SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yuxin Qi,Ying Bi,Chao Kong,Changyin Zhu,Hu Cheng,Yinlong Zhang,Jiangang Han,Jianming Xue,Ziyan Li,Yang Song,Dongmei Zhou
Recycling difficult-to-degrade plastics, also known as “white pollution”, is currently being researched in the fields of materials and the environment, which is an extremely challenging topic. In this study, a pyrolysis-activation method combined with multiple activators was developed to prepare stable porous plastic chars (PPCs) from discarded plastic bottles for removing the typical antibiotic sulfamethoxazole (SMX). Micro/mesopores were formed in the PPCs, with the specific surface area reaching 961.20 m 2 /g. C, O, and N were the main elements in the PPCs, and their atomic ratios showed the hydrophobicity and aromaticity. Graphite-like structures and abundant surface functional groups were generated in the PPCs. Unlike conventional char materials, impurities, such as aluminum oxide, have high reflectivity, resulting in the appearance of many shining spots. PPCs display a high sorption capability for SMX, with the maximum sorption quantity determined reaching 487.52 mg/g. Multilayer sorption is dominated by physical processes, and pore filling, partitioning, hydrogen bonding, π-π stacking, and electrostatic interactions are the main sorption processes. Chemical-like sorption and mass transfer control the sorption rate. Furthermore, PPCs have stable performance and good recyclability and could be used for practical applications. This study provides a novel strategy and an example of the upcycling of discarded plastic as an excellent char material for environmental remediation.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHROMATOGRAPHIA
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2022
·Vol. 85
·期 9
·851-863
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IF 2.213
Jiang Xiao-Xue,Sun Yue-Na,Zhang Chen,Yang Zhao,Yu Li-Qing,Lv Yun-Kai
In this paper, SiO 2 @MOF-199 composite with core–shell structure was prepared by in-situ growth of MOF-199 on the surface of SiO 2 microspheres, and SiO 2 @MOF-199 coated fiber was prepared for headspace solid phase microextraction (HS-SPME) of phthalate esters (PAEs) in plastic bottled milk. The prepared SiO 2 @MOF-199 has both mesoporous structure of SiO 2 and microporous structure of MOF-199. The hierarchical porous structure not only gives the analyte higher adsorption performance, but also improves the diffusion rate of the analyte in SiO 2 @MOF-199. The coated fibers have good thermal stability and are relatively uniform in size and structure. The extraction conditions of the prepared fibers for PAEs were optimized by single factor optimization and response surface Box-Behnken design. Under optimized conditions, the fiber displays wide linear ranges of PAEs (dimethyl phthalate, diethyl phthalate and diallyl phthalate are 5–800 ng L −1 , di-n-butyl phthalate, butyl benzyl phthalate and di-n-octyl phthalate are 50–1000 ng L −1 ), low limits of detection (0.3–19.8 ng L −1 ), and high enrichment factors (325–2089). The intra-day and inter-day relative standard deviations (RSD) for PAEs extractions using a single fiber were (4.7–8.5%) and (5.7–9.1%), respectively. The fiber-to-fiber reproducibility for three fibers prepared in parallel was 7.2–11.3% (RSD). The method was successfully applied to the extraction of PAEs from plastic bottled milk and to the quantitation by a gas chromatograph with a flame ionization detector. The average recoveries were 84.0% to 105%.
研究领域:
分析化学
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材料科学
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DOI
高影响因子
Nature Communications
·
2017
·Vol. 8
·期 1
·1-13
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IF 12.124
Zhang Zhaobin,Hu Ying,Guo Jilong,Yu Tong,Sun Libei,Xiao Xuan,Zhu Desheng,Nakanishi Tsuyoshi,Hiromori Youhei,Li Junyu,Fan Xiaolin,Wan Yi,Cheng Siyu,Li Jun,Guo Xuan,Hu Jianying
Bisphenol A (BPA) is used in the production of plastic but has oestrogenic activity. Therefore, BPA substitutes, such as fluorene-9-bisphenol (BHPF), have been introduced for the production of so-called ‘BPA-free’ plastics. Here we show that BHPF is released from commercial ‘BPA-free’ plastic bottles into drinking water and has anti-oestrogenic effects in mice. We demonstrate that BHPF has anti-oestrogenic activity in vitro and, in an uterotrophic assay in mice, induces low uterine weight, atrophic endometria and causes adverse pregnancy outcomes, even at doses lower than those of BPA for which no observed adverse effect have been reported. Female mice given water containing BHPF released from plastic bottles, have detectable levels of BHPF in serum, low uterine weights and show decreased expressions of oestrogen-responsive genes. We also detect BHPF in the plasma of 7/100 individuals, who regularly drink water from plastic bottles. Our data suggest that BPA substitutes should be tested for anti-oestrogenic activity and call for further study of the toxicological effects of BHPF on human health.
研究领域:
环境科学
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毒理学
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生殖生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
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2022
·Vol. 45
·期 23
·4224-4235
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IF 3.614
Ruozhu Xu,Yuan Tao,Wang Yao,Honglin Qin,Lizhen Qiao
In this study, three-dimensional flower-like tin disulfide materials were prepared, and a highly efficient dispersive solid-phase extraction method was developed using the obtained three-dimensional tin disulfide adsorbents for the preconcentration and determination of six endocrine-disrupting phenols in combination with high-performance liquid chromatography-ultraviolet detection. Several important experimental parameters influencing extraction efficiency were investigated, including the amount of adsorbent, ultrasound time, sample solution pH, sample volume, type of elution solvent, desorption time, and the number of desorption times. Under the optimized experimental conditions, the developed method showed good linearity with the determination coefficients of 0.993–0.998 in the linear range of 0.5–400 ng/ml and low limits of detection in the range of 0.15–1.0 ng/ml, as well as satisfactory intra-day and inter-day precisions with relative standard deviations of 0.1–9.8%. Finally, the proposed method was successfully applied for the enrichment and determination of trace endocrine-disrupting phenols in milk, tea beverage, and plastic bottled water samples, and acceptable recoveries were obtained from 70.1% to 119.1% under four different spiked concentration levels. The results showed that the three-dimensional tin disulfide materials had great potential for the extraction of endocrine-disrupting phenols contaminants in environmental and food samples.
研究领域:
分析化学
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环境科学
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食品科学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2020
·
IF 6.306
Qiuhua Wu,Yuhong Song,Qianqian Wang,Weihua Liu,Lin Hao,Zhi Wang,Chun Wang
A magnetic o -hydroxyazobenzene (M-HAzo) porous organic polymer was facilely prepared by a green azo coupling reaction in aqueous solution. The prepared M-HAzo was applied as a new adsorbent for the first time to pre-concentrate phthalate esters (PAEs) from plastic bottled juice, followed by their determination with high performance liquid chromatography-ultraviolet detection. The effects of various parameters, i.e., the mass ratio of the Fe 3 O 4 @SiO 2 to HAzo, extraction time, ionic strength, pH of the sample, desorption conditions were optimized. Under the optimized conditions, the M-HAzo based method exhibited good performance in terms of linear range (0.3–50.0 μg L −1 ), detection limit (0.08–0.50 μg L −1 ), accuracy (recovery of 78.0–115.0%) and repeatability (relative standard deviation of 2.9–7.8%). This work provides a sensitive method for analysis of PAEs at trace levels in drinks, which is featured with high sensitivity, simple operation and environmentally-friendly merit and will have a promising potential in analysis of other organic pollutants.
研究领域:
分析化学
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环境科学
·
食品科学
✓ 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）