SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Li-Li Yao,Jun-Li Wang,Rong-Fa Xu,Ming Zhu,Yan Ma,Bin Tang,Qi-Yuan Lu,Feng-Shan Cai,Xiao Yan,Jing Zheng,Yun-Jiang Yu
Liquid crystal monomers (LCMs) are potentially persistent, bioaccumulating, and toxic substances. However, limited data are available on the occurrence of LCMs in indoor and outdoor air particle matter (PM 10 ) in residential areas. Herein, residential areas near an e-waste dismantling center (Guiyu Town, Shantou City), as well as areas away from the e-waste site (Jiedong District, Jieyang City) were selected as the sampling areas. PM 10 was collected from the indoor environments of Guiyu (IGY) and Jieyang (IJY), as well as those from the outdoor environments (OGY and OJY) using the high-volume air samplers (TH-10000C). The levels of 57 LCMs in PM 10 were analyzed, and the highest concentrations of LCMs were found in IGY (0.970–1080 pg/m 3 ), followed by IJY (2.853–455 pg/m 3 ), OGY (0.544–116 pg/m 3 ) and OJY (0.258–35.8 pg/m 3 ). No significant difference was observed for LCM levels in indoor PM 10 between the two areas ( p > 0.05), which were significantly higher than those in outdoors ( p < 0.05), indicating that the release of electronic products in general indoor environments is a source of LCMs that cannot be ignored. The compositions of LCMs in outdoors were not consistent with those of indoors. The correlation analysis of individual LCMs suggested potential different sources to the LCMs in indoor and outdoor environments. The median daily intake values of Σ 46 LCMs via inhalation were estimated as 0.440, 1.46 × 10 −2 , 0.170 and 1.19 × 10 −2 ng/kg BW/day for adults, and as 2.27, 2.60 × 10 −2 , 0.880 and 2.10 × 10 −2 ng/kg BW/day for toddlers, respectively, indicating much higher exposure doses of LCMs indoors compared with the outdoors, and much higher doses for toddlers compared with adults ( p < 0.05). These results reveal the potentially adverse effects of LCMs on vulnerable populations, such as toddlers, in indoor environments.
研究领域:
环境科学
·
公共卫生
✓ 已验证
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2016
·
IF 3.485
Changyu He,Qinglai Yang,Lianjiang Tan,Bingya Liu,Zhenggang Zhu,Bing Gong,Yu-Mei Shen,Zhifeng Shao
The need for smart materials in the area of biotechnology has accelerated the development of stimuli-responsive copolymer micelles. Here, we reported a novel dual-stimuli-responsive block copolymer PEG-DMTK-SS-PLA with both dimethyl thioketal (DMTK) and disulfide linkage incorporated into the backbone, capable of triggering fast drug release properties upon both oxidative (H 2 O 2 ) and reductive (GSH) environment. The CMC values of these copolymer micelles ranging from 0.051 to 0.087 mg mL −1 , the average diameters are from 34 nm to 55 nm and 65 nm to 198 nm for blank and DOX-loaded micelles respectively. MTT assay conducted in NIH 3T3 cells showed the low cytotoxicity of these micelles even when the concentration reached up to 500 μg/mL. Considering tumor microenvironment’s diverse in kinds of tumor cells, fluorescence microscopy, flow cytometry and MTT activity analysis were conducted in several cancer cells (e.g., cervix, lung, gastric, and colon cancer cells), and further confirmed that the dual responsive PEG-DMTK-SS-PLA micelles were degraded much faster than that of non-responsive PEG-PLA and single responsive PEG-SS-PLA and PEG-DMTK-PLA micelles. These results indicate that the dual-responsive micelles are promising for efficient anticancer drug delivery.
