Ana Lec Prelims Flashcards
reveals the identity of
the elements and compounds in a sample
Qualitative analysis
indicates the amount
of each substance in a sample
Quantitative analysis
the mass or the volume of sample to
be analyzed
Classical methods
quantity that is proportional to the amount of
analyte in the sample, such as mass, volume,
intensity of light, or electrical charge
Instrumental method
determine the mass of the
analyte or some compound chemically related to
it.
Gravimetric method
determine the volume of a
solution containing sufficient reagent to react
completely with the analyte.
Volumetric method
involve the measurement
of such electrical properties as voltage, current,
resistance, and quantity of electrical charg
Electro analytical method
based on measurement
of the interaction between electromagnetic radiation
and analyte atoms or molecules or on the production
of such radiation by analytes.
Spectroscopic method
is the process of determining how
much of a given sample is the material
indicated by its name.
Assay
involves obtaining a small mass of a
material whose composition accurately
represents the bulk of the material being
sampled
Sampling
is a species that causes an error
in an analysis by enhancing or attenuating
(making smaller) the quantity being measured.
Interference
all of the
components in the sample containing an
analyte.
Matrix or sample matrix
are portions of a
material of approximately the same size that are
carried through an analytical procedure at the
same time and in the same way.
Replicate sample
