Analytical chemistry is the branch of chemistry dealing with measurement, both qualitative and quantitative. This discipline is also concerned with the chemical composition of samples. In the field, analytical chemistry is applied when detecting the presence and determining the quantities of chemical compounds, such as lead in water samples or arsenic in tissue samples. It also encompasses many different spectrochemical techniques, all of which are used under various experimental conditions. This branch of chemistry teaches the general theories behind the use of each instrument as well analysis of experimental data. Upon successful completion of this course, the student will be able to: Demonstrate a mastery of various methods of expressing concentration; Use a linear calibration curve to calculate concentration; Describe the various spectrochemical techniques as described within the course; Use sample data obtained from spectrochemical techniques to calculate unknown concentrations or obtain structural information where applicable; Describe the various chromatographies described within this course and analyze a given chromatogram; Demonstrate an understanding of electrochemistry and the methods used to study the response of an electrolyte through current of potential. (Chemistry 108)

An advanced course covering anatomical, physiological, behavioral, and computational studies of the central nervous system relevant to speech and hearing. Students learn primarily by discussions of scientific papers on topics of current interest. Recent topics include cell types and neural circuits in the auditory brainstem, organization and processing in the auditory cortex, auditory reflexes and descending systems, functional imaging of the human auditory system, quantitative methods for relating neural responses to behavior, speech motor control, cortical representation of language, and auditory learning in songbirds.

The names of algal divisions emphasize the prominence of color in their biology. Using readily available source materials, students extract polar and non-polar photosynthetic pigments from red, brown, and green algae and from cyanobacteria and angiosperms. The non-polar pigments are then quickly and cleanly separated by thin layer chromatography on narrow strips of plastic-backed silica gel with minimal amounts of solvent. The resulting patterns can be used to infer the origins of chloroplasts in eukaryotes and the phylogenetic relationships among the source taxa or to illustrate a wider assortment of accessory pigments than those found in angiosperms alone.

This exercise has been designed to help first-year biology students understand Mendelian inheritance. The pterin (red) eye pigments of wild type and mutant strains are separated using a simple paper chromatography system, and the patterns are analyzed to determine where the metabolic pathway is blocked in each mutant. Crosses of these strains are followed for two generations to provide data that students analyze to determine the mode of inheritance of each mutation, as well as the relationship between each mutant phenotype and the enzyme in the pathway which is affected by the mutation.

First term of a three-term laboratory subject sequence for Course V majors. Experimental work emphasizes development of fundamental laboratory skills and techniques: volumetric and colorimetric analysis; nuclear magnetic resonance; preparation, purification, and characterization of chemical substances; and data analysis.

This activity is a lab investigation where students design an experiment to extract pigments (AKA chromatography) from different colored, water soluble markers.

This activity is a lab investigation where students design an experiment to extract pigments (AKA chromatography) from different colored, water soluble markers.

The purpose of this resource is to explore what pigments exist in leaves and their importance. Students will conduct an experiment using paper chromatography to separate pigments present in leaves.

Laboratory Chemistry (5.310) introduces experimental chemistry for students requiring a chemistry laboratory who are not majoring in chemistry. Students must have completed general chemistry (5.111) and have completed or be concurrently enrolled in the first semester of organic chemistry (5.12). The course covers principles and applications of chemical laboratory techniques, including preparation and analysis of chemical materials, measurement of pH, gas and liquid chromatography, visible-ultraviolet spectrophotometry, infrared spectroscopy, kinetics, data analysis, and elementary synthesis.

Learn more about why leaves change color and experiment to separate colors within a leaf.

General principles of separation by equilibrium and rate processes. Staged cascades. Applications to distillation, absorption, adsorption, and membrane processes. Phase equilibria and role of diffusion. 10.32 will be offered for 6 units starting spring 2004.

This course serves as an introduction to the fundamental principles of separation operations for the recovery of products from biological processes, membrane filtration, chromatography, centrifugation, cell disruption, extraction, and process design. This course was last taught during the regular school year in the Spring semester of 1999, but has been a part of the MIT Technology and Development Program (TDP) at the Malaysia University of Science and Technology (MUST), as well as at MIT's Professional Institute in more recent years.