MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Chaojun He,Xiaohui Wang,Shanshan Zhang,Xiaoya Zhang
A sensomics-driven analytical platform was built for complex floral matrices. • Integrated HS-SPME-GC-O-MS and OAV mapping resolved 104 trace volatiles. • Omission tests successfully corrected discrepancies in independent OAV modeling. • Nine key chemometric markers were extracted to discriminate cultivar profiles. Quantifying and validating key odor-active compounds (OACs) in complex botanical matrices remains a significant challenge in modern analytical chemistry due to trace concentrations and complex matrix interferences. Traditional volatile profiling often relies solely on mass spectrometry (MS) or independent odor activity value (OAV) calculations, which fail to account for intermolecular synergistic or antagonistic effects. Applying this approach to Fengdan [FD] and Ziban [ZB] tree peony organs, 104 volatiles were mapped, revealing organ-specific metabolic tracks. PCA and HCA indicate significant differences in volatile compounds from different organs of peony. Through GC-O, OAV, aroma recombination, and omission experiments, 23 and 26 key aroma compounds were identified in ZB and FD petals, respectively, which contribute significantly to the formation of peony petals. Based on VIP > 1, nine key differential aroma compounds such as nonanal and geraniol were screened, which can be used to distinguish the petal aroma differences between FD and ZB. These findings provide a theoretical basis for the development of peony flower beverages and food. Download: Download high-res image (121KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Shu-shu Gao,Yun-feng Liu,Xiao-qing Yan,Li Yang,Run-qin Wang,Rong-rong Xing,Xuan Chen,Shuang Hu
● An alkyl polyglucoside-based switchable ternary supramolecular solvent was prepared. ● A switchable SUPRAS-DLLME procedure was established. ● The extraction mechanism was elucidated from multiple perspectives. ● The formation of SUPRAS was characterized by FT-IR and 1 H NMR spectroscopy. ● Wide-polarity analytes from traditional Chinese medicine were well enriched. A switchable supramolecular solvent based dispersive liquid-liquid microextraction method was developed for the preconcentration and determination of six main hepatotoxic ingredients in Chinese herbal medicine of “Psoraleae Fructus” combined with high performance liquid chromatography-ultraviolet detection. Based on the biodegradable alkyl polyglucoside and a switchable deep eutectic solvent composed of diethanolamine and hexanoic acid, a hydrophilic supramolecular solvent was prepared for the extraction of the target analytes from the aqueous sample solution, and the phase separation was obtained by adding hydrochloric acid solution. A combination of one-factor-at-a-time and central composite design was employed to investigate the primary factors influencing the extraction efficiency, including the composition and volume of alkyl polyglucoside-based switchable supramolecular solvent, the type and dosage of phase-switching trigger, extraction time and salt concentration of the sample solution. Under the optimal extraction conditions, the performance metrics of the proposed method were validated, demonstrating good linearity ( r ≥ 0.9979), low detection limits, satisfactory precisions (relative standard deviation≤6.4%) and spiked recoveries (90.3%–107.8%). The enrichment factors for six target analytes ranged from 64 to 666 greater than the published reports. The formation of the supramolecular solvent was characterized by utilizing Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy. The extraction mechanism was elucidated by analytes properties, theoretical calculation and the molecular docking. The greenness of the proposed method was assessed by AGREE and AGREEprep tools. The established method possessed good extraction efficiency and could effectively enrich the components with varying polarities in complex matrices. Download: Download high-res image (225KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yan Zhang,Yaoli Wei,Cristiano Varrone,Seongbong Heo,Jiating Hao,Zhihong Liu,Aijuan Zhou,Senlin Shao,Xiuping Yue
Coupling membrane extraction with chain elongation enables in-situ recovery of medium-chain fatty acids (MCFAs) from waste activated sludge, but interfacial instability and phase breakthrough remain major obstacles to practical application. To address this challenge, a thin-film composite (TFC) membrane was fabricated on a hydrophobic polytetrafluoroethylene (PTFE) porous membrane substrate via a polydopamine/polyethyleneimine (PDA/PEI) co-deposition strategy. TFC membrane significantly increased breakthrough pressure from 13 kPa (pristine PTFE) to 164–288 kPa, effectively preventing phase breakthrough. Notably, during the reactive extraction of MCFAs, the dense films in the TFC membrane did not hinder mass transfer; instead, enhanced both extraction efficiency (from 71.0% to 95.9%) and selectivity. These improvements arise from the enlarged interfacial reaction area provided by the rough film surface and the stronger binding of short-chain fatty acids to hydrophilic functional groups of the film, as confirmed by density functional theory (DFT) calculations. When integrated into a real chain elongation system, the adoption of the TFC membrane increased caproate production by 50%, accompanied by clear environmental and economic benefits (indicating promising economic prospects, with a net profit of 0.795 USD m −3 ). To our knowledge, this represents the first demonstration of TFC membranes in membrane extraction, revealing their unique ability to couple stability, efficiency, and selectivity, and opening new opportunities for sustainable MCFAs bioconversion.
