CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xiru Chen,Xinyue Gu,Chao Wang,Liuqing Huang,Dingding Wu,Hao Wu,Sijia Liang,Jingyi Ling,Cheng Gu
As a common plasticizer, phthalic acid esters (PAEs) have been widely employed to improve the flexibility and workability of polymetric materials, thus leading to their widespread distribution in soils and wastewater. Moreover, PAEs raised great public concerns due to their endocrine-disrupting effects, which could damage reproductive system and body development at low exposure dose. In the present study, a ferrihydrite-H 2 O 2 -bisulfite ternary system was developed to achieve efficient degradation of dimethyl phthalate (DMP). Our results showed that 86.6 % of total DMP could be removed within 240 min by the ferrihydrite-H 2 O 2 -bisulfite ternary system, in which the respective optimum concentration of ferrihydrite, H 2 O 2 and bisulfite was set as 1.0 g/L, 5.0 mM and 2.0 mM. For comparison, negligible DMP removal was observed in the binary systems of ferrihydrite-H 2 O 2 , ferrihydrite-bisulfite and H 2 O 2 -bisulfite. Hydroxyl radical (•OH) was identified as the dominant reactive species for DMP degradation based on the results of electron paramagnetic resonance (EPR) analysis and free radicals quenching experiments. By complexing with iron species, bisulfite could accelerate the reduction of Fe(III) to Fe(II), thus increasing the generation of •OH by ∼4 times in the heterogeneous ferrihydrite-H 2 O 2 system. Furthermore, ferrihydrite exhibited excellent recyclability without any modification as indicated by the negligible decrease in the catalytic degradation efficiency of DMP. Thus, in addition to efficient degradation of PAEs in wastewater, our study would shed light on the in-situ soil remediation technology on the basis of bisulfite-assisted heterogeneous Fenton-like reactions.
研究领域:
环境科学
·
化学
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产品关联
DOI
高影响因子
TOXICOLOGY AND APPLIED PHARMACOLOGY
·
2024
·
IF 3.3
Li-Lan Liu,Jun-Zhe Yue,Zhen-Yu Lu,Ru-Ya Deng,Can-Can Li,Ye-Na Yu,Wen-Jin Zhou,Min Lin,Hai-Tao Gao,Jiaming Liu,Ling-Zi Xia
Phthalates (PEs), such as di(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP) and butyl benzyl phthalate (BBP) could cause reproductive and developmental toxicities , while human beings are increasingly exposed to them at low-doses. Phytochemical quercetin (Que) is a flavonoid that has estrogenic effect, anti-inflammatory and anti-oxidant effects. This study was conducted to assess the alleviative effect of Que. on male reproductive toxicity induced by the mixture of three commonly used PEs (MPEs) at low-dose in rats, and explore the underlying mechanism. Male rats were treated with MPEs (16 mg/kg/day) and/or Que. (50 mg/kg/d) for 91 days. The results showed that MPEs exposure caused male reproductive injuries, such as decreased serum sex hormones levels, abnormal testicular pathological structure, increased abnormal sperm rate and changed expressions of PIWIL1 and PIWIL2. Furthermore, MPEs also changed the expression of steroidogenic proteins in steroid hormone metabolism, including StAR, CYP11A1 , CYP17A1 , 17β-HSD, CYP19A1 . However, the alterations of these parameters were reversed by Que. MPEs caused male reproductive injuries in rats; Que. inhibited MPEs' male reproductive toxicity, which might relate to the improvement of testosterone biosynthesis.
研究领域:
毒理学
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生殖生物学
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药理学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENT INTERNATIONAL
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2025
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IF 9.7
Yingying Sun,Jie Chen,Wei Wang,Lizhong Zhu
Phthalate esters (PAEs) were ubiquitous in agricultural soils and could be metabolized after being absorbed by crops, posing significant implications for crop yield and quality. We hypothesize that monophthalates (mPAEs), the hydrolyzed products of PAEs, might mimic phytohormone jasmonic acid (JA) to activate the JA signaling pathway, therefore enhancing the defense towards pests and inhibiting the rice plant growth. Taking dibutyl phthalate (DBP) as a representative PAE, our study discovered that DBP exposure significantly induced JA-related outcomes including decreased larval weight (9.58–18.8%), and rice biomass (11.7–34.2%). Under the conditions where the JA content remained unchanged, monobutyl phthalate (MBP), the hydrolyzed product of DBP, triggered the JA signaling pathway, evidenced by significantly upregulated genes encoding coronatine insensitive 1 (COI1) (1.56–1.73 fold), jasmonate ZIM-domain (JAZ) (4.33–7.71 fold), MYC2 transcription factor (2.07–2.87 fold), and promoted phytoalexins production in downstream signaling. MBP conjugated with isoleucine, and the conjugate subsequently mimicked a JA bioactivator (JA-isoleucine conjugate) to occupy the binding site of COI1-JAZ co-receptor protein, thereby initiating the JA signaling pathway. These JA-related outcomes and mechanism were consistently evidenced in rice exposed to other four typical PAEs, and the aliphatic chain length of selected PAEs indicated a negative contribution to these observations. In this study, we discovered a unconventional mechanism through which the transformation metabolites of PAEs elicit pest defense while simultaneously inhibiting rice growth, providing insights into the risk assessment of PAEs on crop yields and quality.
