quant quiz 1
Ruggedness
external factors
titrimetry
methods based on measuring volume
chemometrics
statistical treatment of data
species
chemical of intrest
analytical chemistry
deals with seperation,identification,determination
electrochemical
method that measures voltage,current,and resistance
gravimetry
methods based on measuring mass
qualitative
constiuents exist in a sample
quantitative
how much constiuent exists
Relative standard devation
comparing between diffrent measurements ofvarying absolute magnitude
relative error
measurment compared to the size of the measurment
spectral methods
evalvate the interaction ofanalyte with electromagnetic radation
chromatography
seperation of constituents due to interactions with two diffrent phases
absoloute error
amount of physical error in a measurment,expressed in the same units
contaminants
impurties introduced into sample prep that may alter accuracy/precison results
analyte
sustance that is og chemical intrest in analytical procedure
error
diffrence between measure and true value
validity
are the results correct
refers to technique which responds to one analyrte
specific
ability to respond to single analyte
specificity
method to the concentration of the analyte or property
sensitivity
ditinguish the analyte from other species
selectivity
robustness
internal factors
scale of operation
amount of sample avalible for analysis
precison
reproduce same measurements
accuracy
measurment close to correct value
analytical range
concentrations within the soloutions that will be measured by method rather then concentration
final choice
selecting a method requires assessing the analysisrequirments
interferent
species other than analyte increases or decreases the analytical result
masking
transformation of an interfering species into a form that cannot be detected
matrix
refers to all componennts in a sample including analyte
replicates
portion of material carried out through procedure same time,same way