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学者姓名：傅红
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Abstract ：
Endogenous substances, such as organic acids in food, can interfere with the detection of trace residues. To eliminate this effect, the magnetic adsorbent material was obtained by directly modifying acidified Fe3O4 with Nβ-(aminoethyl)-γ-aminopropyltrimethoxysilane (KH792) as an amination reagent. The optimal modification condition of KH792 for acidified Fe3O4 was optimized by response surface methodology, which was 82.5℃, pH=4.9, and KH792 addition of 1.8 mL. Under these optimal conditions, the acidified Fe3O4 directly modified by KH792 has an adsorption capacity of 22.8 mg/g and shows a 188% increase in the adsorption capacity of the gallic acid compared to commercially available Fe3O4. Additionally, the modified Fe3O4 exhibits excellent performances of rapid solid-liquid separation, good stability, and dispersibility. The properties of the directly modified products were characterized by BET, Zeta potential, FTIR, and XPS. The results show that KH792 bonds on Fe3O4 surface hydroxyl group's by Fe− O− Si bonding, and acidification improves the number of hydroxyl groups on Fe3O4 surface, thus improving the KH792 modification for Fe3O4. The magnetic products prepared in this work can be used for the purification of organic acids in complex sample matrices. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
Keyword ：
Amines Amines Magnetite Magnetite Organic acids Organic acids Silicon Silicon Silicon compounds Silicon compounds
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| GB/T 7714 | Zhou, Shuwei , Fu, Hong , Yang, Fang . Preparation and performance characterization of primary secondary amine-modified Fe3O4 magnetic materials [J]. | Acta Materiae Compositae Sinica , 2024 , 41 (4) : 1977-1986 . |
| MLA | Zhou, Shuwei 等. "Preparation and performance characterization of primary secondary amine-modified Fe3O4 magnetic materials" . | Acta Materiae Compositae Sinica 41 . 4 (2024) : 1977-1986 . |
| APA | Zhou, Shuwei , Fu, Hong , Yang, Fang . Preparation and performance characterization of primary secondary amine-modified Fe3O4 magnetic materials . | Acta Materiae Compositae Sinica , 2024 , 41 (4) , 1977-1986 . |
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Abstract ：
Pigments and organic acids are among the most common impurities in complex sample matrices. Their presence in the samples often interferes with the detection of trace analytes. This study aimed to design and develop magnetic materials (GCB/Fe3O4-PSA) for the efficient purification of organic acids and pigment impurities in sample matrices. We employed the acid modification method to enhance the modification of magnetic Fe3O4 by the primary secondary amine adsorption group (PSA), effectively boosting its adsorption performance. This modification technique not only retains the inherent adsorption characteristics of Fe3O4 but also avoids the irreversible damage to Fe3O4 ' s own adsorption by traditional grafting methods. Subsequently, Fe3O4-PSA and graphitized carbon black (GCB) were combined through a simple physical assembly method to prepare GCB/ Fe3O4-PSA, which was used for the purification of pigments and organic acids in complex matrices. During the purification process, GCB/Fe3O4-PSA can be rapidly magnetically separated. After six reuses, the adsorption performance remains above 80 %, fully demonstrating the rapid purification ability and reusability potential of GCB/Fe3O4-PSA. Compared with unmodified Fe3O4, GCB/Fe3O4-PSA significantly enhanced the purification effect of complex matrices. Its adsorption capacities for chlorophyll and ascorbic acid increased by 276.9 % and 263.9 % respectively. After combining with the GCB/Fe3O4-PSA 3 O 4-PSA purification material, cathinones in complex matrix samples (tea, apples, carrots) were determined using UPLC-MS/MS. The recoveries in spiked samples ranged from 96.35 % to 104.17 %, with the RSDs < 3.02 %. Simultaneously, characterization methods such as SEM, FTIR, XRD, VSM, XPS, and BET were used to study the surface structure and chemical composition of GCB/ Fe3O4-PSA. 3 O 4-PSA. The above results highlight the outstanding performance of GCB/Fe3O4-PSA in the efficient purification of organic acids and pigments in complex matrices and also show its considerable application potential in the pretreatment of complex matrix samples.
