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Chemical Research in Chinese Universities 2008年第2期24卷 143-147页

作者： Sajid H. Guzar jin qin-han Institute of Miniature Analytical Instrumentation College of Chemistry Jilin University Changchun 130021 P. R. China Research Center of Instrumentation Zhejiang University Hangzhou 310058 P. R. China

A selective and sensitive reagent of 2-pyridine carboxaldehyde isonicotinyl hydrazone（2-PYAINH） was synthesized and studied for the spectrophotometric determination of nickel, copper, cobalt, and iron in detail. At a pH value of 7.0, 9,0, 9.0, and 8.0, respectively, which greatly increased the selectivity; nickel, copper, cobalt, and iron reacted with 2-PYAINH to form a 1：2 yellow-orange, 1：2 yellow-green, 1：2 yellow and 1：1 yellow complexes, with absorption peaks at 363, 352, 346, and 359 nm, respectively. Under the optimal conditions, Beer＇s law was obeyed over the ranges of 0.01-1.4, 0.01-1.5, 0.01-2.7, and 0.01-5.4 mg/L respectively. The apparent molar absorptivity and Sandell＇s sensitivities were 8.4×10^4, 5.2×10^4, 7.1×10^4, and 3.9×10^4 L·mol^-l·cm^-1, respectively, and 0.00069, 0.0012, 0.00078, and 0.0014 μg·cm2, respectively. The detection limits were found to be 0.001, 0.002, 0.003, and 0.01 mg/L, respectively. The detailed study of various interfering ions to make the method more sensitive was carried out and selective and several real samples were analyzed with satisfactory results.

关键词： Copper(Ⅱ) Nickel(Ⅱ) Cobalt(Ⅱ) Iron(Ⅲ) 2-Pyridine carboxaldehyde isonicotinyl hydrazone(2-PYAINH) Spectrophotometry

Immunosensor Based on Surface Plasmon Resonance for Antigen Recognition

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Chemical Research in Chinese Universities 2008年第1期24卷 24-28页

作者： jin Wei MU Ying ZOU Xiang-yu jin qin-han Research Center for Analytical Instrumentation College of Information Science and Engineering Zhejiang University Hangzhou 310058 P. R. China College of Instrumentation and Electrical Engineering Jilin University Changchun 130021 P. R. China College of Chemistry Jilin University Changchun 130021 P. R. China

A novel immunosensor based on surface plasmon resonance（SPR） has been developed for the recognition of antigen. The sensor was designed on the basis of the fixed angle of incidence and measuring the reflected intensities in a wavelength range of 430--750 nm in real-time. An ultra-bright white light-emitting diode（LED） was used as the light source. Molecular self-assembling in solution was used to form the sensing membrane on gold substrate. It has been seen that the sensitivity of the SPR sensor with 3-mercaptopropionic acid（MPA）/protein A（SPA） sensing membrane is considerably higher than that with MPA or SPA modified sensing membrane. The kinetic processes on the sensing membrane were studied. The human B factor（Bf）, an activator of complement 3（C3）, was recognized among the other antigens. This sensor can also be used for other antigen/antibody or adaptor/receptor recognition. Under optimized experimental conditions, the sensor has good selectivity, repeatability, and reversibility.

关键词： Surface plasmon resonance Immunosensor Molecular recognition

On Line Anion Exchange Preconcentration in Microwave Plasma Torch Atomic Emission Spectrometry

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Chemical Research in Chinese Universities 1994年第1期10卷 43-44页

作者： Liang, Feng Zhang, han-qi jin, qin-han

ＯｎＬｉｎｅＡｎｉｏｎＥｘｃｈａｎｇｅＰｒｅｃｏｎｃｅｎｔｒａｔｉｏｎｉｎＭｉｃｒｏｗａｖｅＰｌａｓｍａＴｏｒｃｈＡｔｏｍｉｃＥｍｉｓｓｉｏｎＳｐｅｃｔｒｏｍｅｔｒｙＬＩＡＮＧＦｅｎｇ；ＺＨＡＮＧＨａｎ－ｑｉａｎｄＪ... 详细信息

ＯｎＬｉｎｅＡｎｉｏｎＥｘｃｈａｎｇｅＰｒｅｃｏｎｃｅｎｔｒａｔｉｏｎｉｎＭｉｃｒｏｗａｖｅＰｌａｓｍａＴｏｒｃｈＡｔｏｍｉｃＥｍｉｓｓｉｏｎＳｐｅｃｔｒｏｍｅｔｒｙＬＩＡＮＧＦｅｎｇ；ＺＨＡＮＧＨａｎ－ｑｉａｎｄＪＩＮＱｉｎ－ｈａｎ（Ｄｅｐａｒｔｍ...

