分析仪器
Gas Chromatography-Mass Spectrometry (GC-MS) is a dual technique that combines an ordinary gas chromatograph with a quadrupole mass spectrometer acting as the detector. 气体 chromatograph is able to separate a liquid or gaseous mixture into its components and then the mass spectrometer measures the amount of each compound. 用质谱法， the user also receives information about the composition of molecules in the sample, 允许识别未知组件. 学生们获得使用这种乐器的经验 in CHEM 330: Instrumental 《十大赌博登录官网》等课程. 这个乐器 was purchased new in 2015 在科学计划的资助下.
TA Instruments Q20差示扫描量热计
的 Differential 扫描量热计 (DSC) can be used to investigate the thermal 物质的性质，如聚合物和晶体. 一个小铝锅装满了水 with a sample and heated or cooled in a very precise furnace. 吸收的热量 or released by the sample, compared to an empty reference pan, is recorded. 从 resulting plot, phase transition temperatures (for example, the melting point) can be identified and their changes in enthalpy and entropy can be calculated. 这个乐器 includes an auto-sampler which can be programmed for up to fifty samples, making it 适用于大班. 这台仪器是新买的 2009 with funding from 科学倡议.
Buck Scientific 210 VGP Atomic Absorption Spectrophotometer
Atomic Absorption (AA) is primarily used to determine the concentrations of elements in solution and it is particularly useful for metallic elements, such as copper and 引领. A very hot flame is used to break molecules into individual atoms and then a single type of atom is detected using a special lamp system. 这个仪器是 used for analysis in courses such as CHEM 122: General 化学 II and CHEM 230: 定量分析.
的rmo Scientific Evolution 300 Ultraviolet-visible Spectrophotometer
This spectrometer operates in the ultraviolet and visible regions of the spectrum. 它有两种主要模式. 在一种模式下，样品吸收的光量为 measured over a range of wavelengths, producing a graph known as an absorption spectrum, which can provide information about the structure of molecules in the sample solution. In the other mode, the light absorbed by a sample is measured at a single wavelength and compared to standards with known concentration in order to determine the concentration 样品的一个组成部分. 这两种模式在化学课程中都是常用的 and this type of spectrometer is one of the first that students will learn to use. 这台仪器是新买的 2008年，由科学计划资助. It also has an attachment that allows the temperature of the sample to be adjusted 在测量.
Jasco FTIR-4100 Infrared Spectrophotometer with Pike MIRacle ATR
Fourier-Transform Infrared (FTIR) spectrometry employs wavelengths in the infrared region of the spectrum to investigate bonding and functional groups in molecules. This technique is useful primarily for organic chemistry in which a compound may 由其吸收光谱来鉴别. 在十大赌博登录官网，学生们经常使用这个 instrument in CHEM 221: Organic 化学 I and CHEM 222: Organic 化学 II. 的 Attenuated Total Reflectance (ATR) accessory allows users to collect spectra quickly 而且不需要大量的样品准备. 这台仪器是2007年购买的 在科学计划的资助下.
Horiba/Jobin Yvon Fluoromax-4荧光光谱仪
荧光是受激分子发出的光. 并不是所有的分子都会发出荧光， but those that do can be investigated using this instrument. 的荧光谱仪 是定性的还是定量的. 反应动力学研究 are also possible with the accessory that allows one to change the temperature of 测量过程中的样品. 学生在CHEM 330: Instrumental课程中使用该仪器 《十大赌博登录官网》等课程. 这台仪器是新买的 2008年，由科学计划资助.
Anasazi Eft-60核磁共振光谱仪
Nuclear Magnetic Resonance (NMR) is a technique that probes a single type of atomic 样品中的原子核. 的se nuclei provide information about the structures of molecules 在这个样本中. 的 original Varian instrument at Aquinas was upgraded in 2005 with Fourier-Transform software and a new probe for hydrogen-1 nuclei (protons) and further improved in 2006 with the capacity for carbon-13 nuclei using funds from the Science 倡议. 学生 use the instrument primarily for CHEM 222: Organic 化学 II和CHEM 330:仪器分析方法.
安捷伦1100系列高效液相色谱仪
High-performance liquid chromatography (HPLC) is a separation technique that employs a pressurized mixture of solvents to pump a sample through a short packed column. Different types of molecules in the sample pass through the 以不同速率列, and thus elute from the end of the column at different times. 随着样本的通过 out of the column, molecules are detected with a tiny version of an UV-vis spectrophotometer. Sophisticated software 控制仪器并显示结果数据. 的 department has two identical instruments of this type, which were acquired as donations from Pfizer's Holland Research and Development laboratory in 2003. 学生主要是 使用高效液相色谱法在化学330:仪器分析方法.
惠普6850系列气相色谱仪
Gas chromatography (GC) is a separation technique that employs an inert gas, such as nitrogen or helium, to force a gaseous sample through a very long capillary column. Different types of molecules in the sample experience stronger or weaker interactions with the coating on the inside surface of the capillary, thus passing through the 以不同速率列. 当每种类型的分子离开色谱柱时，就会被检测到 火焰电离检测器(FID). 装有专门软件的专用计算机 控制仪器并显示结果数据. 这台仪器是 as a donation from Pfizer's Holland Research and Development laboratory in 2003. 学生 use GC in CHEM 221: Organic 化学 I, CHEM 222: Organic 化学 II, and CHEM 330:仪器分析方法.