研究领域:
生物技术
·
药剂学
·
肿瘤学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xinyu Zhu,Minghao Fang,Shaorou Ke,Bozhi Yang,Shujie Yang,Yanghong Li,Meiling Zhan,Xin Min
In the context of overall water splitting, traditional catalysts like Pt/C and IrO2 are inadequate due to high costs and limited functionality. In response to this challenge, our research introduces a versatile catalytic material, synthesized via an innovative “wet–dry” microwave radiation technique, designed for effective overall water splitting under both acidic and alkaline conditions. In just 110 seconds, we synthesize aluminum-modified ultrathin Rux/RuO2 heterostructures (A-RRO@G), with a diameter of approximately 2.3 nm and a height of less than 1 nm, which significantly reduces cost and preparation time. Thanks to the high atomic utilization and the electronic structure modulation facilitated by the ultrathin Rux/RuO2 heterostructure with the Al dopants, electronic configurations and kinetic reaction pathways are significantly optimized. This results in superior water-splitting performance in both acidic and alkaline environments. Notably, the hydrogen evolution reaction (HER) mass activities surpass those of 20 wt% Pt/C by 16.60 and 5.19 times under alkaline and acidic conditions, respectively, and the oxygen evolution reaction (OER) mass activities exceed that of commercial IrO2 by two orders of magnitude. This research provides insights for developing advanced catalysts tailored for efficient water splitting, marking a significant scientific and practical enhancement in clean energy conversion and storage.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
RESOURCES CONSERVATION AND RECYCLING
·
2019
·
IF 7.044
Xiaoliang Li,Xiaojin Yang,Qi Wei,Bing Zhang
Policy implementation is essential to the effectiveness of environmental governance . Focusing on two types of policies in China, law derived environmental policies and plan derived environmental policies ; this research analyzed the impact of the central government's rules, regulations, and mechanism for rewards/penalties on local governments’ policy implementation. The results indicate that local governments selectively implement environmental policies. This selective implementation effort is primarily determined by the authoritarian environmentalism and the target responsibility system imposed by the central government. Local governments focus their attention on the attitude of the central government toward that policy because the scope of its reward/penalty system provides a signaling effect for different policies. The central government's regulatory oversight of policy implementation has also increased the binding power of the incentive mechanism. China's environmental law or policy implementation should make the government work paramountly.
研究领域:
环境科学
·
公共政策
·
政治生态学
·
环境管理
·
可持续发展
·
行政学
·
环境法学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Yunxiang Chen,Xianzhe Zeng,Yijie Zhou,Rong Li,Heliang Yao,Xun Cao,Ping Jin
Cesium-doped tungsten bronze Cs x WO 3 (CWO) is a promising candidate for near-infrared (NIR) shielding materials on windows of buildings and automobiles. However, the NIR shielding ability of CWO easily deteriorates in hot humid and alkaline environments, which hinders further applications of CWO. In this paper, we firstly reported a novel core-shell structure of CWO@ZnO, which exhibited high NIR shielding performance with excellent stability. In hot humid environment, CWO@ZnO nanoparticles kept their outstanding NIR shielding ability after 150 days while uncoated CWO nanoparticles showed an evident deterioration in just 1 day. Moreover, the CWO@ZnO core-shell structure also exhibits excellent stability in alkaline environment. The good protection of the uniform, continuous and compact ZnO shells played an important role on enhancing the stabilities of CWO nanoparticles. This study provides a novel route for promoting the practical applications of CWO NIR shielding materials.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Zhiyuan Meng,Xinyan Li,Yueyin Liang,Yuexin Gu,Xu Xu,Zhonglong Wang,Yiqin Yang,Shifa Wang
As a virulent heavy metal ion, Hg 2+ will lead to a serious threat to ecosystem and human health. In this work, we reported a chitosan-naphthalimide fluorescent probe CS-NA-ITC for specific recognition and efficient adsorption of Hg 2+ . CS-NA-ITC showed no fluorescence in solution state, while the fluorescence intensity increased obviously at the presence of Hg 2+ , accompanied by the fluorescence color becomes from colorless to bright yellow. It displayed favorable properties like low detection limit (73 nM), extensive pH detection range (5–10) and excellent anti-interference ability. The binding pattern of CS-NA-ITC to Hg 2+ was verified by Job's plot, XPS analysis and FT-IR test. In addition, CS-NA-ITC was utilized to recognition of Hg 2+ in actual water and soil samples and seafood products. Furthermore, the CS-NA-ITC hydrogel could be employed as an efficient Hg 2+ adsorbent with good reusability, which adsorption ability was enhanced compared to chitosan hydrogel.
