JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Yatong Xing,Xinying Gong,Ping Wang,Yu Wang,Lei Wang
Organic phosphite antioxidants (OPAs) are widely added in plastic products and can be oxidized to generate oxidized derivatives (OPAs = O), namely organic phosphate esters (OPEs), during production and use processing. Herein, the occurrence of OPEs and OPAs in five plastic food packages was detected by liquid chromatography–tandem mass spectrometry. Three OPEs (TPhP, TCEP, and AO168 = O) and three OPAs (TPhPi, TCEPi, and AO168) were found in the plastic packages, with concentrations of
研究领域:
环境科学
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食品安全
·
分析化学
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DOI
PubMed
高影响因子
SOUTH AFRICAN JOURNAL OF BOTANY
·
2024
·
IF 2.7
Xiaoyu Ren,Haiou Wang,Wenxuan Wang,Wenxiao Zhang,Qian Li
Combined contamination of Organophosphate esters (OPEs) and heavy metal has been concerning on their potential threaten to human health through food chain. In order to estimate effects of OPEs and heavy metal's combined contamination on crop, the growth of rice seedlings, pollutant accumulations and their involved in transcript regulation pathway under OPEs and Cd contamination were investigated. In results, only single OPEs pollution improved the biomass of rice, while single Cd pollution inhibited the growth of plants. Although the combined contaminations of OPEs and Cd also showed negative effect for plant growth, OPEs could alleviate the negative effect of Cd on rice. The Octanol-water partition coefficients (log K ow ) of OPEs were positively correlated with root concentration factor (RCF) values in the trend line and negatively correlated with shoot concentration factor (SCRF) and translocation factor (TF). OPEs and Cd inferred with each other's accumulations in plants through reducing RCF, SCRF and TF. After addition of Cd, the expressions of OsTIL, OsLTP4, OsLTPL1 , and OsMLP423 genes involved in OPEs accumulation were downregulated. Moreover, the presence of Cd also affected the binding sites and binding energy of the four proteins with OPEs. Meanwhile, the expression of OsNramp1, OsNramp5, OsHMA2, OsGS1 , and OsPCS1 genes involved in Cd accumulation and toleration were also downregulated after addition of OPEs. These results suggested that OPEs and Cd directly repressed each other gene transcript involved in accumulation and toleration process.
研究领域:
环境科学
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植物学
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分子生物学
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DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2024
·
IF 6.9
Qing Shao,Yiyi Yi,Yuxiang Xie,Haike Yang,Jingyi Guo,Zizheng Liu,Yiqun Chen,Jun Wan
The utilization of steel slag as an adsorbent for wastewater treatment (e.g., phosphorus removal) is a promising direction for the simultaneous disposal of solid waste and eutrophication control. In this study, 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) was selected as a representative phosphonate and its adsorption performance and mechanism on steel slag were explored. The experiment results show that for the HEDP solution with a concentration of 0–50 mg/L, the removal efficiency of steel slag was 85–88% and the adsorption capacity was 0.0835–8.2793 mg-P/g. The HEDP adsorption behavior on steel slag conformed to the pseudo-second-order adsorption kinetics model. Both the Freundlich and Langmuir adsorption isotherm models can describe the experimental data well. And the theoretical maximum adsorption capacity at 25°C was calculated as 23.74 mg-P/g. Combined with our SEM, XRD, FTIR, and XPS analyses, the adsorption mechanism involved ligand exchange, hydrogen bond interaction, and electrostatic attraction. After 5 reuse cycles, the regeneration efficiency of steel slag remained 77% by using 1 mol/L NaOH. The research work in this paper proves that steel slag, as a solid waste with large emissions in China, can effectively remove HEDP, which supplies a new way for the resource utilization of steel slag.