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Shengchao Xu,Wanting Ma,Junxiong Zhao,Huiyu Wang,Qifeng Wei,Shanshan Wang,Xiulian Ren
Lactic acid (LA) is a crucial platform chemical for biodegradable plastics, primarily produced via microbial fermentation. However, the conventional purification process via calcium salt precipitation generates substantial calcium sulfate waste. This study proposes a novel solvent extraction method using di-(2-ethylhexyl) phosphoric acid (P204) to extract calcium ions from calcium lactate, thereby releasing LA into the aqueous phase. Under multistage counter-current conditions, calcium extraction and stripping efficiencies exceeded 99.7 % and 98.5 %, respectively, yielding a high-purity CaCl 2 ·2H 2 O by-product instead of calcium sulfate. The process demonstrated broad applicability to calcium salts of weak organic acids (p K a > ∼3.40). Mechanistic studies revealed a 2:1:1 (P204:Ca:LA) coordination complex. Green chemistry assessment confirmed the process’s environmental sustainability and practical viability. This work presents an efficient strategy for LA production that avoids calcium sulfate waste, contributing to greener biorefinery processes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2025
·Vol. 14
·期 12
·2006
·
IF 5.1
Jianing Wang,Meiqi Gao,Hongmei Li,Xinyan Hou,Aijun Gong,Yanqiu Cao
Endocrine disruptors (EDCs) in food pose a significant threat to health. This study developed a method for detecting seven EDCs (triclosan (TCS), triclocarban (TCC), methyltriclosan (MTCS), methylparaben (MeP), propylparaben (PrP), bisphenol F (BPF), and 4-hydroxybenzophenone-3-ethylcarboxylate (4HBP)) in honey. The method combines ultrasonic-assisted dispersive liquid–liquid microextraction with high-performance liquid chromatography. It achieved a recovery rate of 89.70–102.2%, with an RSD value of 1.1–3.9%. Additionally, this study tested 47 honey samples from seven countries, revealing detection rates of TCS at 29.79%, TCC at 19.15%, BPF at 97.87%, 4HBP at 36.17%, MeP at 82.98%, and PrP at 80.85%. Among the 12 nectar sources, citrus flower nectar had the highest TCS detection rate, mother grass nectar had the highest TCC detection rate, and multi-flower nectar had the highest 4HBP detection rate. Moreover, imported honey samples showed higher levels of TCS, BPF, and MeP contamination compared to domestic samples. Honey stored in PET bottles contained the highest levels of EDCs. Finally, health risk assessments indicated that, while the risk for adults is lower, monitoring EDC contamination in food should be strengthened to ensure consumer safety.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Houchun Yan,He Ma,Xuqiang Li,Tao Li,Wenxue Lu,Qingsong Li
For separating ethyl lactate from an aqueous solution, alkyl alcohols were selected as extractive solvents for experimental exploration and mechanism analysis. The liquid–liquid equilibrium data of {water + ethyl lactate + alkyl alcohols (1-pentanol, 1-heptanol, 1-octanol, and 1-nonanol)} were measured in 303.2 K and 101.3 kPa, and the distribution coefficient and separation factor of each system were calculated to evaluate the extraction effect. Meanwhile, the NRTL and UNIQUAC models were correlated with experimental data, and the model parameters were regressed. The UNIFAC model was used to predict the LLE data. The regression model parameters were checked using the GMcal_TieLinesLL tool, and the results meet the Gibbs stability criteria. The separation mechanism was explored by analyzing σ-profile, deformation charge density, interaction energy, and RDG analysis.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Hu Wenxu,Ge Dandan,Fu Feie,Yuan Lin,Yang Chunyan,Weng Zhehui,Huang Yao
In this study, a new liquid phase microextraction method was developed by combining micelle-mediated extraction of aristolochic acids (AAs) in traditional Chinese medicines with polyfluorinated alcohol solutions, and subsequent preconcentration via deep eutectic solvent (DES)–induced supramolecular solvent (SUPRAS) formation. The preparation of SUPRASs with polyfluorinated alcohols functioning as amphiphiles and the DESs acting as coacervation agents is demonstrated for the first time. Different polyfluorinated alcohols and DESs were examined for the extraction and preconcentration of AAs. The SUPRAS prepared from hexafluorobutanol (HFB) and a DES based on (1) octanol:(2) fenchyl