Keyword ：
Cleansing Cleansing Complex matrices Complex matrices Graphitized carbon black Graphitized carbon black Magnetic material Magnetic material Primary secondary amine Primary secondary amine
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| GB/T 7714 | Zhou, Shuwei , Wu, Qiong , Wang, Qiaoxia et al. Assembly of primary secondary amine over magnetic graphitized carbon black material for selective cleansing of sample matrices [J]. | MICROCHEMICAL JOURNAL , 2024 , 205 . |
| MLA | Zhou, Shuwei et al. "Assembly of primary secondary amine over magnetic graphitized carbon black material for selective cleansing of sample matrices" . | MICROCHEMICAL JOURNAL 205 (2024) . |
| APA | Zhou, Shuwei , Wu, Qiong , Wang, Qiaoxia , Fu, Hong , Yang, Fang . Assembly of primary secondary amine over magnetic graphitized carbon black material for selective cleansing of sample matrices . | MICROCHEMICAL JOURNAL , 2024 , 205 . |
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Abstract ：
建立了同时测定茶叶中17种卡西酮类物质的超高效液相色谱-三重四极杆串联质谱(UPLC-MS/MS)方法.样品以乙腈提取,150 mg N-丙基乙二胺(PSA)和100 mg石墨化炭墨(GCB)分散固相萃取净化,乙腈和20 mmol/L乙酸铵-0.1％甲酸溶液为流动相,五氟苯基色谱柱(2.1 mm×100mm,5 μm)分离,正离子模式电喷雾电离,多反应监测模式(MRM)测定,基质匹配标准工作曲线外标法定量.结果表明,7 min内可完成17种卡西酮类物质的检测,方法在0～100 μg/L范围内具有良好的线性关系,相关系数均大于0.996.方法的检出限和定量限分别为0.2～0.5 µg/kg和1～2 µg/kg.在空白样品中进行2,4,20 μg/kg加标回收实验,17种卡西酮类物质的回收率为70.9％～117.4％,相对标准偏差为0.7％～11％.
Keyword ：
分散固相萃取 分散固相萃取 卡西酮类物质 卡西酮类物质 茶叶 茶叶 超高效液相色谱-三重四极杆串联质谱(UPLC-MS/MS) 超高效液相色谱-三重四极杆串联质谱(UPLC-MS/MS)
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| GB/T 7714 | 王巧霞 , 孙润之 , 叶洪 et al. 基质分散固相萃取-超高效液相色谱串联质谱法同时测定茶叶中17种卡西酮类物质 [J]. | 分析试验室 , 2024 , 43 (11) : 1620-1625 . |
| MLA | 王巧霞 et al. "基质分散固相萃取-超高效液相色谱串联质谱法同时测定茶叶中17种卡西酮类物质" . | 分析试验室 43 . 11 (2024) : 1620-1625 . |
| APA | 王巧霞 , 孙润之 , 叶洪 , 唐庆强 , 傅红 , 陈燕雯 et al. 基质分散固相萃取-超高效液相色谱串联质谱法同时测定茶叶中17种卡西酮类物质 . | 分析试验室 , 2024 , 43 (11) , 1620-1625 . |
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食品中的有机酸等内源性物质会干扰其中痕量残留物的检测，为消除此影响，以N-β-（氨乙基）-γ-氨丙基三甲氧基硅烷（KH792）为氨基化试剂，直接修饰酸化后的Fe
Keyword ：
N-β-（氨乙基）-γ-氨丙基三甲氧基硅烷 N-β-（氨乙基）-γ-氨丙基三甲氧基硅烷 酸化Fe 酸化Fe
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| GB/T 7714 | 周书威 , 傅红 , 杨方 . 伯仲胺基团修饰Fe [J]. | 复合材料学报 , 2024 , 41 (04) : 1977-1986 . |
| MLA | 周书威 et al. "伯仲胺基团修饰Fe" . | 复合材料学报 41 . 04 (2024) : 1977-1986 . |
| APA | 周书威 , 傅红 , 杨方 . 伯仲胺基团修饰Fe . | 复合材料学报 , 2024 , 41 (04) , 1977-1986 . |
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食品中的有机酸等内源性物质会干扰其中痕量残留物的检测,为消除此影响,以N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷(KH792)为氨基化试剂,直接修饰酸化后的Fe3O4 得到磁性吸附材料.经响应面试验优化得到KH792对酸化Fe3O4 的最佳修饰条件为温度 82.5℃、pH=4.9,KH792添加量 1.8 mL,在最佳条件下,KH792直接修饰的酸化Fe3O4 对没食子酸吸附量为 22.8 mg/g,比市售Fe3O4 提高了 188%,且具备快速固液分离的能力、良好的稳定性及分散性.通过BET、Zeta电位、FTIR和XPS对直接修饰的产物性能进行了表征,结果表明,KH792与Fe3O4 表面羟基通过Fe-O-Si键结合,酸化提高了Fe3O4 表面羟基含量,因此也增强了KH792对Fe3O4 的修饰效果,本文制备的磁性产物可用于净化复杂样品基质中的有机酸.
