Explore resources, experiments, and teaching materials shared by the analytical sciences community.
Students use DRIFT spectra and multivariate analysis to characterize sands collected from different locations. A principal component analysis shows that the scores for the first and fourth principal component allows students to […]
This experiment uses a novel approach to introduce students to the method of standard additions. To approximate the contribution of shell fragments in sand collected from a beach (in this case, from […]
This experiment describes a quantitative UV-Vis analysis of mixtures of diesel/ethanol and diesel/biofuel based on the absorption of a solvochromatic probe dye. Students first synthesize the dye and then monitor the change […]
The surface-enhanced Raman scattering (SERS) capabilities of silver nanoparticles is studied in this experiment by estimating the their analytical enhancement and surface enhancement factors. Students are introduced to the fundamentals of SERS. […]
In this experiment students complete four tasks: monitoring the production of biodiesel by a transesterification of a commercial oil; quantifying mixtures of biodiesel and petroleum-based diesel; using a Karl-Fisher titration to determine […]
The illustration below shows one method for making a standard addition. The volumetric flask on the left contains a portion of the sample, Vo, and the volumetric flask on the right contains […]
The photo below shows a typical example of a packed column for gas chromatography. This column is made from stainless steel and is 2 m long with an internal diameter of 3.2 […]
Shown below is a schematic diagram of a thermal conductivity detector. This is one of a matched pair of cells. The sample cell takes the carrier gas as it elutes from the […]
Shown below is a schematic diagram of a heated GC injector port for use with a packed column. The needle pierces a rubber septum and enters into the top of the column, […]
Shown at the top is a reagent blank (far left) and a set of five external standards for Cu2+ with concentrations increasing from left to right. Shown below the external standards is […]
Shown at the top is a set of six standard additions for the determination of Mn2+. The flask on the left is a 25.00-mL sample diluted to 50.00 mL. The remaining flasks […]
Suppose you are working at your local sewage treatment facility. One of your responsibilities is to monitor the effluent’s biological oxygen demand (BOD), which is a measure of the amount of biologically […]