研究领域:
环境科学
·
废水处理
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DOI
高影响因子
ANALYST
·
2024
·Vol. 149
·期 15
·3951-3960
·
IF 3.6
Qiuying Wang,Ruiqing Jiu,Yunyao Wang,Zongda Li,Jianan Chen,Haochi Liu,Jifeng Liu,Jia Cao
Safety problems caused by organophosphorus pesticide (OP) residues are constantly occurring, so the development of new methods for the degradation and detection of OPs is of great scientific significance. In the present study, β-sheet peptides and β-hairpin peptides for catalyzing the hydrolysis of OPs were designed and synthesized. The peptide sequences with the highest hydrolytic activity (EHSGGVTVDPPLTVEHSAG) were screened by investigating the effect of the location of the active sites of the peptide and the peptide's structure on the degradation of OPs. In addition, the relationship between the peptides’ conformation and hydrolytic activity was further analyzed based on density functional theory calculations. The noncovalent interactions of the peptides with the OPs and the electrostatic potential on the molecular surface and molecular docking properties were also investigated. It was found that peptides with approximate active amino acids consisting of the catalytic triad and with the hairpin structure had enhanced hydrolytic activity toward the hydrolysis of OPs. To develop an electrochemical sensor technique to detect OPs, the conductive MXene (Ti3C2) material was first immobilized with a caffeic acid monolayer via enediol–metal complex chemistry and then bound with the β-hairpin peptide (EHSGGVTVDPPLTVEHSAG) via carboxy–amine condensation chemistry between the –COOH of caffeic acid and the –NH2 of the peptide to prepare a MXene–peptide composite. Then, the prepared composite was modified on the surface of a glassy carbon electrode to construct an electrochemical sensor for the detection of OPs. The developed technique could be used to monitor OPs within 15 min with a two orders of linear working range and with a detection limit of 0.15 μM. Meanwhile, the sensor showed good reliability for the detection of OPs in real vegetables.
研究领域:
生物化学
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 6
·1-12
·
IF 5.3
Shen Hao,Tang Yan,Ma Hongmei
The high-residual and bioaccumulation property of organophosphorus pesticides (OPs) creates enormous risks towards the ecological environment and human health, promoting the research for smart adsorbents and detection methods. Herein, 2D hemin-bridged MOF nanozyme (2D-ZHM) was fabricated and applied to the efficient removal and ultrasensitive dual-mode aptasensing of OPs. On the one hand, the prepared 2D-ZHM contained Zr-OH groups with high affinity for phosphate groups, endowing it with selective recognition and high adsorption capacity for OPs (285.7 mg g −1 for glyphosate). On the other hand, the enhanced peroxidase-mimicking biocatalytic property of 2D-ZHM allowed rapid H 2 O 2 -directed transformation of 3,3′,5,5′-tetramethylbenzidine to oxidic product, producing detectable colorimetric or photothermal signals. Using aptamers of specific recognition capacity, the rapid quantification of two typical OPs, glyphosate and omethoate, was realized with remarkable sensitivity and selectivity. The limit of detections (LODs) of glyphosate were 0.004 nM and 0.02 nM for colorimetric and photothermal methods, respectively, and the LODs of omethoate were 0.005 nM and 0.04 nM for colorimetric and photothermal methods, respectively. The constructed dual-mode aptasensing platform exhibited outstanding performance for monitoring OPs in water and fruit samples. This work provides a novel pathway to develop MOF-based artificial peroxidase and integrated platform for pollutant removal and multi-mode aptasensing. Graphical Abstract
研究领域:
环境科学
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分析化学
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生物医学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Huifang Wu,Qiqi Wang,Miaochen Dong,Xinyue Liu,Yanfeng Tang
Accurate and rapid monitoring of organophosphorus pesticides (OPs) residues is crucial for regulating food safety. Herein, dual-emission carbon dots (de-CDs) were fabricated for the ratiometric detection of OPs and Hg 2+ . The de-CDs exhibited two emission peaks at 678 and 485 nm when excited with visible light. Interestingly, the fluorescence at 678 nm was significantly quenched by Hg 2+ mainly because of the static quenching effect, whereas that at 485 nm exhibited a slight change. More significantly, the quenched fluorescence of the de-CDs recovered remarkably after introducing omethoate , diazinon and malathion . Accordingly, the ratiometric detection of the three OPs and Hg 2+ was achieved with high selectivity and robust performance. In addition, the OPs residues assay in Brassica chinensis was successfully performed with satisfactory results. This study not only provides an attractive tool for the simple and rapid assay of OPs but also offers new insights into the fabrication of multi-functional carbon dots .