Keyword ：
N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷 N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷 修饰机制 修饰机制 直接修饰法 直接修饰法 磁性吸附材料 磁性吸附材料 酸化Fe3O4 酸化Fe3O4
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| GB/T 7714 | 周书威 , 傅红 , 杨方 . 伯仲胺基团修饰Fe3O4磁性材料的制备和性能表征 [J]. | 复合材料学报 , 2024 , 41 (4) : 1977-1986 . |
| MLA | 周书威 et al. "伯仲胺基团修饰Fe3O4磁性材料的制备和性能表征" . | 复合材料学报 41 . 4 (2024) : 1977-1986 . |
| APA | 周书威 , 傅红 , 杨方 . 伯仲胺基团修饰Fe3O4磁性材料的制备和性能表征 . | 复合材料学报 , 2024 , 41 (4) , 1977-1986 . |
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Abstract ：
The issue of pesticide residues in food is of great concern．The extraction and purification of food matrices by sample pretreatment techniques are necessary for the complex matrixes of food products containing many types of pesticides and very small amounts．In the sample pretreatment pro⁃ cess， sorbent materials play an important role． In recent years，magnetic carbon materials （mCBMs） have received much attention in the field of pesticide residue analysis in food due to their good purification effect，rapid separation and easy recovery．In this paper，the preparation of mag⁃ netic graphene，magnetic carbon nanotubes，magnetic graphitized carbon black and their modifica⁃ tion with functional groups， polymer and functional materials are introduced． The application and the problems and future prospects of mCBMs in the detection of pesticide residues in food are out⁃ lined．It is anticipated to provide a reference for expanding the application of mCBMs in the detection of pesticide residues. © 2023, China Association for Instrumental Analysis. All rights reserved.
Keyword ：
detection and analysis detection and analysis food food magnetic carbon materials magnetic carbon materials modified modified pesticide residues pesticide residues preparation preparation
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| GB/T 7714 | Zhou, S.-W. , Fu, H. , Yang, F. . Preparation of Magnetic Carbon Materials and Their Application in the Detection of Pesticide Residues in Food [J]. | Journal of Instrumental Analysis , 2023 , 42 (2) : 241-250 . |
| MLA | Zhou, S.-W. et al. "Preparation of Magnetic Carbon Materials and Their Application in the Detection of Pesticide Residues in Food" . | Journal of Instrumental Analysis 42 . 2 (2023) : 241-250 . |
| APA | Zhou, S.-W. , Fu, H. , Yang, F. . Preparation of Magnetic Carbon Materials and Their Application in the Detection of Pesticide Residues in Food . | Journal of Instrumental Analysis , 2023 , 42 (2) , 241-250 . |
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食品中的农药残留问题备受关注,然而食品基质复杂、农药种类多且含量甚微,通过样品前处理技术对食品基质进行提取与净化非常必要.在样品前处理过程中,吸附剂材料发挥着重要作用.近年来,磁性碳材料(mCBMs)因净化效果好、分离速度快、易回收等优势,在食品中农药残留分析领域受到广泛关注.该文介绍了磁性石墨烯、磁性碳纳米管、磁性石墨化碳黑的制备及其功能化方法——进行官能团、高分子聚合物和功能材料的修饰,简要概述了mCBMs在食品农残检测中的应用、存在的问题与未来发展的方向,以期为拓展mCBMs在农残检测中的应用提供参考.
