Term
|
Definition
(A) defined as A=log(P initial/P) where P initial is the radiant power of light striking the sample on one side and P is the radiant power emerging from the other side. Also called optical density |
|
|
Term
|
Definition
a graph of absorbance or transmittance of light versus wavelength, frequency, or wavenumber |
|
|
Term
|
Definition
relates the absorbance (A) of a sample to its concentration (c), pathlength (b), and molar absorptivity (a), A=abc |
|
|
Term
|
Definition
a graph showing the value of some property versus concentration of analyte. when the corresponding property of an unknown is measured, its concentration can be determined from the graph |
|
|
Term
|
Definition
a cell with transparent walls used to hold samples for spectrophotometric measurements |
|
|
Term
|
Definition
the factor used to multiply the initial concentration of reagent to find the diluted concentration |
|
|
Term
|
Definition
the constant of proportionality in Beer's Law; A=abc (A is absorbance, a is molar absorptivity, b is pathlength, and c is the molarity) |
|
|
Term
|
Definition
in a broad sense, any method using light to measure chemical concentrations |
|
|
Term
|
Definition
(T), defined as T = P/P initial were P initial is the radiant power of light emerging from the other side of the sample |
|
|
Term
|
Definition
distance between consecutive crests of a wave |
|
|