CHEM: SPECTROCHEMICAL Flashcards
is any analytical method that uses light for measurement of chemical concentrations.
Spectrophotometry
Spectrophotometry is also called?
spectroscopy
Measurements based on light and other forms of electromagnetic radiation.
SPECTROCHEMICAL METHODS
was originally the study of the interaction between radiation and matter as a function of wavelength (λ)
SPECTROSCOPY
referred to the use of visible light dispersed according to its wavelength,
e.g. by a prism
spectroscopy
T or F
Light can be thought of as a wave or particle.
True
is the distance between crests of a wave (m)
wavelength
is the number of oscillations per second (Hz)
frequency
empirical relationship that relates the
absorption of light to the properties of the material through which the light is travelling.
BEER-LAMBERT LAW
also known as Beer’s law or the Lambert–Beer law or the Beer–Lambert–Bouguer law
BEER-LAMBERT LAW
a plastic ware wherein we will put a
sample and light will pass through it.
Cuvette
the fraction of incident light at a
specified wavelength that passes through a sample.
Transmittance
a unitless measure of the transmittance of an optical element for a given length at a given wavelength
Optical density
involves interactions of matter with
electromagnetic radiation, such as light.
ELECTROMAGNETIC SPECTROSCOPY
T or F
Electromagnetic spectroscopy can be classified into:
- Emission spectroscopy
- Absorption spectroscopy
- Scattering spectroscopy
True
the quantifiable study of electromagnetic spectra.
SPECTROPHOTOMETRY
a photometer (a device for
measuring light intensity) that can measure
intensity as a function of the color, or more
specifically, the wavelength
spectrophotometer
study of electromagnetic radiation spectra
given off by atoms or molecules that undergo a
transition to a lower energy level.
EMISSION SPECTROSCOPY
study of electromagnetic radiation spectra
absorbed by atoms or molecules that change
energy levels; the atoms usually positioned
between a radiation source and the observer.
ABSORPTION SPECTROSCOPY
absorption of infrared
radiation
Vibrational spectroscopy
is a technique for determining the concentration of a particular metal element in a
sample
Atomic absorption
absorption of ultraviolet
and visible light
UV/visible spectroscopy
Measures the absorption of gamma rays by atoms bound in a solid as a function of gamma-ray energy.
Mossbauer spectroscopy
the subset of spectroscopy that
deals with the infrared region of the
electromagnetic spectrum
INFRARED SPECTROSCOPY
involves the interaction of charged species with
magnetic and/or electric fields, giving rise to a mass spectrum
MASS SPECTROMETRY
measures the amount of light that a substance
scatters at certain wavelengths, incident angles, and polarization angles.
SCATTERING SPECTROSCOPY
spectroscopic technique used in condensed
matter physics and chemistry to study vibrational, rotational, and other low-frequency modes in a system.
RAMAN SPECTROSCOPY
involves interactions with electron beams.
ELECTRON SPECTROSCOPY
