HGZ－Ⅱ型自动辉光放电光源的研制

在仔细研辉光放电光源工作过程的基础上，在国内首先设计、制成了ＨＧＺ－Ⅱ型自动辉光放电光源。该光源除换样品外，实现了抽空、进气、对光、预燃、曝光、充气、复位等摄谱全过程的自动控制。有水压、真空度、短路保护措施和醒铃线路。设计合理，性能良好，操作简便，工作安全，可靠。程控部分的编排包括顺序控制。时序控制和条件控制。由于使用了通用执行元、器件，降低了成本，提高了耐用性。为满足表层，逐层分析的需要，还专门设计了计数电路。供电源实现了高压直流供电和脉冲供电。该光源可应用于合金中主成分和少量杂质分析及金属、合金表层，逐层成分分析。     

植物样品中单宁的微波溶出快速测定法研究

研究了利用微波代替一般的沸水浴处理试样的方法。对不同植物样品中单宁的浸提测定，与常规方法做了对照，并讨论了微波功率、时间、酸度等因素对测定结果的影响。研究表明，此法可大大地缩短测定时间，提高测定效率，节省人力、物力，不污染环境，便于大批量样品的测定，相对标准偏差≤１．４％，测定结果较为满意。为植物样品中单宁的测定，提供了一个快速、简便、准确的分析方法，并可借鉴于其它样品的测定。     

基于OBE和EHS理念的制药过程安全与环保课程体系建设

“制药过程安全与环保”为制药工程专业本科生必修核心课程，但其课程体系不完善，基于OBE和EHS理念，从课程目标、课程内容、课程思政、教材、教学方法、课程考核与评价方法等方面对该课程进行了建设和完善，取得了一些创新性成果与经验，制定了教学目标，创新性地设置了课程内容，开展了课程思政，主编了教材，提出了适宜的教学方法，建立了课程考核与评价方法，可以为全国其他高等院校类似课程的教学与建设提供有益的借鉴。     

HGZ—Ⅱ型自动辉光放电光源的研制

在仔细研辉光放电光源工作过程的基础上，在国内首先设计，制成了ＨＧＺ－Ⅱ型自动辉光放电光源。该光源除换样品外，实现抽空、进气、对光、预燃、曝光、充气、复位等摄谱全过程的自动控制。有水压、真空度、短路保护措施施和醒铃线路。设计合理，性能良好，操作简便，工作安全，可靠。程控部分的编排包括顺序控制。时序控制和条件控制。由于使用通用执行元、器件，降低了成本，提高了耐用性。为满足表层，逐层分析的需要，还专门设     

银基微电极方波伏安法测定矿样中痕量铅镉

研究了银基质微电极的伏安特性，经与玻碳电极比较，具有灵敏度高、重现性好、分辨率强、线性范围宽、使用寿命长等优点。并克服了宏观电极的某些缺点，消除了充电电流的影响，基线平稳，峰形清晰。     

中日合作废气处理项目分析实验室管理的几点经验

为顺利开展中日合作废气处理项目，中国石油化工股份有限公司环境监测总站建立了废气分析实验室，并完善了质量控制、质量保证体系，这些管理体系包括实验室物资设备的管理，实验室环境，质量保证体系，废气样品采集及实验室分析手段等。为废气处理项目的实施提供了有力的技术支持，并实现了实验室管理的科学化、标准化、规范化。     

19世纪化学界一颗闪闪发光的明星——纪念著名化学家本生逝世100周年

１９世纪以来，一直处于封建割据状态的德国，经过一系列政治、经济、教育体制的改革，提高了国民科学文化素质，加速了国家工业化进程。一批批学者纷纷到英、法等先进国家留学或进行学术访问，积极学习外国先进的科学技术，逐步实现了大学、实验室和工厂企业一体化的循环加速发展机制，使德国很快在钢铁、煤炭、机械、纺织、合成染料和药物等方面成为世界头号强国。先进的教学科研体制，优越的科研条件以及一系列奖励措施，大大调动了各行各业科学研究人员的积极性和创造精神，培养了一大批世界一流的科学家、高素质的企业家和工程师，为德…     

火焰原子吸收法测定合成羰基镍残渣中高含量的铜钴镍铁

本文研究了用火焰原子吸收光谱法测定合成碳基镍残渣中高含量Ｃｕ、Ｃｏ、Ｎｉ、Ｆｅ，系统地试验了测定条件和Ｈ＿２ＳＯ＿４浓度、Ｓｉ含量对测定的影响，以及Ｃｕ、Ｃｏ、Ｎｉ、Ｆｅ之间的相互干扰情况，研究了合适的溶样方法，选择理想了的分析谱线等，有效地消除了共存元素的干扰，实现了在同一溶液中测定合成基镍残渣中的高含量多元素，方法简便，快速，准确。     