研究领域:
食品科学
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环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 24
·13476-13485
·
IF 3.049
Fan Zhang,Chuting Yang,Yi Li,Min Chen,Sheng Hu,Haiming Cheng
P,P-bis (2-oxooxazolidin-3-yl)-N-(3-(triethoxysilyl)propyl)phosphinic amide (APTES-BOP)-modified SBA-15 (SBA-15-BOP) was prepared by a post-synthesis grafting method for the removal of anionic azo dyes from aqueous solutions. The properties of the prepared adsorbent were characterized by PXRD, FT-IR, SEM, TEM, nitrogen sorption, and elemental analysis. Adsorption equilibrium and adsorption kinetic studies demonstrated that the experimental data fitted well with the Langmuir isotherm model and pseudo-second-order model. According to Langmuir fitting, SBA-15-BOP showed high adsorption capacity for CR and RR2 dyes, with the maximum adsorption capacities of 518.1 mg g−1 and 253.8 mg g−1, respectively. The thermodynamic study indicated that the adsorption processes of CR and RR2 dyes on SBA-15-BOP were spontaneous and exothermal. The prepared SBA-15-BOP can be a promising adsorbent for the removal of anionic dyes from aqueous solutions.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2025
·
IF 6.1
Zijuan Zhong,Han Mao,Zhaofeng Chang,Haobo Guo,Luping Tian,Wei Du,Danping Wu,Peng Zhang,Hao Li,Yunjiang Yu
With the widespread application of biochar, biochar–mineral complexes are formed in large quantities in the environment. However, there are few reports on their adsorption and desorption mechanisms for organophosphate esters (OPEs). In this study, biochar–mineral complexes (MBC@FH and MBC@F) were prepared through co–ball–milling with biochar and minerals (α–FeO(OH) and Fe 2 O 3 ). The properties of pristine biochar and MBC@FH/F were compared, and the adsorption–desorption mechanisms of OPEs on all biochar materials were analyzed. The results showed that MBC@FH/F complexes have a larger specific surface area, more oxygen–containing functional groups, stronger aromaticity, and larger pore structures, but less persistent free radicals than pristine biochar. MBC@FH/F complexes exhibited lower secondary kinetic adsorption rate constant ( k 2 ), higher intraparticle diffusion rate constant ( k 1p ) and adsorption capacity than pristine biochar. Hydrophobic interactions controlled the adsorption of TPhP and TPPO on MBC@FH/F complexes, and π–π interactions, pore filling, hydrogen bonding also participated in the adsorption process. MBC@F had higher aromaticity than MBC@FH, thus having stronger adsorption capacity than MBC@FH. The large spatial volume of TPPO inhibited its diffusion on biochar materials, demonstrating a smaller adsorption amounts than TPhP. The desorption was only observed for TPhP, while no desorption occurred for TPPO. The retention amount of TPhP on MBC@FH/F was represented by subtracting the desorption amount from their adsorption amount, which increased by 1.22–6.98 times, reaching 4.48–41.07 mg/g. In addition, the desorption hysteresis decreases with increasing pore diameter of MBC@FH/F. This study illustrated that the formation of biochar-mineral complexes may be more conducive to the adsorption of OPEs.
研究领域:
环境科学
·
化学
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产品关联
DOI
PubMed
高影响因子
Water
·
2024
·Vol. 16
·期 21
·3145
·
IF 3
Wei Wu,Yiming Nie,Zhixin Wang,Tianyin Huang,Xiaoyi Xu,Hanhan Liu,Peirong Li,Bingdang Wu
Organophosphates are a type of emerging environmental contaminant, which can be removed effectively by adsorption. Here, modified steel slag was examined for its adsorptive performance in the removal of hydroxyethylidene diphosphonic acid (HEDP) from water. Compared to acid (55.3%, maximum removal rate) and base (85.5%) modification, high-temperature modification (90.6%) significantly enhanced steel slag’s adsorption capacity for HEDP, surpassing that of unmodified slag (71.2%). Kinetic analyses elucidated a two-phase adsorption process—initial rapid adsorption followed by a slower equilibrium phase. The results of adsorption energy analysis showed that modified steel slag preferentially occupied the sites with higher energy, which promoted the adsorption. After five regeneration cycles, the adsorption properties of the material were not significantly reduced, which indicates that the material has good application potential. Microscopic and spectroscopic techniques, including SEM-EDS, FTIR, and XPS, were employed to uncover the surface chemistry and structural changes responsible for the enhanced adsorption efficiency. The adsorption mechanism of HEDP on steel slag is a complete process guided by hydrogen bonding interactions, strengthened surface complexation, and optimized ligand exchange. This study advances the sustainable utilization of industrial waste materials and contributes significantly to the development of innovative water treatment technologies.