关键词： Microwave plasma torch Atomic emission spectrometry Preconcen-tration

Studies on Excitation and Rotational Temperatures of an Oxygen-shielded Argon Microwave Plasma Torch Source

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Chemical Research in Chinese Universities 2006年第5期22卷 560-565页

作者： WANG Shu-hua LI Guo-zhen ZHOU Jian-guang jin qin-han Institute of Miniature Analytical Instrumentation College of Chemistry Jilin University Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments Changchun 130021 P. R. China Department of Physics Bohai University Jinzhou 121000 P. R. China

Excitation（ Texc ） and rotation（ Trot ） temperatures were determined under different conditions for an oxygen-shielded argon microwave plasmsa torch source（OS-Ar-MPT）. The Texc value, which was shown to be between 4300 and 5250 K under different operating conditions, was calculated from the slope of the Boltzmann plot with Fe as the thermometric species. The Trot value, which was in the range of 2100-2500 K, was measured with OH molecular spectra. The influences of microwave power, flow rates of the support gas, cartier gas, and shielding gas, as well as the observation height on Texc and Trot were investigated and discussed. The detailed results of Texc and Trot provided a better understanding of the performance of an OS-ArMPT as a source for atomic emission spectrometry.

关键词： Microwave plasma torch (MPT) Excitation temperature Rotational temperature

Detection of Serine Octamer by Desorption Electrospray Ionization Mass Spectrometry in Resultant Mixture of Aspartic Acid Exposed to Sunshine Under Natural Conditions

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Chemical Research in Chinese Universities 2007年第6期23卷 650-653页

作者： CHEN Huan-wen LI Ming jin Wei jin qin-han ZHENG Jian College of Chemistry Jilin Province Research Center of Engineering and Technology for Spectral Instruments Jilin University Changchun 130021 P. R. China Applied Chemistry Department East China University of Technology Fuzhou 344000 P. R. China College of Information Science and Engineering Zhejiang University Hangzhou 310027 P. R. China Beijing Physical and Chemical Analysis Center Beijing 100089 P. R. China

Serine, one of the nonessential amino acids, is of principal interest because of its capability to form magic-number ionic clusters, which provide a remarkable preference for homochirality. With L-aspartic acid as the precursor, this study provides experimental evidence for serine formation in weak acidified aqueous solutions in the presence of iron, with exposure to sunlight, which simulates the natural conditions of the prebiotic aqueous environment. The resultant mixture is directly analyzed via desorption electrospray ionization mass spectrometry（ DESI-MS）, without any sample preseparation. The serine monomer is successfully detected as protonated molecules, giving a peak at m/z 106, which is confirmed by the MS/MS fragments. Protonated serine octamer（ m/z 841 ） is also observed with significant abundance in the MS spectra and is confirmed by the MS/MS data, which shows the formation of the serine octamer by a synthesized serine in the resultant mixture. It is also found that the serine octamer yielded equivalent abundance in the DESI mass spectra in a wide pH range（pH = 1-5 ）, and that existence of ferrous salt and sunshine are essential for the conversion of aspartic acid to serine in the acidic water solution.

关键词： Serine octamer Aspartic acid Photocatalysis DESI Mass spectrometry

Determination of Cd,Pb and Sr by Microwave Plasma Torch Atomic Emision Spectrometry Using an Electrothermal Vaporization Sample Introduction System

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Chemical Research in Chinese Universities 1998年第4期14卷 22-26页

作者： ZHAO Li-wei ZhanG han-qí CAO Yan-bo YANG Wen-jun jin Qun jin qin-han FU Yao Department of Chemistry Jilin UniversityChangchun130023 Foundational Department Jilin Architecture and Engineering CollegeChangchun130021

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ＩｎｔｒｏｄｕｃｔｉｏｎＥｌｅｔｒｏｔｈｅｒｍａｌｖａｐｏｒｉｚａｔｉｏｎ（ＥＴＶ）ａｓａｍｅａｎｓｏｆｓａｍｐｌｅｉｎｔｒｏｄｕｃｔｉｏｎｉｎｍｉｃｒｏｗａｖｅｉｎ－ｄｕｃｅｄｐｌａｓｍａ（ＭＩＰ）ｓｏｕｒｃｅｓｐｅｃｔｒｏｍｅｔｒｙｈａｓｂｅｅｎ...

关键词： Atomic emission spectrometry Microwave plasma torch Electrothermal vaporization

Detection of Penicillin via Surface Plasmon Resonance Biosensor

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Chemical Research in Chinese Universities 2012年第5期28卷 792-796页

作者： ZhanG Ying jin Wei YANG Meng-chao ZhanG Ti-qiang ZHOU Chao XIE Fei SONG Qi REN Hao jin qin-han MU Ying Research Center for Analytical Instrumentation Institute of Cyber-systems and ControlState Key Laboratory of Industrial Control TechnologyDepartment of Control Science and TechnologyZhejiang UniversityHangzhou 310058PR.China

A method of using Au colloid to capture the decomposed product of penicillin, penicillamine, on a surface plasmon resonance（SPR） biosensor for the quantitative determination of penicillin was developed. Based on the de-composition of penicillin to generate penicillamine and penilloaldehyde, a high sensitive biosensor for detecting penicillin was also developed. In our experiment, it was penicillamine rather than penicillin that has been measured. This is because penicillamine contains a functional group that makes it self-assembling on Au colloid to increase the molecular weight so as to improve the surface plasmon resonance signal. On a UV-Vis spectrophotometer, a high concentration of penicilliamine-Au complex was determined, indicating that penicillamine was already well combined with Au colloid. The method, using the combination of Au colloid with penicillamine, proved to detect penicillin.

