ANALYTICA CHIMICA ACTA
·
2025
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IF 6
Kai Hua,Jiahao He,Xingtong Li,Congyi Zheng,Lingrui Ji,Qingyan Wu,Xi Chen,Ke Gao,Wei Wei,Liping Lu
Liquid crystal monomers (LCMs) are a class of emerging organic pollutants widely used in liquid crystal displays (LCDs) of various electronic products. LCMs can easily be released from LCDs into indoor environments and may pose potential environmental and health risks. Meanwhile, LCMs exhibit a wide range of saturation vapor pressures (PL) and octanol-air partition coefficients (Koa), which enable their presence in various indoor metrices. However, current research on LCMs within indoor multi-medium contexts remains limited. The development of effective analytical methods could significantly advance related research endeavors. This study developed a method using ultrasonic extraction to extract 70 LCMs from dust, gas, and particle samples, and analyzed them using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (GC × GC-TOF MS). The recoveries of 70 LCMs in dust, gas and particle phases ranged from 77.7 % to 116 %, 73.8 %–127 %, and 62.1 %–147 %, respectively. The instrument's detection limits and quantification limits were 0.01–1.10 ng/mL and 0.04–3.67 ng/mL, respectively. This demonstrated that the method exhibited satisfactory accuracy and sensitivity, and was further applied to analyze 70 LCMs in indoor dust, gas, and particle phases. 52 LCMs were detected in all three matrices, with significant differences in the distribution of these LCMs across the multi-medium. This method is suitable for determining LCMs concentrations in dust, gas, and particle phases, facilitating a more comprehensive analysis of the occurrence levels of indoor LCMs, and providing a technical reference for future studies on the partitioning behavior and risk assessment of LCMs in indoor multi-medium environments, thereby enhancing our understanding of their environmental impact.
研究领域:
环境科学
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分析化学
✓ 已验证
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2024
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IF 6.7
Jijuan Zhou,Dianlong Ge,Yue Liu,Yajing Chu,Xiangxue Zheng,Yan Lu,Yannan Chu
Cellular volatile organic compound (VOC) detection is crucial for studying lung cancer biomarkers. However, the reported VOC biomarkers from the same cell line seem to be inconsistent across different research groups. It is possibly related to the variation in culture media, and the result obtained by a conventional single medium approach (SMA) depends on what medium is used in the cell experiment. This study proposes a multiple media approach (MMA) to investigate reproducible characteristic VOCs of lung cancer cells. Using solid-phase microextraction–gas chromatography–mass spectrometry (SPME-GC-MS) in combination with untargeted analysis, we conducted two independently repetitive experiments to compare lung cancer cells (A549) and normal lung cells (BEAS-2B) under three culture media conditions (RPMI 1640, DMEM, and Ham’s F12). Both experiments indicated that, compared with 62–96 VOCs obtained by the SMA, only two VOCs (3-methyl-1-butanol and 2-methyl-1-butanol) were reproducibly achieved by the MMA. Moreover, their concentrations were significantly lower in lung cancer cells than in normal cells. Further targeted analysis confirmed the downregulation trend of both VOCs in subcutaneous and primary tumor tissues from the lung cancer model mouse. The present work demonstrated that the MMA cell experiment, just like the multicenter trials for cell lines, can facilitate the discovery of reproducible characteristic VOCs. This provides a cellular experimental basis and scientific evidence for lung cancer biomarker investigation and even breath biopsy technique development.
研究领域:
医学
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分析化学
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肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Ye Zhang,Tianyue Ma,Feng Zhang,Wei Guo,Kai Yu,Chunyu Yang,Fengyu Qu
Solar-driven interface water evaporation is a promising strategy for desalination and wastewater treatment. However, it remains a huge challenge to simultaneously achieve a high light-to-heat conversion efficiency (η) and multi-media evaporation applications. In this study, a highly efficient Janus hydrogel photothermal film was developed using yolk-like non-stoichiometric nickel sulfide (NiS 2-x ) microspheres and agar hydrogel. The NiS 2-x immobilized in the agar hydrogel has full-spectrum absorption characteristics at 200–2500 nm, which can perform efficient light-to-heat conversion and regulate water transport channels. Additionally, the pure agar in the bottom can transport water effectively and avoid heat loss. By the pouring method, the Janus hydrogel film can be easily prepared into various shapes; hence, it can be adjusted depending on the environment in which it is used. The optimized Janus hydrogel film (Janus hydrogel-1) possessed good hydrophilicity and showed an excellent solar evaporation rate of 1.45 kg m -2 h −1 , and a high η of 97% under one-sun irradiation. Theoretical simulation results showed that the outstanding water evaporation performance of Janus hydrogel-1 was mainly due to its relatively free water transport channels. Janus hydrogel-1 can be used for water evaporation applications in various media, including seawater, heavy metal ion/organic wastewater, and domestic sewage. Our work highlights the great potential of Janus hydrogel-1 for realizing a highly effective solar energy-driven interface water evaporation and multi-media purification.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Environmental Science-Advances
·
2025
·
IF 4.4
Jiaying Wang,Xue Wang,Zaihong Zhu,Saixia Ying,Kashif Hayat,Xiaoxia Bai,Shuren Liu,Xuexi Xiao,Chongwei Jin,Weiping Liu
Short-chain chlorinated paraffins (SCCPs) are widely found in the environment. However, limited information exists on the inter-media exchange and migration of SCCPs in the same region. In this study, a comprehensive survey of SCCPs was performed on various environmental substrates (including the surface soil, groundwater, and air) from a large petrochemical park in the Yangtze River Delta, and a total of 24 congener groups were measured. The SCCP concentrations, spatial variations, congener group profiles, and environmental behaviors during the water–land–atmosphere cycle in a typical industrial area were investigated. The ΣSCCP concentrations in the surface soil and groundwater within the petrochemical factory and in the atmosphere in the petrochemical factory perimeter were 108–745 ng g−1, 1133–2994 ng L−1 and 12.1–30.5 ng m−3, respectively. The concentrations and homologue patterns of SCCP significantly varied across different sampling sites, which was attributed to the distances between the sampling sites and workshops, as well as the diverse CP products or byproducts involved in the processing activities. The congener profile revealed that C10Cl8,9 and C13Cl8,9 were the major SCCP homologue groups in the soil within the petrochemical park, whereas C10Cl5–7 and C13Cl5–7 were the predominant congeners in the groundwater, and C12,13Cl7,8 was the dominant SCCP congener group in the atmosphere around the petrochemical park. With respect to the air-soil and soil–water exchange behaviors, the majority of fugacity fraction values for the air–soil and soil–groundwater samples were less than 0.3 and greater than 0.7, respectively, indicating the dominant deposition of SCCP congeners from the air to the soil and permeation into groundwater from the soil within the petrochemical park. To date, the preliminary risk assessments have indicated that SCCPs pose a low ecological risk in the petrochemical zone and pose a low risk to humans through dust ingestion and dermal contact.
研究领域:
环境科学
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环境化学
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产业生态学
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大气化学
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水文学
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土壤科学
✓ 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）