研究领域:
环境科学
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植物生理学
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农业科学
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产品关联
DOI
PubMed
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2023
·Vol. 40
·期 9
·2149-2158
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IF 2.7
Li Chengfeng,Lyu Qishen,Li Zheng,Yang Shuliang,Sun Yong,Tang Xing,Zeng Xianhai,Lin Lu
The hydrogenation of biomass-based furan compounds is an important step for the catalytic valorization of biobased chemicals. In this work, Ru-based catalysts supported on different supports, such as HY, MgO and Amberlyst-15, were prepared and estimated for the hydrogenation of dimethyl 2,5-furandicarboxylate (FDMC). Among them, Ru/HY provided a desirable yield of 99.4% for tetrahydrofuran-2,5-dicarboxylic acid dimethyl ester (THFDMC) under 90 °C and 3 MPa H 2 . Based on catalyst characterization, Ru/HY could offer more surface Ru 0 species and carbon radical intermediates than other catalysts, which could largely favor the activation of hydrogen and then promote the hydrogenation of FDMC over Ru/HY.
研究领域:
催化化学
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可再生资源化工
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产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2016
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IF 4.839
Qingqi Lin,Siyuan Chen,Yuanqing Chao,Xiongfei Huang,Shizhong Wang,Rongliang Qiu
Uptake and accumulation by plants is a significant pathway in the migration and transformation of phthalate esters (PAEs) in the environment. However, limited information is available on the mechanisms of PAE metabolism in plants. Here, we investigated the metabolism of di- n -butyl phthalate (DnBP), one of the most frequently detected PAEs, in pumpkin ( Cucurbita moschata ) seedlings via a series of hydroponic experiments with an initial concentration of 10 mg L −1 . DnBP hydrolysis occurred primarily in the root, and two of its metabolites, mono- n -butyl phthalate (MnBP) and phthalic acid (PA), were detected in all plant tissues. The MnBP concentration was an order of magnitude higher than that of PA in shoots, which indicated MnBP was more readily transported to the shoot than was PA because of the former's dual hydrophilic and lipophilic characteristics. More than 80% of MnBP and PA were located in the cell water-soluble component except that 96% of MnBP was distributed into the two solid cellular fractions (i.e., cell wall and organelles) at 96 h. A 13–20% and 29–54% increase of carboxylesterase (CXE) activity shown in time-dependent and concentration-dependent experiments, respectively, indicated the involvement of CXEs in plant metabolism of DnBP. The level of CXE activity in root subcellular fractions was in the order: the cell water-soluble component (88–94%) >> cell wall (3–7%) > cell organelles (3–4%), suggesting that the cell water-soluble component is the dominant locus of CXE activity and also the domain of CXE-catalyzed hydrolysis of DnBP. The addition of triphenyl phosphate, a CXE inhibitor, led to 43–56% inhibition of CXE activity and 16–25% increase of DnBP content, which demonstrated the involvement of CXEs in plant metabolism of DnBP. This study contributes to our understanding of enzymitic mechanisms of PAE transformation in plants.