Keyword ：
修饰 修饰 农药残留 农药残留 制备 制备 检测分析 检测分析 磁性碳材料 磁性碳材料 食品 食品
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| GB/T 7714 | 周书威 , 傅红 , 杨方 . 磁性碳材料的制备及其在食品农药残留检测中的应用 [J]. | 分析测试学报 , 2023 , 42 (2) : 241-250 . |
| MLA | 周书威 et al. "磁性碳材料的制备及其在食品农药残留检测中的应用" . | 分析测试学报 42 . 2 (2023) : 241-250 . |
| APA | 周书威 , 傅红 , 杨方 . 磁性碳材料的制备及其在食品农药残留检测中的应用 . | 分析测试学报 , 2023 , 42 (2) , 241-250 . |
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The separation of glyceride fish oil high in omega-3 polyunsaturated fatty acid (ω-3 PUFA) produced by multistage enzymatic transesterification was studied by multistep molecular distillation. Firstly, glycerides and by-products in the transesterification products were separated by primary molecular distillation. When the distillation pressure was 5 Pa, the distillation temperature was 140 ℃, the scraper speed was 240 r/min, and the feeding rate was 0.2 mL/min, the yield of the first-stage heavy phase was 47.13% and the content of ω-3 PUFA in it was 53.76%. Meanwhile, high-temperature gas chromatography (HTGC) and nuclear magnetic resonance hydrogen (1H-NMR) spectroscopy consistently showed that the heavy phase did not contain fish oil ethyl ester. Secondly, the ω-3 PUFA content of the light phase increased from 60.73% to 78.01% by molecular distillation at a distillation pressure of 5 Pa, a distillation temperature of 110 ℃, a scraper speed of 240 r/min, and a condensation temperature of 20 ℃. After conducting secondary enzymatic transesterification reaction and molecular distillation separation on the enriched first-stage light phase, the yield of the second-stage heavy phase was 78.01% and its ω-3 PUFA content was 51.38%. When the enrichment step was omitted, the content of ω-3 PUFA in the second-stage heavy phase was only 42.37%. Multistep molecular distillation combined with multistage enzymatic transesterification can be used to prepare glyceride-type fish oil products with different ω-3 PUFA contents, with maximal utilization of raw materials and by-products. © 2023 Chinese Chamber of Commerce. All rights reserved.
Keyword ：
Distillation Distillation Fish Fish Gas chromatography Gas chromatography Nuclear magnetic resonance Nuclear magnetic resonance Nuclear magnetic resonance spectroscopy Nuclear magnetic resonance spectroscopy Polyunsaturated fatty acids Polyunsaturated fatty acids Transesterification Transesterification
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| GB/T 7714 | Shen, Linjie , Lin, Rongfa , Zhang, Lianyue et al. Multistep Molecular Distillation for the Preparation of Glyceride-Type Fish Oil High in Omega-3 Polyunsaturated Fatty Acid by Enzymatic Transesterification [J]. | Food Science , 2023 , 44 (20) : 79-86 . |
| MLA | Shen, Linjie et al. "Multistep Molecular Distillation for the Preparation of Glyceride-Type Fish Oil High in Omega-3 Polyunsaturated Fatty Acid by Enzymatic Transesterification" . | Food Science 44 . 20 (2023) : 79-86 . |
| APA | Shen, Linjie , Lin, Rongfa , Zhang, Lianyue , Feng, Chuanzhi , Fu, Hong . Multistep Molecular Distillation for the Preparation of Glyceride-Type Fish Oil High in Omega-3 Polyunsaturated Fatty Acid by Enzymatic Transesterification . | Food Science , 2023 , 44 (20) , 79-86 . |
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采用超高效液相色谱-串联质谱技术建立同时测定茶叶样品中游离型、游离酯型、结合型、可溶性糖苷型及不溶性糖苷型等不同形态酚酸的分析方法.以70％甲醇溶液直接提取样品中的游离型酚酸,该提取液分别以2 mol/LNaOH溶液(含1 g/100 mL抗坏血酸和10 mmol/L乙二胺四乙酸)和1 mol/L HC1溶液水解以释放游离酯型与可溶性糖苷型酚酸;提取后的样品残渣分别以碱水解、酸水解方式释放结合型与不溶性糖苷型酚酸.23种酚酸类化合物在50～1 000 μg/L范围内呈良好线性关系,相关系数(r)均高于0.996,相对标准偏差小于8.84％;茶叶样品中游离型酚酸的回收率为71.14％～105.43％,游离酯型酚酸和可溶性糖苷型酚酸的回收率分别为82.81％～108.93％、39.09％～102.25％.在茶叶中鉴定出14种酚酸类化合物,总含量范围为7.84～12.90 mg/g.