研究领域:
环境科学
·
分析化学
·
生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Processes
·
2025
·Vol. 13
·期 4
·1260
·
IF 2.8
Hao Zhai,Xianyi Jiang,Chengbin Zhang
This study introduces the innovative application of a vapor chamber to mitigate fuel freezing and temperature disparity in power generation cabins operating under extreme cold conditions. A vapor chamber was designed and implemented within a low-temperature power generation platform in Daqing, China, where outdoor temperatures were below −20 °C. The research focused on evaluating the thermal performance of the cabin under natural and forced convection conditions, with and without the vapor chamber. The experimental investigations assessed the effects of the vapor chamber on the thermal dynamics of the power generation cabin, particularly the temperature of the bottom fuel oil and the air temperature distribution. The results indicated that without the vapor chamber significant temperature disparities and potential risks to electrical equipment were present. The vapor chamber effectively utilizes the heat generated by the diesel engine, thus accelerating the heating rate of the fuel at the bottom. It reduces the duration of the decrease in the oil temperature of the upper and lower layers during the initial start-up from 0.44 h and 0.5 h to 0.31 h and 0.35 h, respectively, effectively preventing the risk of fuel freezing in the initial start-up stage. In addition, the installation of the vaporization chamber significantly improves the temperature uniformity of the air inside the cabin. The maximum temperature difference between the upper and lower air in the cabin decreases by 33 °C, effectively improving the overall thermal environment.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yafeng Liu,Shan Ni,Yue Zhao,Wang Yao,Wenjie Wang,Meng Rong,Huizhou Liu,Liangrong Yang
Extracting uranium from wastewater is highly essential for addressing environmental pollution and sustainable development of nuclear power. However, the design and synthesis of functional adsorbents for selective and rapid uranium adsorption remains extremely challenging. Herein, we report the synthesis of a functionalized hyper-cross-linked polymers (PHCP-Q) via an interfacial and coordination microenvironment synergistic modulation strategy for efficient uranium adsorption. The generated interfacial hydrophilic microenvironment allows the rapid migration of uranyl from the solution to the adsorbent and thus enables fast adsorption kinetics. Meanwhile, the fine-tuned coordination microenvironment within pore space creates the hexa-coordinated nano-pocket structure and thereby enhances the selective recognition of uranyl. Remarkably, PHCP-Q achieves adsorption equilibrium within simply 60 min and shows high saturation U(VI) adsorption uptake of 608.95 mg/g. More importantly, PHCP-Q with the cooperation of binding sites exhibits the highest distribution coefficient by an order of magnitude compared with that of other PHCPs. Besides, PHCP-Q possesses good physicochemical stability and recyclability. This study provides a new insight into the future design of highly effective uranium adsorbents by synergistically modulating interfacial and coordination microenvironment, which can be extended to the extraction of other target ions.
研究领域:
环境科学
·
材料科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Jiawen Ji,Changsheng Li,Bingjie Zhang,Wenjuan Wu,Jianli Wang,Jianhui Zhu,Desheng Liu,Rumin Gao,Yongqiang Ma,Sen Pang,Xuefeng Li
N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) and N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6PPDQ) can pose a threat to human health through the food chain because of their ubiquitous presence in the environment and the biotoxicity on organisms. In this work, we developed modified QuEChERS methods coupled with high performance liquid chromatography tandem mass spectrometry (HPLC/MS-MS) to explore whether 6PPD and 6PPDQ are present in fish and honey. The proposed methods showed acceptable limits of quantification (0.00043-0.001 mg/kg), linearity (R 2 > 0.99), recovery (73.3%-108.3%), matrix effect (70.4%-95.6%) and repeatability (RSD < 8.4%). Accordingly, 6PPD and 6PPDQ have been discovered in snakehead , weever and Spanish mackerel fish, while none of which have been detected in the honey samples. The results of our work contributed to increasing public attention to 6PPD and 6PPDQ in agricultural products and provided important reference for the analysis of them.
