Term
|
Definition
| (irradiance of light leaving a sample 'P')/(irradiance of light entering a sample 'P0') |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Absorbance = (Epsilon)(b (path length))(concentration) |
|
|
Term
|
Definition
| molar absorptivity and is dimensionless. |
|
|
Term
|
Definition
| molecule responsible for light absorption |
|
|
Term
|
Definition
| emission of light from an excited molecule |
|
|
Term
|
Definition
concentration dependent equilibrium.
very high concentrations of solute can act as a solvent. |
|
|
Term
|
Definition
| indicates that only two species are present. |
|
|
Term
|
Definition
| The key is rapid, repetitive analysis – all automated, samples are mixed with reactants, reaction occurs in a mixing coil, and the mixture goes to the detector at the time of color development. |
|
|
Term
| Light sources are either a...... |
|
Definition
| deuterium lamp, tungsten lamp or a laser |
|
|
Term
| Double-beam scanning spectrophotometer |
|
Definition
| Can measure absorbance as a function of time |
|
|
Term
| atomic absorption spectroscopy uses a ----- lamp |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Charges species are more soluble in ----- than ---- |
|
Definition
|
|
Term
| Narrow columns provide ------ resolution than wider columns but require ----- operating pressure and have ------ sample capacity. |
|
Definition
|
|
Term
| flame ionization detector is sensitive to |
|
Definition
| carbon containing compounds and is considered to be very sensitive. |
|
|
Term
| electron capture detector is sensitive to |
|
Definition
| analytes containing a halogen and is insensitive to hydrocarbons. It uses a radioactive 63Ni source. |
|
|
Term
| high boiling point generally means ------- retention time |
|
Definition
|
|
Term
| high polarity generally means ------ retention time. |
|
Definition
|
|
Term
|
Definition
(plank's constant)(frequency)
or
((Na)(h)(c))/lambda |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| what is the HCL light source and why are they used? |
|
Definition
| Ne or Ar gas fills the lamp and a cathode of the same element being analyzed is used. They are needed for lines less than 0.01nm. |
|
|
Term
| visible spectrum is ------nm |
|
Definition
|
|