Keyword ：
茶叶 茶叶 超高效液相色谱-串联质谱 超高效液相色谱-串联质谱 酚酸类化合物 酚酸类化合物
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| GB/T 7714 | 刘碧琴 , 傅红 , 杨方 et al. 超高效液相色谱,质谱联用分析茶叶中酚酸类化合物的组成及分布 [J]. | 食品科学 , 2022 , 43 (22) : 249-258 . |
| MLA | 刘碧琴 et al. "超高效液相色谱,质谱联用分析茶叶中酚酸类化合物的组成及分布" . | 食品科学 43 . 22 (2022) : 249-258 . |
| APA | 刘碧琴 , 傅红 , 杨方 , 刘少明 , 高晨生 , 陈珊 . 超高效液相色谱,质谱联用分析茶叶中酚酸类化合物的组成及分布 . | 食品科学 , 2022 , 43 (22) , 249-258 . |
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An analytical method for simultaneous determination of phenolic acid compounds (free phenolic acids, free phenolic acid esters, bound phenolic acids, soluble phenolic acid glycosides and insoluble phenolic acid glycosides) in tea samples was established by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).The free phenolic acids in samples were extracted with 70% methanol, and the extract was hydrolyzed with 2 mol/L NaOH solution (containing 1 g/100 mL ascorbic acid and 10 mmol/L EDTA) and 1 mol/L HCl solution, separately, to release free phenolic acid esters and soluble phenolic acid glycosides, respectively. The reside after extraction was hydrolyzed by alkali and acid, separately, to release bound phenolic acid and insoluble phenolic acid glycosides. The calibration curves for the 23 phenolic acid compounds showed good linearity in the range of 50-1 000 μg/L, with correlation coefficients (r) higher than 0.996, and the relative standard deviation was less than 8.84%. The recoveries of free phenolic acids in tea samples were 71.14%-105.43%, and the recoveries of free phenolic acid esters and soluble phenolic acid glycosides were 82.81%-108.93% and 39.09%-102.25%, respectively. Fourteen phenolic acid compounds were identified in tea, with a total content ranging from 7.84 to 12.90 mg/g. © 2022, China Food Publishing Company. All right reserved.
Keyword ：
Ascorbic acid Ascorbic acid Beverages Beverages Chlorine compounds Chlorine compounds Esters Esters Extraction Extraction High performance liquid chromatography High performance liquid chromatography Hydrolysis Hydrolysis Mass spectrometry Mass spectrometry Sodium hydroxide Sodium hydroxide Sugars Sugars
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| GB/T 7714 | Liu, Biqin , Fu, Hong , Yang, Fang et al. Analysis of the Composition and Distribution of Phenolic Acid Compounds in Tea by Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry [J]. | Food Science , 2022 , 43 (22) : 249-258 . |
| MLA | Liu, Biqin et al. "Analysis of the Composition and Distribution of Phenolic Acid Compounds in Tea by Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry" . | Food Science 43 . 22 (2022) : 249-258 . |
| APA | Liu, Biqin , Fu, Hong , Yang, Fang , Liu, Shaoming , Gao, Chensheng , Chen, Shan . Analysis of the Composition and Distribution of Phenolic Acid Compounds in Tea by Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry . | Food Science , 2022 , 43 (22) , 249-258 . |
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