INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
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IF 3.9
Jian Wei,Yucui Hou,Tianqi Huang,Aohua Zheng,Shuhang Ren,Weize Wu
Identifying the source of products in lignin hydro-liquefaction oil is crucial for assessing the lignin conversion efficiency. The utilization of hydrogen donor solvents (HDSs) complicates the determination of whether polycyclic aromatic hydrocarbons (PAHs) derive from lignin or HDS. Thus, identifying the source of PAHs in the oil can improve our understanding of lignin structures and enhance its utilization. To address this challenge, 1,2,3,4-tetrahydroquinoline (THQ) was used as an HDS to trace products within the oil. The results showed that (1) lignin could be completely liquefied in THQ under optimal conditions: a THQ/lignin mass ratio of 0.5, a reaction temperature of 450 °C, an initial H2 pressure of 8 MPa, a reaction time of 4 h, and a molybdenum sulfide/lignin mass ratio of 1; (2) PAHs with 2–6 rings were identified in the oil and confirmed to derive solely from lignin through qualitative and quantitative analyses via GC–MS rather than THQ.
研究领域:
能源化学
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环境科学
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生物质转化
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Lin Shen,Yongteng Qian,Dong-Hwan Kim,Dae Joon Kang
In this study, cobalt phosphide (CoP 2 ) was synthesized onto a Nickel foam (NF) support via phosphorylation under an N 2 atmosphere. The resulting material was then coated with tetrahydroxyquinone (THQ), a conjugated microporous polymer, using a hydrothermal method. The as-synthesized CoP 2 /THQ@NF showed remarkable electrocatalytic performance for the hydrogen evolution reaction and excellent durability in acidic electrolytes. This was attributed to the synergistic effect of the NF support, CoP 2 , and THQ, which led to a modified electronic structure of CoP 2 and a high electron transfer rate of THQ. A low overpotential of 137 mV was required in a 0.5 M H 2 SO 4 solution to achieve a current density of 10 mA cm −2 .
研究领域:
材料科学
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电化学
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DOI
高影响因子
International Journal of Environmental Research and Public Health
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2022
·Vol. 19
·期 19
·12547
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IF 4.614
Nan Wang,Zhengwu Cui,Yang Wang,Jingjing Zhang
In this study, eleven organochlorine pesticides (OCPs) in fresh vegetables in the Changchun suburb were investigated, and their potential health risks were evaluated. The average concentrations of OCPs in edible parts of vegetables were found in the following descending order: Σhexachlorocyclohexanes (ΣHCHs) (6.60 µg·kg−1) > Σdichlorodiphenyltrichloroethanes (ΣDDTs) (5.82 µg·kg−1) > ΣChlordanes (2.37 µg·kg−1) > heptachlor (0.29 µg·kg−1). Moreover, OCPs in different types of vegetables exceeded the maximum residue limits (MRLs), and the exceeding rates in various vegetables decreased in the following order: leafy vegetables (19.12%) > root vegetables (18.75%) > fruit vegetables (3.85%). The proportions of OCPs exceeding MRL in different vegetables were found in the following descending order: Welsh onion (22.50%) > radish (18.75%) > Chinese cabbage (14.29%) > pepper (6.90%) > cucumber (3.23%) > eggplant (2.94%) > tomato (2.78%). The sources’ identification results showed that DDTs in vegetables came mainly from newly imported technical DDTs and dicofol, while HCHs originated mainly from lindane. For both adults and children, the average target hazard quotients (avg. THQ) were all less than 1, and the average hazard index (avg. HI) values were 0.043 and 0.036, respectively. There were no significant health risks associated with OCP exposure for the inhabitants of the study area.Keywords:suburban vegetables;organochlorine pesticides;maximum residue limit (MRL);sources identification;target hazard quotient (THQ)
研究领域:
环境科学
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食品安全
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毒理学
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DOI
PubMed
高影响因子
MINERALS ENGINEERING
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2026
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IF 6
Yukun Wu,Lingfeng Shen,Rui Xu,Ning Sun,Li Wang
THQ-8 has selectivity for lepidolite over albite and quartz under near-neutral conditions; • THQ-8 addresses key limitations of conventional cationic collectors by excellent foam properties; • THQ-8 achieves coordination adsorption between its conjugated structure and Al-F sites; • THQ-8 represents a molecular design strategy for environmental lithium resource recovery. The efficient flotation separation of lepidolite from quartz and albite remains challenging in conventional cationic systems, primarily due to poor selectivity and excessive foam stability. To address these issues, a novel oligomeric surfactant, THQ-8, was synthesized and investigated as a potential collector for lepidolite flotation. Micro-flotation results confirmed the superior selectivity of THQ-8, with recoveries of 95.94% for lepidolite versus only 6.32% for albite and 9.57% for quartz, enabling efficient separation. This performance surpassed that of the traditional collector dodecylamine (DDA), which required a highly acidic pulp (pH 2.0), and the Gemini collector PDDA, which lacked selectivity. Complementing this selectivity, also produced foam with markedly lower stability and height than both counterparts, indicating favorable froth properties for mineral processing. A multi-faceted adsorption mechanism study, incorporating contact angle measurements, FTIR, XPS, and AFM, confirmed that THQ-8 selectively chemisorbs onto the lepidolite surface. The primary mechanism involves coordination between the electron-donating nitrogen atoms in its large conjugated structure and the aluminum sites in the natural Al-F and AlF 3 /AlF x layers of lepidolite. In contrast, only weak physisorption or hydrogen bonding occurred on albite, and virtually no adsorption was detected on quartz. This work establishes THQ-8 as a highly effective and selective collector for lepidolite, operating under milder process conditions and overcoming the key limitations of foam stability and corrosion associated with conventional reagents. Download: Download high-res image (212KB) Download: Download full-size image