alcohol achieved the highest extraction efficiency. Compared to traditionally used surfactants such as octanol, octanoic acid, and octylamine, HFB exhibited better extraction efficiency of AAs. The optimized method provided good linearity in the range of 0.14–500 µg g −1 for AA-I and 0.1–600 µg g −1 for AA-II with determination coefficients higher than 0.9961. The limits of detection were 0.03 – 0.04 µg g −1 , which were lower than those of the limits stipulated by the Chinese Pharmacopoeia (0.001%, w/w). The extraction recoveries ranged between 89.2 and 107.8%. The conventional methods for extracting analytes from solid samples typically involve an initial extraction phase utilizing hazardous organic solvents. The developed method can be applied to extract and preconcentrate a wide range of trace analytes from different solid samples by eliminating the need for harmful organic solvents. The developed method is efficient and reliable and can be applied to determine AAs in natural plants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2026
·
IF 10
Mengyao Qi,Zhenkai Luo,Hang Liang,Weijun Peng,Wei Wang,Yijun Cao,Longyu Zhang,Yukun Huang
To address the technical bottleneck of declining hydrophobicity in finely ground minerals that leads to low recovery of traditional hydrocarbon oil collectors, this study utilized computational simulations to design and synthesize a novel collector. Simulation calculations showed that dodecyl xanthogenic acid (DXA-C12) had a comprehensive adsorption effect on both the “basal” and “edges” of molybdenite. Micro-flotation tests showed that DXA-C12 had significant flotation advantages for micro-fine grained molybdenite compared with the traditional kerosene and xanthate combined collector. DXA-C12 interacted with the “basal” and “edges” of molybdenite through hydrophobic and chemical forces, respectively. The DXA-C12 carbon chain drove the interaction with the “basal” and adsorbed in a tiled form. In contrast, C=S supplied electrons to the Mo atoms in “edges”, forming adsorption in an upright form. For the actual micro-fine grained molybdenum ore with a particle size of −38 μm accounted for 97 % and Mo grade of about 4.00 %, using DXA-C12 as the collector could obtain the concentrate with Mo grade and recovery of 39.099 % and 99.68 %, respectively. The study provided a novel collector for micro-fine grained molybdenum ore, and had an important reference significance for the development of other new types of collectors.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Analysis and Testing
·
2026
·
IF 7
Lu Heng,Chen Jingru,Zhang Maosheng,Guo Liangqia
Microplastics (MPs) are emerging pollutants, considered one of the most serious threats to the ecosystem and human health. Nile Red (NR) is the most widely used dye for visualizing MPs. However, NR staining is affected by natural organic materials and shows weak fluorescence for certain types of MPs, such as polyamide (PA) and polyvinyl chloride (PVC), as well as MPs with fiber morphology. Herein, a rapid, universal staining method for visualizing MPs was proposed, using CsPbBr 3 perovskite nanocrystals (NCs) as a fluorescent dye synthesized by natural deep eutectic solvents (NADESs) as solvents and surface ligands (CsPbBr 3 @NADESs NCs). The staining method proved to be highly effective for common MPs, including PA and PVC MPs. Moreover, natural organic substances, such as cellulose, lignin, mussel shell, chitin, clam shell, shrimp shell, humic acid, and sand grains, could not be stained by CsPbBr 3 @NADESs NCs, which allowed MPs to stand out for visual detection even that the environmental samples were incompletely pre-treated. This study demonstrated CsPbBr 3 @NADESs NCs as a promising fluorescent dye for visual detection of MPs in environmental samples.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2026
·
IF 8.1
Chaojun Yang,Zijian Feng,Zhe Dong,Yu Li
