Intro
Distillation, precipitation, and extraction
What are classical methods of analysis?
Random, Systematic, User
What are types of errors?
A set of lab procedures to ensure test results are accurate and reliable.
What is quality control?
Includes a source, wavelength selector, sample, radiation transducer & signal processor
What are the basic components of a spectrometer?
This type of sample holder is used for uV or fluorescence absorbance
What is a quartz cuvette?
A device that translates physical or chemical information of a system into a number the experimenter can interpret
What is an instrument?
Error associated with both accuracy and precision
What is user error?
The nearness to the "true" value
What is accuracy?
This type of spectroscopy requires no emission source
What is emission (spectroscopy)?
The two wavelength selectors are set at this angle in fluorescence spectroscopy
What is 90 degrees?
This domain includes analog, time and digital data
What is the electrical domain?
What are random errors?
The ability to discriminate between small differences in analyte concentration
What is (instrumental) sensitivity?
Width at half height
What is effective bandwidth?
The inside of a monochromator is usually painted this color -- it is also the color the Rolling Stones want to paint a red door
What is black?
This type of calibration is best used when there is little to no interference from the matrix.
What is external standard?
A type of error which is caused by faulty calibrations or inappropriate conditions and can be detected and corrected
What is an instrumental (or systematic) error?
The minimum signal that can be detected at a known confidence level
What is the detection limit?
Instrument absorption in the 400 - 4000 cm-1 range due to to molecular activity
What is infrared spectroscopy?
Decreasing this results in greater resolution...but it will cost you time
What is slit width?
This type of calibration adds a substance with a similar response as the analyte to all samples, blanks, and standards.
What is internal standard?
A curve whose properties result in a peak at the mean and a width of standard deviation
What is a Gaussian distribution?
The area from the limit of quantification to the limit of linearity
What is the dynamic range?
Provides the advantages of more radiant power to the detector, greater S/N, high resolving power, and all wavelengths reaching detector simultaneously
What is Fourier Transform?
This type of lamp is used in the ultraviolet range and can be used to test the wavelength accuracy
What is deuterium?