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学者姓名：傅红
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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 ：
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 et al. "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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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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Abstract ：
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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研究植物甾醇凝胶剂(β-谷甾醇与γ-谷维素质量比2∶3)对大豆油凝胶网络结构及氧化特性的影响。结果表明,在植物甾醇凝胶剂添加量为2%～10%(质量分数)时,6%及以上的凝胶化大豆油的G′始终大于G″,说明体系已形成稳定的类固体凝胶结构。偏振光显微镜显示,6%凝胶化大豆油在45℃贮藏10 d时,呈现规则且紧密的聚集态,其过氧化值为15.59mmol/kg,丙二醛含量为1.49 mg/kg,顶空耗氧量为24.19%,氧化稳定性最好。分别添加2%～10%的β-谷甾醇或γ-谷维素,顶空耗氧量显示β-谷甾醇起到抗氧化的作用,γ-谷维素起到促氧化作用。180℃下加热2.5 h,6%植物甾醇凝胶化油脂的顶空...
Keyword ：
凝胶化油脂 凝胶化油脂 凝胶结构 凝胶结构 植物甾醇 植物甾醇 热氧化 热氧化
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| GB/T 7714 | 林荣发 , 钟晓芳 , 戴美娜 et al. 植物甾醇对其凝胶化大豆油结构稳定性和热氧化特性的影响 [J]. | 中国食品学报 , 2022 , 22 (01) : 155-162 . |
| MLA | 林荣发 et al. "植物甾醇对其凝胶化大豆油结构稳定性和热氧化特性的影响" . | 中国食品学报 22 . 01 (2022) : 155-162 . |
| APA | 林荣发 , 钟晓芳 , 戴美娜 , 刘祖文 , 马穆彪 , 江洲 et al. 植物甾醇对其凝胶化大豆油结构稳定性和热氧化特性的影响 . | 中国食品学报 , 2022 , 22 (01) , 155-162 . |
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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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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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基于晶体生长法制备了一种均匀稳定的四氧化三铁负载石墨化碳黑磁性纳米材料(GCB/Fe3 O4),通过扫描电镜、傅里叶变换红外光谱仪、X射线衍射仪和振动磁强计对GCB/Fe3 O4的表面形貌、晶体结构、磁学性能进行了分析,并以儿茶素、姜黄素、槲皮素、叶绿素铜钠和β-胡萝卜素为对象,研究了GCB/Fe3 O4对色素、多酚等干扰物质的吸附性能.结果显示,所制备的磁性纳米材料GCB/Fe3 O4保留了GCB原有的吸附特性并具备磁性,对儿茶素、姜黄素、槲皮素、叶绿素铜钠和β-胡萝卜素的饱和吸附量分别为7.87、9.19、5.65、3.35和6.13 mg/g,较GCB的饱和吸附量分别提高了187.2％、28.9％、55.2％、52.3％和4.6％.以GCB/Fe3 O4为磁性吸附剂,用于茶叶中405种农药残留检测的净化,相比现行的固相萃取法或QuEChERs法,操作更简便快速,净化时间至少可节约15％;茶叶中393种农药残留的回收率为60％ ～120％,相对标准偏差为2.6％ ～14.6％.实验结果表明,GCB/Fe3 O4具备良好的吸附性能,且稳定性好,可用于茶叶中多种农药残留检测的样品前处理过程.
