Plate Count
The plate height given as:
with the column length and : the number of theoretical plates can be estimated from a chromatogram by analysis of the retention time for each component and its standard deviation as a measure for peak width, provided that the elution curve represents a Gaussian curve.
In this case the plate count is given by:
By using the more practical peak width at half height the equation is:
or with the width at the base of the peak:
Read more about this topic: Van Deemter Equation
Famous quotes containing the words plate and/or count:
“Then he rang the bell and ordered a ham sandwich. When the maid placed the plate on the table, he deliberately looked away but as soon as the door had shut, he grabbed the sandwich with both hands, immediately soiled his fingers and chin with the hanging margin of fat and, grunting greedily, began to much.”
—Vladimir Nabokov (1899–1977)
“There’s no telling what might have happened to our defense budget if Saddam Hussein hadn’t invaded Kuwait that August and set everyone gearing up for World War II½. Can we count on Saddam Hussein to come along every year and resolve our defense-policy debates? Given the history of the Middle East, it’s possible.”
—P.J. (Patrick Jake)