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| 1 | 拉曼光谱技术在肉类掺假检测方面的应用研究进展显示文摘随着人们对高品质肉要求的提高,对快速、可靠的肉类掺假鉴别需求也不断增加。拉曼光谱技术是基于非弹性散射原理建立起来的分子结构表征技术,该技术能检测出官能团分子的化学结构,经过几十年的发展已广泛应用于食品检测,具有快速、无损、无污染、简单、可重复等优点,在肉品掺假检测方面取得了较好研究结果,应用潜力巨大。本文对近年来拉曼光谱技术在肉类掺假检测方面的研究进展和最新研究成果进行综述,并讨论其存在的问题及发展前景。 | 韩爱云 张振冉 解立斌 史君坡 剧慧栋 左晓磊 | 2021 | 肉类研究2021，35，7： | 6 |
| 2 | Surface-enhanced Raman scattering for mixing state characterization of individual fine particles during a haze episode in Beijing,China显示文摘The nondestructive characterization of the mixing state of individual fine particles using the traditional single particle analysis technique remains a challenge.In this study,fine particles were collected during haze events under different pollution levels from September 5 to 112017 in Beijing,China.A nondestructive surface-enhanced Raman scattering(SERS)technique was employed to investigate the morphology,chemical composition,and mixing state of the multiple components in the individual fine particles.Optical image and SERS spectral analysis results show that soot existing in the form of opaque material was predominant during clear periods(PM_(2.5)≤75μg/m^(3)).During polluted periods(PM_(2.5)>75μg/m^(3)),opaque particles mixed with transparent particles(nitrates and sulfates)were generally observed.Direct classical least squares analysis further identified the relative abundances of the three major components of the single particles:soot(69.18%),nitrates(28.71%),and sulfates(2.11%).A negative correlation was observed between the abundance of soot and the mass concentration of PM_(2.5).Furthermore,mapping analysis revealed that on hazy days,PM_(2.5)existed as a core-shell structure with soot surrounded by nitrates and sulfates.This mixing state analysis method for individual PM_(2.5)particles provides information regarding chemical composition and haze formation mechanisms,and has the potential to facilitate the formulation of haze prevention and control policies. | Hui Chen Fengkui Duan Jingjing Du Ranhao Yin Lidan Zhu Jinlu Dong Kebin He Zhenli Sun Suhua Wang | 2021 | Journal of Environmental Sciences2021，33，6： | 2 |
| 3 | 气溶胶单颗粒的拉曼测量方法显示文摘近年来随着工业迅速的发展,大气中气溶胶含量逐渐增加,导致雾霾天气频发,大气环境污染日益严峻。气溶胶污染问题主要与其物理化学性质有关,包括气溶胶的吸湿性、挥发性、酸性、相态和非平衡动力学等。文中综合论述了大气气溶胶单颗粒的拉曼测量,包括研究气溶胶的吸湿性、相变、pH和反应摄取系数,运用光镊-受激拉曼光谱技术测量气溶胶的挥发性、非平衡动力学和相变,以及运用表面增强拉曼光谱技术测量气溶胶的化学组成等。 | 常翩翩 张韫宏 | 2020 | 光散射学报2020，32，4： | 1 |
| 4 | Au nanoring arrays as surface enhanced Raman spectroscopy substrate for chemical component study of individual atmospheric aerosol particle显示文摘Monolayer-ordered gold nanoring arrays were prepared by ion-sputtering method and used as surface enhanced Raman spectroscopy(SERS)substrates to test the individual atmospheric aerosols particle.Compared to other methods used for testing atmospheric aerosols particles,the collection and subsequent detection in our work is performed directly on the gold nanoring SERS substrate without any treatment of the analyte.The SERS performance can be tuned by changing the depth of the gold nanoring cavity as originating from coupling of dipolar modes at the inner and outer surfaces of the nanorings.The electric field exhibits uniform enhancement and polarization in the ordered Au nanoring substrate,which can improve the accuracy for detecting atmospheric aerosol particles.Combined with Raman mapping,the information about chemical composition of individual atmospheric aerosols particle and distribution of specific components can be presented visually.The results show the potential of SERS in enabling improved analysis of aerosol particle chemical composition,mixing state,and other related physicochemical properties. | Hanyun Cheng Xu Dong Yang Yang Yiqing Feng Tao Wang Muhammad Ali Tahir Liwu Zhang Hongbo Fu | 2021 | Journal of Environmental Sciences2021，33，2： | 1 |