The development of polymer materials with flame-retardant and microwave-absorbing properties reduced fire risks and mitigated electromagnetic interference, representing an important direction in advanced materials research. In this work, La x Sm 1-x Mn 2 O 5 (xLSMO) mullite with varying La doping levels (molar ratio, x = 0.1, 0.3, 0.5) was synthesized via a co-precipitation method, and the effects of LSMO on the flame-retardant and microwave-absorbing properties of epoxy resin (EP) were investigated. The results demonstrated that LSMO exhibited excellent catalytic charring ability and a pronounced nucleating effect, effectively enhancing the compactness and strength of the char layer and thereby improving the fire safety of EP. When the La doping level was 0.3 and the LSMO loading in EP was 1wt%, the limiting oxygen index (LOI) increased from 24.1% to 32.3%, and a V-1 rating was achieved in the UL-94 test. The peak heat release rate (PHRR) and total heat release (THR) were reduced by 45.32% and 32.69%, respectively. In addition, the incorporation of LSMO endowed EP with favorable electromagnetic wave absorption capability, with a minimum reflection loss reaching −36.87 dB in the frequency range of 1–18 GHz. Therefore, the EP/LSMO composites exhibited considerable potential as multifunctional integrated materials in the fields of public safety and electromagnetic protection technology.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Ren Qian,Zhang Xin
The usage of electronics has led to the issue of electromagnetic wave pollution, and the demand for materials that can absorb electromagnetic waves is increasing. The longevity of materials may be impacted by damage caused during use. Here, a composite strategy with efficient electromagnetic wave absorption and self-healing through induction heating is proposed. Ni/PUF/PU@ER (NPPE), Cu/Ni/PUF/PU@ER (CNPPE), and Ni/PANI/PU@ER (NPAPE) microcapsules with magnetic and conductive characteristics were prepared by interface polymerization, in situ polymerization, and electroless plating methods. Their superior mechanical and thermal durability guarantee the long-term stability of the healing agent. The minimum reflection loss of the composite with NPAPE is –54.62 dB at 1.85 mm, and the effective absorption bandwidth (EAB) is 3.95 GHz. Additionally, the EAB reaches 4.32 GHz at 1.93 mm, surpassing the RL min and EAB values of the majority of similar materials. Due to the exceptional electromagnetic synergy of NPAPE, the composite exhibits the most outstanding induction heating performance. The material reaches 68.3 ° C within 10 min, which is higher than the temperatures of the other two materials. Furthermore, the crack area of the composite significantly reduces, demonstrating excellent quick self-healing characteristics for damage. This novel strategy is conducive to promoting the development of the circular economy and can introduce a worthwhile research direction into the field of electromagnetic wave absorption.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Qian Lin,Guangju Ma,Xinmin Liu,Cai Wang,Xueyu Lu,Zhaoyang Liu,Qingrui Zhang,Jianbo Liu
Phenolic pollutants, particularly polyphenolic compounds, present a significant challenge in wastewater treatment due to their refractory nature, which leads to excessive emissions and substantial ecological risks. This study designed and synthesized a novel hydrophobic deep eutectic solvent (HDES) and systematically elucidated the microscopic mechanism of its highly efficient phenol extraction. Initially, three HDES systems were screened based on the Conductor-like Screening Model for Real Solvents (COSMO-RS) model. Molecular dynamics (MD) simulations demonstrated that HDES3 exhibited the best performance. MD simulations further revealed that electrostatic interactions (E elec ) dominate the phenol extraction process, while radial distribution function (RDF) and spatial distribution function (SDF) analyses indicated that a 1:1 hydrogen bond donor-acceptor (HBA-HBD) ratio creates stronger interaction sites. Experimental results showed that the extraction efficiencies for phenol and hydroquinone reached 99.9 % and 97.7 %, respectively, with the total phenol concentration in wastewater reduced from 6300 mg/L to 57.6 mg/L. The extraction mechanism was also elucidated. Electrostatic potential (ESP) and independent gradient model based on Hirshfeld partition (IGMH) analyses demonstrated that the oxygen atoms on the hydroxyl groups in HDES3 (1:1) form additional interaction sites with the O atoms of phenolic compounds, where hydrogen bonding plays a dominant role, synergistically enhanced by van der Waals (vdW) forces to significantly increase interaction strength. This study proposes an efficient phenolic pollutant extraction technology based on an HDES system, providing a green and high-performance solution for coal gasification wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）