研究领域:
环境科学
·
材料科学
·
化学工程
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产品关联
DOI
高影响因子
MARINE POLLUTION BULLETIN
·
2024
·
IF 5.3
Peng Zhang,Yaqing Cui,Ren Shi,Jing Wang,Linke Ge,Qinglin Mu
This study investigated 17 organophosphate esters (OPEs) in the surface sediments of Hangzhou Bay and the East China Sea. The mean concentration of ∑OPEs in Hangzhou Bay (235.3 ng/g) was slightly lower than that in the East China Sea (273.5 ng/g), with detected analytes dominated by Diethyl phosphate, Tris(2-chloropropyl) phosphate, and Tris(1-chloro-2-propyl) phosphate. Based on principal component analysis and cluster analysis for the source apportionment of OPEs, the results indicated that the high levels of OPEs in the East China Sea close to Yangtze River estuary can be attributed to a significant large-scale OPEs production site located along the southern Yellow Sea and the western coast of the East China Sea. Furthermore, the risk assessment conducted on aquatic organisms indicated the non-ecological risk of OPEs. However, future research should focus on the potential composite impacts of OPEs on the water systems and human health.
研究领域:
环境科学
·
海洋学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Mingjin Cai,Linli Dai,Yawen Huang,Yi Xie,Yongkui Zhang,Yabo Wang
Waste baijiu distillers’ grains (BDGs) are one kind of low-value-added biomass originated from Chinese baijiu industry. Considering the large quantity and abundance in carbon element, conversion of waste BDGs to biochar as functional material is of great potential for the sustainable development of baijiu industry. In this study, with the assistance of potassium acetate as activation agent, waste BDGs were converted to highly porous biochar materials through a pyrolysis procedure. Taking the advantages of large specific surface area, well-developed micro- and mesopores, partially graphitized carbon with thin layer structure and abundant surface functional groups, the waste BDGs-derived biochar performed well for the removal of typical organophosphate esters (OPEs) in water, e.g., a maximum adsorption capacity for triphenyl phosphate (TPhP) reached 752.95 mg g −1 over biochar sample of BC 1:3–900 . Although the adsorption equilibrium needed up to 10 h to reach, over 50 % effective adsorption was completed in the first 30 min. The adsorption behavior of TPhP on biochar was identified as an exothermic and mono-layer adsorption process, including both fast surface adsorption and relatively slow intra-particle diffusion steps. Solution pH did not affect TPhP adsorption much, but environmental temperature showed great influence on TPhP adsorption capacity. The developed biochar of BC 1:3–900 was still effective for TPhP removal from natural water bodies. Further studies indicated that π-π electron-donor-acceptor (EDA) interaction, hydrogen bonding, σ bonding as well as pore filling effect were the main adsorption mechanisms, contributing to the good adsorption performance of biochar. Besides of aromatic OPEs of TPhP and tricresyl phosphate (TCP), the optimized biochar material was also efficient in removing alkyl and halogenated OPEs, i.e., tributyl phosphate (TBP) and tris(2-chloroethyl) phosphate (TCEP). The facile preparation procedure of biochar material and their good adsorption performance bring a possible alternative for the treatment of OPEs-containing water/wastewater.
研究领域:
环境科学
·
材料科学
·
化学工程
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产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2020
·Vol. 21
·期 8
·1649-1656
·
IF 1.797
Hou Delong,Wang Songhang,Chang Jinming,Xu Zhou,Zeng Qi,Wang Zhonghui,Yang Yongcheng,Yan Jun,Chen Yi
Plasticizers that enable flexible polyvinyl chloride (PVC) are usually combustible, restricting the application of PVC in fire-prone scenarios. In this context, intrinsically flame-retardant plasticizers displaying dual function continue to be the focus of intensive research. Despite their efficiency, the majority of these dual-functional plasticizers previously reported contain halogen elements, which, once ignited, emanate toxic and potentially carcinogenic substances, along with toxic gases and smoke, polluting the environment, damaging the biota, and threatening human health. Here, we report a strategy to obtain a halogen-free, intrinsically flame-retardant PVC bio-plasticizer that harnesses the phenolic hydroxyl of naturally occurring cardanol and covalent attachment of an organophosphate moiety. When combined with di-(2-ethylhexyl) phthalate (DOP), the organophosphate-containing cardanol is qualified as a co-plasticizer, while endowing the PVC materials with flame retardancy. Unlike inorganic flame-retardants, the engineered cardanol is compatible with PVC such that the mechanical properties of the PVC materials are not compromised. The rationale underlying the present effort may provide guidance for developing sustainable alternatives to halogen-containing plasticizers to address the sustainability challenge now confronting PVC industry.
研究领域:
材料科学
·
化学工程
·
可持续发展
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）