研究领域:
环境科学
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植物学
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生化与分子生物学
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产品关联
DOI
PubMed
高影响因子
POLYMER INTERNATIONAL
·
2024
·
IF 2.9
Yong Yang,Jing Shen,Erxun Hu,Yajin Fang,Zhibo Xu,Juan Li
Poly(lactic acid) (PLA) is known as one of the most promising biodegradable polyesters, while inherent brittleness and insufficient gas barrier performance limit its potential application as a film material. Herein, poly[(butylene diglycolate)- co -furandicarboxylate] (PBDF) with excellent flexibility and good gas barrier properties was synthesized and then melt-blended with PLA. Compared with neat PLA, the elongation at break of the PLA/PBDF20 blend increased more than 40 times and reached over 176.7%. In addition, its O 2 , CO 2 and H 2 O permeability coefficients decreased by 21.3%, 50.8% and 46.3%, respectively. Moreover, the PLA/PBDF20 blend also exhibited better biodegradability, with a weight loss rate increasing from 2.7% of neat PLA to 19.0% after 5 weeks of composting. Notably, incorporation of a multifunctional epoxy compatibilizer (Joncryl ADR®-4368) into the PLA/PBDF blends further enhanced their toughness and gas barrier performance, which could be attributed to the improvement of the miscibility between PLA and PBDF. © 2024 Society of Chemical Industry.
研究领域:
材料科学
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环境科学
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高分子化学
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Junhua Ding,Li Zhang,Yingke Zhu,Jinggang Wang,Zhenghong Guo,Zhengping Fang,Juan Li
A flame retardant containing two phosphonate structures (DOPO–DP) was synthesized by applying diphenylphosphinic chloride and 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphazephenanthrene-10-oxide. The DOPO–DP was used to modify the flame retardancy of poly(ethylene 2,5-furandicarboxylate-co-ethylene terephthalate) containing (PEFT). DOPO–DP has a high flame-retardant efficiency in PEFT. The UL-94 V0 level is obtained by adding 7 wt % DOPO–DP into PEFT. The fire-retardant mode of action is melting away, which is induced by the plasticizing effect of DOPO–DP mainly. In addition, two chain extenders triglycidyl isocyanurate (TGIC) and 2,2′-(1,3-phenylene)-dioxazoline were applied to enhance the mechanical properties of PEFT. DOPO–DP deteriorates the mechanical properties of PEFT while coupling agents improve the bending and impact strength. While the chain expansion effect of TGIC competes with the plasticizing effect of DOPO–DP, excessive TGIC deteriorates the UL-94 rating of PEFT.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Xi Chen,Yunfeng Chen,Songrong Li,Cheng Xue,Dongfang Liu,Wenli Huang
Phthalic acid esters (PAEs) pose serious health risks to humans and are difficult to remove by conventional sewage treatment processes. Herein, Fe 2 Mo 3 O 8 /MoO 2 /Mo 2 N composite (FMON) derived from bimetallic organic framework was used to activate peroxymonosulfate (PMS) for dibutyl phthalate (DBP) degradation. FMON exhibited an excellent catalytic effect with DBP removal efficiency of 92.4 % within 60 min. Mo 2 N showed a superior ability in promoting Fe 3+ /Fe 2+ redox cycle. The reduction efficiencies of Fe 3+ by Mo 2 N/MoO 2 composite and MoO 2 were 67 %–94 % and 11 %–23 %, respectively, in the homogeneous comparative experiment. Moreover, the ratio of Fe 2+ /Fe 3+ in FMON increased significantly after the catalytic reaction. Fe element doping also enhanced the reuse stability and reduced the metal ion leaching of the catalyst. The degradation of DBP was mediated by a variety of reactive species, of which SO 4 − , OH and O 2 − were dominant. Fe element, Mo element and O vacancies were confirmed to exert significant contributions as active sites in the catalytic process. Three degradation pathways of DBP were obtained by DFT calculation and HPLC-MS analysis. And the toxicity of DBP degradation products was significantly reduced based on the assessment result of Toxicity Estimation Software Tool (T.E.S.T.). This study explored a novel Fe/Mo bimetallic catalyst with friendly Fe 3+ /Fe 2+ cycling for environmental catalysis and provided new ideas for the treatment of PAEs wastewater.
研究领域:
环境催化
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废水处理
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
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IF 11.3
Wenjie Li,Pengfei Mao,Xuwen Chen,Wanting Ling,Chao Qin,Yanzheng Gao
Developing efficient passivating sorption materials for the treatment of combined pollution by phthalate esters (PAEs) and Cd 2+ has become a critical focus in environmental protection and soil remediation. In this study, biochar-sulfhydryl modified montmorillonite composites (BC-SHMMT) were synthesized, characterized, and evaluated for the co-sorption of PAEs (DMP, DEP) and Cd 2+ . The integration of sulfhydryl-modified montmorillonite (MMT-SH) with biochar improved the material's surface structure, enhancing both co-sorption capacity and structural stability. Molecular dynamics simulation indicated a monolayer chemical sorption of pollutants by BC-SHMMT, in alignment with the sorption theoretical model. In the co-sorption system, the coexistence of pollutants increased the adsorption of Cd 2+ and decreased the sorption of PAEs. The smaller molecular size and higher diffusion coefficient of Cd 2+ facilitated its pore filling and interaction with oxygen-containing functional groups of the material, leading to competition with PAEs for sorption sites. Notably, the ion exchange and complexation of Cd 2+ adsorption by MMT-SH are pivotal in enhancing BC-SHMMT co-sorption capacity. These findings provide valuable insights into the development of eco-friendly novel materials and the improvement of co-pollution remediation efficiency.