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高影响因子
MICROCHEMICAL JOURNAL
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2021
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IF 4.821
Shan Luo,Yuanyuan Wang,Xianwen Kan
Ratiometric electrochemical sensing provides a new perspective for the accurate and reliable detection of different analytes since inner reference signal can effectively eliminate the internal and external interferences. There is still a challenge to explore new inner references for the development of ratiometric electrochemical sensing. Herein, a kind of redox-active metal-organic frameworks (Cu-THQ MOFs) was synthesized and characterized by scanning electron microscope, transmission electron microscope, X-ray powder diffractometer, and X-ray photoelectron spectroscopy techniques. Cu-THQ MOFs were composited with carboxylic group functionalized multi-walled carbon nantubes (MWCNTs-COOH) to construct a sensitive electrochemical sensor. The modified Cu-THQ MOFs not only showed good catalytic active to dopamine (DA), but also displayed the constant peak current with the increase of concentration of DA. And a separated oxidation peak potential of about 270 mV between DA and Cu-THQ MOFs can be observed. Accordingly, a current ratio ( i DA /i MOFs ) was employed as readout signal for DA detection with a linear range and limit of detection of 3.0 × 10 −7 – 4.0 × 10 −5 mol/L and 2.6 × 10 −8 mol/L, respectively. Compared with single signal of i DA , ratiometric strategy exhibited high accuracy and reliability for DA determination. The present ratiometric sensing strategy using MOFs as the inner reference may provide a new choice for future development of electrochemical sensors for other analytes reliable determination.
研究领域:
分析化学
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材料科学
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生物医学
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DOI
高影响因子
FOOD CHEMISTRY
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2019
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IF 5.399
Fan Du,Zhaoguang Yang,Peng Liu,Lin Wang
The bioaccessibility and speciation of arsenic (As) in rice grains have been investigated by the physiologically based extraction test (PBET) method. A total of 42 rice samples were collected from Hunan Province, a typical mine-impacted province in China. The bioaccessibility in the gastrointestinal tract was 71.7 ± 13.5% for the collected rice grains. Arsenite [As(III)] was the predominant As species in the simulated gastric and gastrointestinal solutions, followed by dimethylarsinic acid (DMA), arsenate [As(V)] and monomethylarsonic acid (MMA). The bioaccessible As(V) was irrelevant to As(V) in the rice grains, suggesting that interconversion between As(V) and other species was occurred in the simulated gastrointestinal tract. Monte-Carlo simulation was introduced to assess the health risk from exposure to inorganic As. The average values for target hazard quotient (THQ) and bioaccessible THQ were 2.704 and 1.637, respectively. The inclusion of bioaccessibility reduced the probability of non-carcinogenic health risk from 97.32% to 76.86%.
研究领域:
环境科学
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毒理学
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食品安全
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公共卫生
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DOI
PubMed
高影响因子
AQUATIC TOXICOLOGY
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2020
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IF 4.346
Shiwei Xie,Peng Yin,Lixia Tian,Yongjian Liu,Beiping Tan,Jin Niu
Antibiotics have been widely used (mainly mixed with feed) in aquaculture, while few studies have evaluated the interactions between feed composition and antibiotics. Sulfamethoxazole (SMX) is a fat-soluble antibiotic, an eight weeks feeding trial was conducted to investigate the interactions between dietary lipid levels and chronic exposure of legal aquaculture dose of sulfamethoxazole in juvenile largemouth bass Micropterus salmoides , and evaluated the possible human health risk. Six practical diets were formulated to three levels of crude lipid (11, 14.5, 18 %) and two levels of SMX (0 and 0.3 %), namely low fat (LF), moderate fat (MF), high fat (HF), low fat and SMX (LFS), moderate fat and SMX (MFS), high fat and SMX (HFS), respectively. Each diet was assigned to three tanks (20 fish per tank, average weight 30.65 ± 0.02 g). Growth and organ indices were increased by SMX. Higher malformation rate and lower hypoxia stress resistance were found in fish exposed to SMX than those not exposed. Cholesterol and bile acid synthesis related gene expressions were down-regulated by SMX exposure. Oxidative stress, inflammation and apoptosis were increased in fish exposed to SMX. Significant interactions between dietary lipid levels and SMX on renal immune response of fish were observed. Remarkable damage of intestinal histology was observed in fish fed the diet HFS. In addition, dietary SMX exposure increased pathogen susceptibility of largemouth bass and induced dysbiosis of gut microbiota. The concentrations of SMX in muscle of fish fed diets containing SMX were higher than those fed other diets, and close to the maximum residue limit (MRL) in China and international organizations. Although chronic legal aquaculture dose of dietary SMX also increased the target hazard quotient (THQ) and estimated daily intake (EDI), there is no health risk in adults and children consuming fish filet.
研究领域:
水产养殖
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环境毒理学
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鱼类生理学
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营养学
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食品安全
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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）