Keyword ：
农药残留 农药残留 晶体生长法 晶体生长法 磁性石墨化碳黑 磁性石墨化碳黑 茶叶 茶叶
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| GB/T 7714 | 周书威 , 傅红 , 薛晓康 et al. 基于晶体生长法的磁性石墨化碳黑的制备及在茶叶农药残留检测中的应用 [J]. | 分析化学 , 2022 , 50 (3) : 472-481 . |
| MLA | 周书威 et al. "基于晶体生长法的磁性石墨化碳黑的制备及在茶叶农药残留检测中的应用" . | 分析化学 50 . 3 (2022) : 472-481 . |
| APA | 周书威 , 傅红 , 薛晓康 , 柯秋璇 , 常巧英 , 杨方 . 基于晶体生长法的磁性石墨化碳黑的制备及在茶叶农药残留检测中的应用 . | 分析化学 , 2022 , 50 (3) , 472-481 . |
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制备12-羟基硬脂酸(12-hydroxystearic acid,12-HSA)凝胶化大豆油脂,在探讨12-HSA凝胶剂对大豆油脂氧化指标的影响及比较官能团对油脂氧化作用的基础上,通过室温及热加工时凝胶状态的不同研究12-HSA及热加工对凝胶化大豆油脂氧化的影响机理,并利用核磁共振氢谱法进行热氧化分析。结果表明:12-HSA凝胶剂与碱性滴定液反应使酸价测定值升高,油脂游离脂肪酸所反映的真实酸价应为凝胶化油脂的实测酸价减去因12-HSA消耗KOH所产生的酸价;12-HSA有促氧化作用,相同条件下顶空耗氧量从大到小依次为硬脂酸>硬脂醇>12-HSA>十八烷,提示羟基与羧基单独作用下的促氧化作用要...
Keyword ：
12-羟基硬脂酸 12-羟基硬脂酸 凝胶化油脂 凝胶化油脂 凝胶结构 凝胶结构 官能团 官能团 核磁共振氢谱法 核磁共振氢谱法 热氧化 热氧化
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| GB/T 7714 | 罗晶 , 颜梦婷 , 李培旭 et al. 有机凝胶剂12-羟基硬脂酸及热加工对凝胶化大豆油氧化的影响 [J]. | 食品科学 , 2021 , 42 (11) : 40-46 . |
| MLA | 罗晶 et al. "有机凝胶剂12-羟基硬脂酸及热加工对凝胶化大豆油氧化的影响" . | 食品科学 42 . 11 (2021) : 40-46 . |
| APA | 罗晶 , 颜梦婷 , 李培旭 , 张翠平 , 傅红 . 有机凝胶剂12-羟基硬脂酸及热加工对凝胶化大豆油氧化的影响 . | 食品科学 , 2021 , 42 (11) , 40-46 . |
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基于物理共混法制备了一种均匀的四氧化三铁负载石墨化碳黑磁性纳米材料(GCB/Fe3O4).以此为固相萃取吸附剂,建立了酚钙共沉淀-磁性固相萃取-气相色谱/三重四极杆串联质谱技术(GC-MS/MS)同时测定茶叶中405种农药残留的分析方法.对GCB/Fe3O4的晶体结构、表面形貌以及吸附色素的能力进行了探讨.结果 表明,所制备的材料均匀,对儿茶素、姜黄素及叶绿素铜钠的饱和吸附量分别为8.89、9.38和3.68 mg/g.与GCB相比,提高了姜黄素和叶绿素铜钠5％ ～ 87％的吸附量,且能够吸附GCB所无法吸附的儿茶素.采用该材料对茶叶中405种农药残留检测进行净化前处理,平均回收率为48.2％ ～ 123.6％,相对标准偏差为0.4％～14.5％,其中377种农药的回收率在70％～120％,占比93.1％.结果 表明,该材料具有良好的净化效果,适用于多种农药回收率的检测,有较高的应用推广价值.
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| GB/T 7714 | 薛晓康 , 傅红 , 陈丽娟 et al. 四氧化三铁负载石墨化碳黑磁性纳米材料的制备及其在茶叶中多种农药残留检测中的应用 [J]. | 应用化学 , 2021 , 38 (8) : 995-1006 . |
| MLA | 薛晓康 et al. "四氧化三铁负载石墨化碳黑磁性纳米材料的制备及其在茶叶中多种农药残留检测中的应用" . | 应用化学 38 . 8 (2021) : 995-1006 . |
| APA | 薛晓康 , 傅红 , 陈丽娟 , 李捷 , 杨方 . 四氧化三铁负载石墨化碳黑磁性纳米材料的制备及其在茶叶中多种农药残留检测中的应用 . | 应用化学 , 2021 , 38 (8) , 995-1006 . |
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