研究领域:
环境科学
·
土壤修复
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Zhihong Huang,Lu Wang,Xinjie Li,Bingjun Lu,Yuli Lin,Bo Fu,Chiqun Shan,Xinxin Tang,Pei Sung Toh,Shaoyou Lu
With the widespread use of plastic products, phthalates (PAEs), as common plasticizers, have become a significant contributor to environmental pollution. PAEs can migrate to tea leaf during cultivation, processing, and packaging, and can be released into the tea infusion during brewing, posing potential risks to human health. A total of 220 tea samples from four major tea-producing regions in China were collected and analyzed for the concentrations of 13 PAEs in tea leaves and tea infusions. PAEs were present in all tea samples at concentrations ranging from 504.4 to 6177.0 ng/g, with dibutyl phthalate (DBP) contributing the most. Dark tea and tea from the eastern coast and southern regions of China were the most contaminated. The brewing experiments indicated that PAEs could migrate into tea infusions, with concentrations ranging from 0 to 77.4 ng/mL, showing the highest transfer rates during the second and third brews. The health risk assessment results revealed that PAEs posed low noncarcinogenic and carcinogenic risks through tea consumption, but risk levels were significantly higher in children than in adults. This indicates the necessity for giving children more attention. We suggest stricter environmental protection measures during tea cultivation, processing, and packaging to safeguard public health.
研究领域:
环境科学
·
食品科学
·
公共卫生
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2022
·
IF 6.796
Wenhui Zhang,Na Zheng,Sujing Wang,Siyu Sun,Qirui An,Xiaoqian Li,Zimeng Li,Yining Ji,Yunyang Li,Jiamin Pan
The production of face towels is growing at an annual rate of about 4% in China, reaching 1.13 million tons by 2021. Phthalates (PAEs) are widely used in textiles, and face towels, as an important household textile, may expose people to PAEs via the skin, further leading to health risks. We collected new face towels and analyzed the distribution characterization of PAEs in them. The changes of PAEs were explored in a face towel use experiment and a simulated laundry experiment. Based on the use of face towels by 24 volunteers, we calculated the estimated daily intake (EDI) and comprehensively assessed the hazard quotient (HQ), hazard index (HI), and dermal cancer risk (DCR) of PAEs exposure in the population. PAEs were present in new face towels at total concentrations of
研究领域:
环境科学
·
公共卫生
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Dan Zhang,Kai Zhou,Chenqi Liu,Xiujuan Li,Siyi Pan,Lan Zhong
The dissipation, uptake, translocation and accumulation of phthalic acid esters (PAEs) including diallyl phthalate (DAP), diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP) and di-(2-ethylhexyl) phthalate (DEHP) in sediment- Zizania latifolia system were investigated by gas chromatography-flame ionization detector after a QuEChERS pretreatment method. The dissipation rates of PAEs in sediment were positively correlated with exposure time, and more than 68.12% of PAEs in sediment were decreased after 28 d even when the spiked contents were extremely high. All the five PAEs could be taken up by roots from contaminated sediment and subsequently be transported into stems and leaves. There were significant linear correlations between the sediment content and the content in each tissue. DEHP was most readily transported from sediment to roots and stems, followed by BBP, DBP, DIBP and DAP, whereas the order of transportation from roots to leaves was reversed. During 28 d of exposure, the average concentration of each PAE in stems was the highest, followed by roots, leaves and edible parts. DEHP and BBP were the major contaminants in edible parts but could not pose a risk to human health. The accumulation of PAEs in edible parts was influenced by the species and concentration of PAEs as well as the survival time and harvest time of edible parts. The differences in uptake and translocation behaviors among PAEs in plant tissues were significantly correlated to their physicochemical properties , such as alkyl chain length and octanol/water partition coefficient (logK ow ). The results reveal that Zizania latifolia is not only a kind of safe food, but also a potential plant to remediate contaminated sediment by accumulating and degrading PAEs from the habitats.
研究领域:
环境科学
·
植物学
✓ 已验证
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）