xiao,Xiumin Chen,Yude Wang
High sensitivity and ultra-trace detection of imidacloprid are important and challenging in the field of food. In this study, we prepared a Fe-rich FeCoNi-MOF in-situ modified nickel foam working electrode by one-step hydrothermal method, and achieved a highly sensitive detection of the imidacloprid. The characterization techniques confirmed that Fe-rich FeCoNi-MOF had excellent crystallinity, tighter structure, and exposed rich active sites. The detection results showed that Fe-rich FeCoNi-MOF electrochemical sensor had a minimum detection limit of 0.04 pmol/L (100 times lower than that of the bioelectrochemical sensors), a wide response range (1 pmol/L–120 μmol/L), and high sensitivity (124 μA pmol/L -1 cm −2 ). These advantages of the electrochemical sensor were revealed theoretically by the valence change of active metal and the first principle calculation. Lastly, the Fe-rich FeCoNi-MOF electrochemical sensor was applied to detect imidacloprid in apple, fresh tea leaves, tomato, cucumber, and had an excellent recovery of 98–102.8 %.
研究领域:
食品科学
·
分析化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xinzhi Wang,Zhenguo Chen,Yutian He,Xiaohui Yi,Chao Zhang,Qiao Zhou,Xuezhu Xiang,Yunan Gao,Mingzhi Huang
Imidacloprid (IMI) which has been widely detected in the natural water environment is potentially genotoxic to humans and should be effectively eliminated. Persulfate-based advanced oxidation processes are considered to be reliable means aiming at organic pollutants degradation, while an efficient catalyst is urgently needed for the activation of the reaction. As a two-dimensional material, 1T-MoS 2 is expected to be applied for the activation of persulfates due to its abundant active sites and good electrical conductivity. Therefore, in this study, 1T-MoS 2 was synthesized by a simple and safe two-step solvothermal reaction and proposed as an emerging activator of peroxymonosulfate (PMS) for the degradation of IMI. It was found that 1T-MoS 2 has significantly better catalytic performance on PMS than 2H-MoS 2 and Bulk-MoS 2 , reaching. 76.4 % at pH = 3. The degradation rate of IMI reduced under alkaline conditions due to the inhibition of catalytic processes. Among the different coexisting anions, H C O 3 - had the greatest degree of interference and inhibition to the degradation process, resulting in the lowest IMI degradation rate for only 42.45 %. Quenching experiments and EPR analysis showed that S O 4 - ∙ and OH were the main reactive oxygen species in the 1T-MoS 2 /PMS process. In addition, the IMI degradation pathways analyzed by UPLC-Q-TOF-MS/MS included dehydrogenation, electrophilic addition, heterocyclic ring breakage and intramolecular rearrangement. This study promotes the application of 1T-MoS 2 and is expected to provide a novel persulfate-based advanced oxidation process catalyzed by 1T-MoS 2 for IMI elimination in the aqueous environment.
研究领域:
环境科学
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化学工程
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2023
·Vol. 98
·期 4
·1014-1024
·
IF 3.4
Diantong Li,Jiayu Li,Balijiang Yeerhazi,Yongtao Cheng
BACKGROUND With the rapid development of modern industry and agriculture, large amounts of sewage of various types are being discharged into water bodies every year, causing huge environmental pressure and posing a threat to organisms. Amongst different solutions to this problem, microalgae can remove pollutants including pesticides and antibiotics from water . In this work, an algal strain designated as Scenedesmus sp. TXH. was isolated from the Tangxun Lake Sewage Treatment Plant (Wuhan, China) and used to remove imidacloprid (IMI) from sewage. The removal efficiency, degradation products, removal of conventional contaminants [total dissolved nitrogen (TDN) ammonia nitrogen (NH 4 + -N), total dissolved phosphorus (TDP)], the biochemical response of the microalgae, and the effects of environmental factors such as light intensity and temperature were investigated. RESULTS The results showed that: (i) the highest IMI removal efficiency of ≈60% was achieved under 80 μmol m −2 s −1 at 25 °C; (ii) the removal of NH 4 + -N, TDP and TDN in the sewage reached 90%, 90% and 65%, respectively; (iii) there was a significant linear relationship between the concentration of total chlorophyll and the removal of IMI in the sewage; and (iv) finally, based on the analysis of degradation products by mass spectrometer, three potential IMI degradation pathways were proposed. CONCLUSION In summary, our results showed that Scenedesmus sp. TXH can remove IMI and conventional nutrients efficiently from sewage, implying a potential application in sewage treatment in the near future. © 2023 Society of Chemical Industry (SCI).