研究领域:
食品科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wenxia Hou,Yi Li,Shuting Xu,Qian Wang,Kuntong Song,Junhong Liu,Nan Wang,Qing Zhou,Dongxia Yan,Xingmei Lu
The usage of zinc-containing catalysts in glycolysis causes the residue of Zn 2+ in the polyethylene terephthalate (PET) degradation monomer bis-hydroxyethyl (BHET), which limits the high-value utilization of BHET. This work first used electrodeposition combined with one-time recrystallization to purify BHET. Electrodeposition was suitable for dealing the Zn 2+ concentrations of degradation solutions within 50–100 ppm, and decreased the content of Zn 2+ in BHET from 141.30 to 2.41 ppm, which reached the standard of repolymerization into PET bottles. The removal rate of Zn 2+ was 90 % for the degradation solutions, which decreased the concentration of Zn 2+ in wastewater from 100 to 8.97 ppm. Meanwhile, the Zn 2+ removed from the degradation solutions was deposited on cathode, which obtained metal Zn materials and realized the recycling of Zn resources from Zn(OAc) 2 . Therefore, electrodeposition could realize the purification of BHET, recycling of Zn(OAc) 2 , reducing the environmental pollution caused by the emission of Zn 2+ and the protection of human health, simultaneously. Electrodeposition had less water consumption, lower loss rate of BHET (from 60 % to 10 %) and shorter processing time, compared with six-times recrystallizations. This study first proposed the formation of quadridentate between BHET and Zn 2+ , and put forward a new three-steps electrodeposition mechanism of Zn 2+ : the addition of electric field destroyed the dissociation equilibrium of quadridentate and made it shift to release free Zn 2+ ; the free Zn 2+ gathered to form ionic groups and they migrated to copper; Zn 2+ reduced on copper, of which the first step was the speed limited step.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2015
·
IF 3.844
Yanwei Li,Vincent Homburg,Martin de Jong,Joop Koppenjan
Unsustainable production and consumption patterns in China's metropolitan areas have resulted in an increase in the production of waste materials for which local governments have to find solutions, one of which is the construction of waste incineration power plants. These plans often meet resistance from residents who fear negative environmental impacts . This paper presents an in-depth study of how Chinese local governments responded to an environmental conflict regarding the construction of an incineration power plant in Panyu district, Guangzhou City, PRC, using a typology to identify and categorize these government responses. The empirical analysis shows that local governments engage in various new ways of dealing with these conflicts. The article aims to enhance insight into the response of Chinese local governments to these conflicts and provide building block for further research.
研究领域:
环境科学
·
公共管理
·
城市研究
·
环境政策
·
社会学
·
可持续发展
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Jun Zhang,Ziqi Zhu,Mengyuan Niu,Menghan Yu,Xiongbo Dong,Huaming Yang
Soil minerals influence the biogeochemical cycles of fluoride (F) and phosphorus (P), impacting soil quality and bioavailability to plants. However, the cooperative mechanisms of soil minerals in governing F and P in the soil environment remain a grand challenge. Here, we reveal the essential role of a typical soil mineral, montmorillonite (Mt), in the cycling and fate of F and P. The results show that the enrichment of metal sites on the Mt surface promotes the mineralization of F to the fluorapatite (FAP) phase, thereby remaining stable in the environment, simultaneously promoting P release. This differential behavior leads to a reduction in the level of F pollution and an enhancement of P availability. Moreover, solid-state NMR and HRTEM observations confirm the existence of metastable F–Ca–F intermediates, emphasizing the pivotal role of Mt surface sites in regulating crystallization pathways and crystal growth of FAP. Furthermore, the in situ atomic force microscopy and theoretical calculations reveal molecular fractionation mechanisms and adsorption processes. It is observed that a competitive relationship exists between F and P at the Mt interface, highlighting the thermodynamically advantageous pathway of forming metastable intermediates, thereby governing the activity of F and P in the soil environment at a molecular level. This work paves the way to reveal the important role of clay minerals as a mineralization matrix for soil quality management and offers new strategies for modulating F and P dynamics in soil ecosystems.
研究领域:
土壤科学
·
环境科学
·
地球化学
✓ 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）