FIRE SAFETY JOURNAL
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2020
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IF 2.295
Junchao Zhao,Song Lu,Yangyang Fu,Muhammad Usman Shahid,Heping Zhang
Ultra-fine dry chemicals, as an effective fire suppressant, may have higher fire extinguishing efficiency and the ability to inhibit pool fires re-ignition after oil-repellent treatment. Thus, we used two surfactants , i.e. POTS (1H,1H,2H,2H-perfluorooctyltrimethoxysilane) and OBS (Sodium perfluorononyloxybenzenesulfonate) to modify fine sodium bicarbonate and studied the effect of POTS/OBS compound ratios on powders oil-repellency. SEM images revealed the structures of the modified powders, and XPS confirmed that the modifiers were successfully grafted on the surface of powders. The fire extinguishing experiments showed that the dry chemicals after modified would have higher fire extinguishing efficiencies, especially after OBS added. Furthermore, the isolation layer formed by modified powders was observed on the fuel surface after fire extinguishing, which would effectively inhibit the re-ignition of aviation kerosene.
研究领域:
消防工程
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材料科学
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化学工程
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DOI
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
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2026
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IF 3.2
Tao Yin,Chaoyi Bian,Yunxia Cao
Background Sodium p-perfluorous nonenoxybenzene sulfonate (OBS) is an emerging polyfluoroalkyl ether sulfonate with environmental persistence and potential biological toxicity. However, its effects on male reproductive health and associated molecular alterations remain poorly understood. Methods Network toxicology, transcriptomic and single-cell transcriptomic analyses, data-independent acquisition-based proteomics, molecular docking, and mouse experiments were integrated to investigate OBS-associated spermatogenic toxicity. Results FAAH and LIPE were prioritized as candidate targets potentially associated with OBS-induced spermatogenic impairment. In human non-obstructive azoospermia datasets, FAAH and LIPE were downregulated and showed discriminatory ability between affected and control samples. Molecular docking predicted potentially favorable interaction conformations between OBS and the two proteins. In mice, exposure to 0.5 or 2.5 mg/kg OBS was associated with disrupted seminiferous tubule architecture, impaired sperm quality, reduced testicular FAAH and LIPE expression, and fewer offspring after mating. Conclusion OBS exposure was associated with impaired spermatogenesis and reduced male reproductive performance in mice. FAAH and LIPE may be involved in OBS-associated testicular injury, although their functional roles and direct interactions with OBS require further experimental validation. These findings provide additional evidence of the male reproductive toxicity of OBS and highlight the need for continued evaluation of emerging PFAS alternatives. Download: Download high-res image (311KB) Download: Download full-size image
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Ju-Xiang Chen,Jia-Wei Song,Nai-Yun Gao,Yu-Qiong Gao,Yi-Xuan Hu
Sodium p-perfluorous nonenoxybenzenesulfonate (OBS), as a novel perfluorinated compound (PFC), has garnered significant attention due to its widespread application. However, its molecular structure is highly stable, making it difficult to degrade. This experiment employs an ANN model and SHAP interpretation method to optimize DBD plasma for highly effective removal of OBS. Under multi-objective optimization of the ANN model (treatment time: 20 min; pH: 4; conductivity: 36 μS/cm; initial concentration: 37.5 mg/L; input power: 40.5 W), the OBS removal rate and energy yield were 91.8 % and 7.659 g/kW•h, respectively. In SHAP analysis, treatment time has the greatest impact on both removal rate and energy yield. Even in the presence of interfering inorganic anions (NO 3 − , HCO 3 − , and Cl − ), DBD plasma could achieve an effective removal rate of over 60 % for OBS. Free radical quenching experiments, density functional theory (DFT), and LC-MS indicate that OBS undergoes under the influence of •OH, •O 2 − , 1 O 2 , and e aq − , involving desulfonation processes, ether cleavage and perfluorinated chain shortening processes. According to ECOASR and T.E.S.T. toxicity analyses, although some toxic byproducts may be generated during the OBS removal process, the environmental risk was low. In complex real-world aquatic environments, the OBS still achieves an effective removal rate exceeding 70 %, demonstrating the broad application prospects of DBD plasma.
研究领域:
环境科学
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等离子体化学
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化学工程
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水处理技术
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机器学习应用
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毒理学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Dongxiang Li,Xing Qian,Changshuo Lian,Rui Huang,Ziyi Hao,Ming Cheng,Shuping Li,Chunfang Li,Shahid Iqbal,Lianjie Qin,Jikuan Zhao
The critical micelle concentration (CMC) is one main parameter of surfactants , so an accurate, rapid, and convenient method for CMC determination is of great significance for surfactant applications. In this paper, three samples of carbon quantum dots (CQDs) with different fluorescence properties were developed as fluorescent probes for the CMC determination of CTAB , SDS , Triton X-100, perfluoro OBS and Pluronics® P-123. The fluorescence excitation and emission spectra of a constant amount of the CQDs in different concentrations of the surfactant solution were recorded, and then the CMC values of the surfactant were deduced from the fluorescence intensity change and the Stokes shift variation. The obtained CMC data using three samples of the CQDs agree well with those in the published literature. It is also demonstrated that in the micellization process the interaction between the CQDs and the surfactant molecules is complicated, because the fluorescence properties of the CQDs are found to be related to the characteristics of the CQDs, the head group type of ionic surfactants , the chemical structure between the hydrophobic and hydrophilic segment, and the chemical nature of the hydrophobic chains of the surfactants. So, the CQDs are demonstrated to be located at the palisade layer in the surfactant micelles due to the surface-attached polar groups on the CQDs although the CQDs are mainly hydrophobic as fluorescent probes. The fluorescent CQDs are considered to be new choices of the fluorescent probes in the facile CMC measurement of the surfactants.
研究领域:
化学
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材料科学
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分析化学
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胶体科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Jing Huang,Qiyu Wang,Shuai Liu,Hong Lai,Wenqing Tu
6:2 Chlorinated polyfluorinated ether sulfonate (F-53B) and sodium p -perfluorous nonenoxybenzene sulfonate (OBS) are widely used as perfluorooctane sulfonate (PFOS) alternatives in the Chinese market. Here, adult zebrafish were chronically exposed to 1 μM PFOS, F-53B, and OBS for 21 days to investigate the comparative immunotoxicity of these three per- and polyfluoroalkyl substances (PFAS). PFOS induced more severe oxidative stress in the liver than F-53B and OBS, and these three PFAS induced similar anti-inflammatory effects by repressing the expression of pro-inflammatory cytokines. The intestinal microbiota analysis showed that the relative abundance of Plesiomonas , Aeromonas , Cetobacterium , Shewanella , and Vibrio changed with the same trend in the three PFAS treatment groups. Furthermore, the PFAS increased the expression of hepcidin , muc , the immune-related genes mpo and saa , and decreased the expression of the tight junction-related gene occ in the intestine; moreover, villus height of the intestine was reduced after PFAS exposure, which indicated the functional disruption of the intestine. In particular, the significant correlation between the changed intestinal microbiota and liver and intestinal indicators also suggested the interaction between the immune system and intestinal microbiota. Taken together, our results indicate that exposure to PFOS and its alternatives F-53B and OBS can induce hepatic immunotoxicity associated with intestinal microbiota dysbiosis in adult zebrafish.
研究领域:
环境毒理学
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免疫毒理学
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微生物组研究
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产品关联
DOI
PubMed
高影响因子
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