新型尼龙214,414,614,814,1014和1214的合成与表征

用熔融缩聚法基于十四碳二酸合成了一系列偶偶尼龙，包括尼龙2 14，4 14， 6 14，8 14，10 14，12 14。用红外光谱、元素分析、核磁共振、差示扫描热分析 、热失重分析、热机械分析、粘度法对合成尼龙的结构与性能进行了表征。同时还 初步研究了尼龙12 14的物理性能，发现其物理性能介于尼龙66和聚乙烯之间。     

3—巯基—2—丁醇合成方法的改进及其异构体组成的分析鉴定

以丁酮、氨、硫为原料，通过综合反应合成２，４，５－三甲基－２－乙基噻唑淋－△＾３，再经水解、还原共三步反应合成了３－巯基－２－丁醇。考察反应温度、催化剂、时间等因素对反应的影响，确定了优化条件：在３５℃进行缩合反应，以磷酸作为催化剂在３５℃下水解４ｈ，以ＫＢＨ４作为还原剂在２５℃下还原。简化了操作，缩短了反应时间，降低了成本，收率达５４％。通过ＧＣ，ＧＣ－ＭＳ，＾１ＨＮＭＲ等手段确定了产品的组成及     

高压微波消解-电感耦合等离子体原子发射光谱同时测定进口奶粉中Fe、Zn、Ca、Mg、Cu含量

通过优化试验确定仪器的最佳工作参数,硝酸-过氧化氢微波消解样品,采用电感耦合等离子体原子发射光谱同时测定进口奶粉中的Fe、Zn、Ca、Mg、Cu多种金属元素含量．试验过程方便快捷,多种元素同时测定节约测定时间．方法的准确度、精密度均符合日常检验的需要．     

Dispersive solid-phase extraction based on butylamide silica for the determination of sulfamethoxazole in milk samples by capillary electrophoresis

A new method based on the combination of dispersive solid-phase extraction and capillary electrophoresis is proposed for the determination of sulfamethoxazole in milk samples. Butylamide silica was synthesized and used as extractant. Factors involved in sample treatment method such as: butylamide silica amount, NaOH concentration in methanol, sample volume, and dispersion time were evaluated using a Taguchi parameter design. Under optimal conditions, average recoveries ranged from 73 to 85% with a limit of detection of 0.05?mg?L^?1 were achieved. The proposed method is a useful technique for cleanup milk samples.     

Preparation of a soluble solid sample by a continuous ultrasound assisted dissolution system for the flow-injection atomic absorption spectrometric determination of iron in milk powder and infant formula

A simple and new flow-injection manifold (CUDS) for the continuous ultrasound assisted dissolution of a soluble solid sample coupled to a flow-injection flame atomic absorption spectrometric manifold for the continuous iron determination is described. An experimental design was used for the evaluation of factors involving the CUDS. The method was applied to a certified reference material (CRM-151, skim milk powder) for quality assurance/validation and to real samples (milk powder and infant formulas). The total sampling frequency achieved was 80 samples per hour with a relative standard deviation for the complete procedure of 1.1%. The detection limit was 0.60 μg g⁻¹ for a sample amount of 30 mg. The results demonstrated that the CUDS is an innovative and efficient tool as compared to the manual-traditional sample preparation methods, but with drastic increase of both sample throughput and precision.     

Improved method for rapid determination of vitamin A in small samples of breast milk by high-performance liquid chromatography

Employing a short, potassium hydroxide (KOH) saponification (25 min) and rapid extraction with n-hexane-toluene (1:1) and a <4-min retention time, a convenient, rapid, accurate and precise determination of vitamin A in breast milk was developed. The recovery rate was 102.3 +/- 2.5% and the small relative standard deviation (intra-assay 1.9%, inter-assay 2.3%) resulted in high precision. The amount of breast milk needed is very low (1 ml) which makes the method suitable for the use in free field studies with large sample sizes. The simple extraction and separation steps allow a high throughput screening under routine laboratory conditions.     

Development of a one step strip test for the detection of sulfadimidine residues.

The one step strip test described is a competitive immunoassay in which the detector reagent consists of colloidal gold particles coated with affinity purified polyclonal anti-sulfadimidine (SDD) antibodies. The capture reagent in the assay is an SDD-ovalbumin conjugate which is immobilised on the lateral flow membrane of the test device. In the test procedure, 150 microliters (four drops) of a liquid sample (buffer, urine or milk) are brought into the sample well of the test device and allowed to migrate over the membrane. The more analyte present in the sample, the more effectively it will compete with the SDD immobilised on the membrane for binding to the limited amount of antibodies of the detector reagent. A sufficient amount of SDD in the sample will therefore prevent the binding of the detector reagent to the SDD immobilised on the membrane. Therefore, a positive sample will not show a test line in the read-out zone. With spiked buffer or calf urine this was obtained at a level of > 10 ng ml-1 of SDD and with spiked (diluted) fresh cow milk at a level > 20 ng ml-1 of SDD. At these levels, the test is applicable only as a qualitative assay. The presence or absence of a test line indicates lower or higher levels of SDD, respectively. The major advantages of the one step strip test are that results can be obtained within 10 min and that all reagents are included in the test device.     