| 5 | 表面增强拉曼光谱法快速检测咸鸭蛋中苏丹红显示文摘建立分子印迹固相萃取与表面增强拉曼光谱联用快速检测咸鸭蛋中苏丹红Ⅰ~Ⅳ的方法。用正己烷进行样品提取,提取液由苏丹红净化管与分子印迹固相萃取柱进行净化,洗脱液经氮吹至近干后用1 mL乙腈复溶,滴加金纳米溶胶增强基底后采用拉曼光谱仪进行检测,利用WiRE 5.0进行光谱收集和光谱预处理。结果表明,根据苏丹红Ⅰ~Ⅳ的骨架特征峰建立苏丹红Ⅰ~Ⅳ的表面增强拉曼光谱定性检测方法,苏丹红Ⅰ~Ⅳ的最低检出浓度分别为1, 1, 0.5和0.5 mg/kg,苏丹红Ⅰ回收率82.4%~98.5%、精密度1.3%~3.7%,苏丹红Ⅱ回收率82.3%~97.3%、精密度3.4%~5.5%,苏丹红Ⅲ回收率83.8%~97.3%、精密度4.5%~6.5%,苏丹红Ⅳ回收率82.9%~95.6%、精密度3.0%~6.1%。利用该方法定性检测阴性实际样品及阳性模拟样品,阴性样品结果为阴性,模拟阳性样品结果为阳性。试验方法可用于苏丹红Ⅰ~Ⅳ的快速、准确检测,为咸鸭蛋的现场定性检测苏丹红Ⅰ~Ⅳ提供技术支撑。 | 胡家勇 彭青枝 周陶鸿 林津 刘国娇 | 2023 | 食品工业2023，44，9： | 0 |
| 6 | Constructing a Raman and surface-enhanced Raman scattering spectral reference library for fine-particle analysis显示文摘Fine particles associated with haze pollution threaten the health of over 400 million people in China. Owing to excellent non-destructive fingerprint recognition characteristics, Raman and surface-enhanced Raman scattering(SERS) are often used to analyze the composition of fine particles to determine their physical and chemical properties as well as reaction mechanisms. However, there is no comprehensive Raman spectral library of fine particles. Furthermore, various studies that used SERS for fine-particle composition analysis showed that the uniqueness of the SERS substrates and different excitation wavelengths can produce a different spectrum for the same fine-particle component. To overcome this limitation, we conducted SERS experiments with a portable Raman spectrometer using two common SERS substrates(silver(Ag) foil and gold nanoparticles(Au NPs)) and a 785 nm laser. Herein, we introduced three main particle component types(sulfate-nitrate-ammonium(SNA), organic material, and soot) with a total of 39 chemical substances. We scanned the solid Raman, liquid Raman, and SERS spectra of these substances and constructed a fine-particle reference library containing 105 spectra. Spectral results indicated that for soot and SNA, the differences in characteristic peaks mainly originated from the solid-liquid phase transition;Ag foil had little effect on this difference, while the Au NPs caused a significant red shift in the peak positions of polycyclic aromatic hydrocarbons. Moreover, with various characteristic peak positions in the three types of spectra, we could quickly and correctly distinguish substances. We hope that this spectral library will aid in the future identification of fine particles. | Hui Chen Fengkui Duan Kebin He Jingjing Du Zhenli Sun Suhua Wang | 2022 | Journal of Environmental Sciences2022，34，8： | 0 |
| 7 | 高压脉冲电场技术在实验教学中的应用显示文摘将高压脉冲电场萃取技术应用到食品科学专业课'功能性食品'实验教学中,采用福林酚法测定蓝莓中多酚含量,并结合响应面分析法优选多酚类化合物的最佳提取工艺,确定工艺条件为料液比35∶1、乙醇浓度70%、p H值2. 7、电场场强40 k V/cm、脉冲数6,所得总酚得率为36. 4%。该方法在室温下进行,绿色环保,能有效保护功能成分的活性,且操作简便、有机溶剂使用量少。将该实验用于本科实验教学中,增加了教学实验的开放性、综合性和研究性,有利于开拓学生创新性思维、提高分析解决问题的能力以及提升环保意识。 | 张燕 赵颂宁 赫桂丹 刘博群 刘静波 | 2019 | 实验室研究与探索2019，38，10： | 0 |
| 8 | 拉曼光谱在细颗粒物分析领域的应用显示文摘近年来,作为一项无损的指纹识别技术,拉曼光谱在细颗粒物分析领域表现出巨大的应用潜力.本文对拉曼光谱在细颗粒物定性分析、定量分析、图像化表征、混合态分析、源解析、pH分析和非均相反应七个方面的研究进展进行了综述.对于传统拉曼光谱存在信号强度不高的问题,通过表面增强拉曼散射(SERS)、尖端增强拉曼散射(TERS)和受激拉曼散射(SRS)技术得到了改进.最后对今后拉曼光谱在细颗粒物分析领域可能的研究方向进行了展望. | 陈慧 段凤魁 王宁 杜晶晶 孙振丽 | 2022 | 环境化学2022，41，11： | 0 |
| 9 | 保健食品中西地那非等PDE-5i检测方法研究进展显示文摘5型磷酸二酯酶(PDE-5)是生物体内专一水解细胞内环磷酸鸟苷(cGMP)的关键因子,具有调节血管张力、传导视觉信号、调控能量代谢等作用。5型磷酸二酯酶抑制剂(PDE-5i)作为选择性抑制磷酸二酯酶活性的一类药物,可用于改善勃起功能障碍、治疗肺动脉高压等疾病,在临床上广泛应用。一些不法商家向保健食品中非法添加PDE-5i及其类似物以达到其声称的保健效果,严重危害消费者健康。本文综述了保健食品中非法添加PDE-5i及其类似物的常用检测方法,包括理化快速筛查法、酶联免疫法、胶体金免疫层析法、近红外光谱法、拉曼光谱法、离子迁移谱法、薄层色谱及其联用法、液相色谱法、液相色谱-质谱联用法等,并介绍了各个方法的特点,为市场监管部门和公安机关打击食品药品违法犯罪行为提供技术支撑。 | 李少元 接强 栾玉静 董颖 崔冠峰 黄健 孙晓宇 王芳琳 | 2023 | 刑事技术2023，48，3： | 0 |
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