研究领域:
环境科学
·
微生物学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 14
·51895
·
IF 3.125
Weihua Su,Yan Qin,Guihua Meng,Jianning Wu,Shengchao Yang,Lin Cui,Wenjuan Li,Zhiyong Liu,Xuhong Guo
Intelligent response carriers have been developed and widely used in agriculture to improve pesticide utilization. However, there are few tailored response carriers that are targeting the cotton aphid pest. Based on the temperature-dependent growth and reproduction of cotton aphids, we constructed a tailored temperature-responsive star-shaped polymer to achieve on-demand controlled release of imidacloprid (IMI) to more effectively kill cotton aphids. In this work, a series of star-shaped polymers based on β -cyclodextrin ( β -CD), 2-(2-methoxyethoxy)ethyl methacrylate (MEO 2 MA), and tert -butyl acrylate ( t BA) were synthesized via atom transfer radical polymerization (ATRP). Next, β -CD-PMEO 2 MA ( β -CD-P0) micelles were developed having different controlled release rates of IMI at different temperatures (14, 21, or 27°C) following the cotton aphid growth and reproduction cycle. At 21°C, the micelle underwent a phase transition from a solution state to a turbidity state. By inducing this structural change, release of IMI was increased to adapt to the reproduction of the cotton aphid population which is highest at 21–27°C. In vitro release experiments showed that 48% of IMI was released from β -CD-P0 after the phase transition temperature (PTT). An aqueous solution of the β -CD-P0 polymer micelle was stable at 4°C for at least 28 days. Therefore, this intelligent response release model has enormous potential as a novel carrier for various pesticides.
研究领域:
农业科学
·
材料科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Meng Mei,Bo Bai,Dan Zheng,Qizhao Wang,Qian Zhang
Intelligent controlled release systems (ICRS) are recognized as a feasible and economical way for the highly efficient utilization of agrochemicals . In this work, we developed an intelligent photothermal-responsively controlled-release pesticide particle (IYGCP) based on imidacloprid (IMI, a model pesticide), yeast biochar (YB, adsorbent and photothermal material), gelatin (GE, temperature-responsive polymer), and Ca-alginate (CA, microsphere matrix). Therein, YB with high adsorption property and photothermal conversion capacity was used as a carrier of IMI to avoid the loss of active ingredients, and as an agent to endow the IYGCP platform with unique photothermal-responsive performance. After IMI loading, IMI/YB was scattered and anchored in CA/GE semi-interpenetrating hydrogels by the chelation of sodium alginate and Ca 2+ . Upon irradiation under simulated sunlight, YB with satisfactory photothermal conversion efficiency can effectively transfer solar energy into thermal energy, induing a free helix-coil structural transition of the un-crossed GE polymers, thereby resulting in changes in microstructure of hydrogel spheres and further enabling a controlled release of IMI encapsulated in the IYGCP. Besides, the composite displayed high control efficacy on corn borers. Consequently, this photothermal-responsive gelatin-based microsphere shows a bright prospect for controlling the release and loss of pesticides.
研究领域:
农业化学
·
材料科学
·
害虫管理
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DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Mengmeng Li,Canping Pan,Zhijia Zhang,Jialing Wang,Shuai Wang,Wenzhuo Li,Tianbing Zhou,Xiaoyi Wang,Ziyi Liu,Zhan Hu,Ranfeng Sun,Dong Li
Imidacloprid (IMI) stress positively correlates with the potential of coumarins to alleviate abiotic stress. However, little is known about the pathways and mechanisms by which coumarin reduces the IMI residue by regulating plant secondary metabolism and plant–microbe interactions. This study examined the impact of coumarin on the uptake, translocation, and metabolism of IMI in pepper plants by modulating the signal molecule levels and microbial communities in the rhizosphere and phyllosphere. Analysis of 2 h─28 d pesticide residue dynamics revealed that coumarin dramatically reduced IMI concentration in pepper fruits. Coumarin upregulated the phenylpropane pathway genes, which increased the levels of flavonoids, phenolic acids, phytohormones, and capsaicinoids. Importantly, phyllosphere and rhizosphere microbial diversity results showed that coumarin improved the abundance of beneficial microorganisms and positively correlated with secondary metabolite secretion. Therefore, coumarin exploited the interaction between the phenylpropane and coumarin synthesis pathways and beneficial microbes to enhance the nutritional quality and IMI degradation.
研究领域:
植物学
·
环境科学
·
农业科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MASS SPECTROMETRY
·
2026
·Vol. 61
·期 8
·e70082
·
IF 2.1
Jiarui Zhang,Sijia Tong,Hongjie Ju,Hui Miao,Yujuan Gong,Meiyun Shi,Lei Yin
Neonicotinoid insecticides, such as imidacloprid, pose significant risks to aquatic ecosystems due to their widespread use and potential for accumulation. In this study, a sensitive and robust analytical strategy based on ultra-high performance liquid chromatography–tandem mass spectrometry (UHPLC–MS 3 ) was developed and validated for the determination of imidacloprid in multiple complex zebrafish biological matrices, including the muscle, liver, intestine, heart, brain, and gills. By harnessing the unique selectivity of the MS 3 acquisition mode, the method effectively eliminated endogenous matrix interferences and achieved a 243-fold enhancement in signal intensity compared to the conventional multiple reaction monitoring (MRM) mode. The sample pretreatment utilized a streamlined protein precipitation approach with methanol, ensuring high extraction efficiency and reproducibility across all tissues. The method was fully validated according to FDA guidelines, demonstrating excellent linearity, accuracy, and precision. Furthermore, the practical application of this assay in a tissue distribution study revealed a non-uniform accumulation pattern of imidacloprid, with the highest concentrations observed in the muscle and intestine, and the lowest in the heart. These findings provide a powerful tool and essential empirical data for further biodistribution investigations and environmental risk assessments of trace-level contaminants in micro-gram level biological samples.
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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）