On-line concentration of neomycin and screening aminoglycosides in milk by short capillary column and tandem mass spectrometry

An MS-MS method was established for the trace analysis of neomycin and screening aminoglycoside antibiotics (such as amikacin, gentamicin, kanamycin, and tobramycin) in a milk sample. The extraction and purification are based on ion-pair SPE technology on a short fused-silica capillary RP C18 column. The capillary SPE column provided the stationary phase to retain aminoglycoside antibiotics and MS-MS compatible organic acid heptafluorobutyric acid (HFBA) was used as protein precipitation and ion-pair reagent. Aminoglycosides were extracted in this short column and directly eluted to MS-MS without evaporating to dryness and reconstituted with MS-MS compatible solvent after SPE. The LOQ was 0.1 microg/mL and the calibration curve was linear up to 6.4 microg/mL. A small amount of milk product, 10 microL, is sufficient for the analysis and application of this method as the trace analysis of neomycin in the biological matrix proved simple and workable.     

Fast Determination of Residual Sulfonamides in Milk by In-Tube Solid-Phase Microextraction Coupled with Capillary Electrophoresis-Laser Induced Fluorescence

A fast, feasible, eco-friendly method for determination of sulfonamides using in-tube solid-phase microextraction (IT-SPME) coupled with capillary electrophoresis-laser induced fluorescence was developed. The graphene-embedded porous polymer monolithic column prepared via in-situ UV polymerization was proposed as the IT-SPME column. The method was applied to determine residual sulfonamides in a real milk sample, and an amount of 3.7 ng mL^?1 sulfamethazine was detected, which was much lower than the maximum residue limit.     

Separation and concentration of sulfonylurea herbicides in milk by ionic‐liquid‐based foam flotation solid‐phase extraction

The ultrasound‐assisted ionic liquid foam flotation solid‐phase extraction of sulfonylurea herbicides in milk was developed and validated. The proteins and lipids were isolated from the sample matrix by adding salt and adjusting the pH value. The target analytes eluted from the solid‐phase extraction cartridge were determined by high‐performance liquid chromatography. Some experimental parameters, including the pH value of sample solution, amount of NaCl, ionic liquid type, extraction time, flow rate of carrier gas, flotation time, and solid‐phase extraction cartridge type were investigated and optimized. Under the optimized experimental conditions, the limits of detection for metsulfuron, pyrazosulfuron, chlorimuron‐ethyl, and nicosulfuron were 1.3, 0.6, 0.7, and 1.1 μg/L, respectively. When the present method was applied to the analysis of milk samples the recoveries of the analytes ranged from 84.3 to 105.2% and relative standard deviations were >5.7%.     

Natural estrogens in dairy products: Determination of free and conjugated forms by ultra high performance liquid chromatography with tandem mass spectrometry

Natural estrogens are synthesized by mammals in different amounts depending on the developmental stage and pregnancy/lactation period, and they may pass into milk, where they are mostly present as glucuronated and sulfated forms. In modern dairy practices, about 75% of milk is produced from pregnant cows; therefore, the amount of hormones that may pass into milk could be of concern. While estrogen determination in milk has been investigated in depth, the individual determination of estrogens and their conjugated forms in dairy products has not been fully addressed. The aim of this work was to develop and assess a sensitive method, using the peculiar retention properties of graphitized carbon black, to extract natural free estrogens and their major conjugated metabolites, without any enzymatic cleavage, from yogurt, cheese, and butter. The free and conjugated estrogens were eluted in two distinct fractions from the solid‐phase extraction cartridge and analyzed separately by ultra high performance liquid chromatography coupled to tandem mass spectrometry. Recoveries were higher than 80% for all the three sample typologies. The highest matrix effects were observed for butter, which was richest in lipid content, but was below 30%. A survey on some commercial dairy products suggests that production processes decreased estrogen content.     

Facile preparation of magnetic graphene oxide/nanoscale zerovalent iron adsorbent for magnetic solid‐phase extraction of ultra‐trace quinolones in milk samples

A simple pH‐responsive magnetic solid‐phase extraction method was developed using graphene oxide–coated nanoscale zerovalent iron nanoparticles as an efficient adsorbent prior to high‐performance liquid chromatography‐tandem mass spectrometry for determination of ultra‐trace quinolones in milk samples. Various parameters affecting maghemite synthesis and separation such as pH of sample solution, amount of magnetic adsorbent, eluent type, and volume were optimized. The limits of detection are from 3.1 to 13.3 ng/L. The intra‐ and interprecision values are in the range of 2.9–6.9% and 7.6–15.1%, respectively. Recoveries are from 82.4 to 103.9%. Therefore, this simple and sensitive method is suitable for detecting ultra‐trace quinolone residues in milk.