关键词： Surface plasmon resonance(SPR) Biosensor Penicillamine Au colloid

Evaluation of Improved Ultrasonic Nebulizer for Miniature Simultaneous Microwave Plasma Torch Spectrometer

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Chemical Research in Chinese Universities 2006年第3期22卷 297-301页

作者： FENG Guo-dong JIANG Jie HUAN Yan-fu ZHENG Jian LI Ming CAO Yan-bo jin qin-han YU Ai-min Department of Analytical Chemistry College of Chemistry Jilin University Changchun 130021 P. R. China

A new automatic sample solution introduction system for miniature simultaneous microwave plasma torch（MPT） atomic emission spectrometer was developed. The operating parameters were optimized. The detection limits of the spectrometer with an ultrasonic nebulizer for Ag, Al, Ba, Ca, Cr, Cu, Fe, Mg, Mn, Sr, and V are 5-10 times lower than those obtained with a pneumatic nebulizer and are also lower than those obtained by a Model JX-lOlO MPT spectrometer. Two practical samples were analyzed to test the reliability and sensitivity of the system.

关键词： Microwave plasma torch Miniature simultaneous spectrometer Ultrasonic nebulizer Automatic introduction system

Study of Spectral Character of Alkali Metals Using Microwave Plasma Torch Simultaneous Spectrometer

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Chemical Research in Chinese Universities 2006年第6期22卷 703-707页

作者： FENG Guo-dong WAN Yi HUAN Yan-fu JIANG jie LI Ming CAO Yan-bo YU Ai-min jin qin-han Institute of Miniature Analytical Instrumentation College of Chemistry Jilin University Jilin Province Research Center for Engineering and Technology of Spectral Instruments Changchun 130023 P. R. China

A microwave plasma torch （MPT） simultaneous spectrometer was used to study the spectral character and the matrix effect on alkali metal ions in solution. The main parameters were optimized. The microwave forward power was 100 W. The argon flow rate that was used to sustain the Ar-MPT included the flow rate of carrier gas and the flow rate of support gas, which were 0. 8 and 1.0 L/min, respectively. The HC1 concentration in the solution was 0.02 mol/L. The observation height was 9. 0 ram. The detection limits of Li, Na, K, Rb, and Cs were 0. 0003, 0. 0004, 0. 009, 0.07 and 2.4 mg/L, respectively, and the resuhs obtained by the Ar-MPT were compared with those obtained by argon inductively coupled plasma（Ar-ICP） and argon microwave induced plasma（Ar-MIP）. The interference effects of several matrix elements were also studied.

关键词： Alkali metals Microwave plasma torch Simultaneous spectrometer Matrix effects

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短波近红外在体荧光分子成像技术最新进展

高等学校化学学报 2008年第12期29卷 2627-2634页

作者：牟颖金钦汉浙江大学工业控制技术国家重点实验室智能系统与控制研究所分析仪器研究中心杭州310058 吉林大学化学学院吉林省光谱分析仪器工程技术研究中心长春130021

癌症的诊断迄今所依赖的主要是一些离体检测方法以及超声波、X射线透视、X射线CT、核磁共振成像和PET等影像学技术.癌症的确诊则以肿瘤组织或病变细胞的形态和其它宏观特征为依据,这往往是一个侵入性和耗时的过程,不适于癌症的早期诊断... 详细信息

癌症的诊断迄今所依赖的主要是一些离体检测方法以及超声波、X射线透视、X射线CT、核磁共振成像和PET等影像学技术.癌症的确诊则以肿瘤组织或病变细胞的形态和其它宏观特征为依据,这往往是一个侵入性和耗时的过程,不适于癌症的早期诊断.这些影像学技术目前也大都难以发现分子水平上的问题.因此,迄今癌症的早期诊断仍然是医学界面临的一个空前挑战.光学成像方法,特别是荧光成像方法具有对人体无害、非侵入、高灵敏和可进行在体多目标成像的优点,随着荧光指示物的不断拓展和检测方法的不断创新,有望在分子和细胞水平上实现癌症的早期诊断.本文重点介绍了几项有较重要价值及工作在短波近红外区域的在体荧光成像技术的新进展.

关键词：近红外荧光成像量子点