Standard Addition by Serial Spikes
One approach for preparing standard additions is to spike equal volumes of the sample with different volumes of a standard and diluting each to the same final volume. An alternative form of […]
Image and Video Exchange
Get a look at images, photos, videos, and animations that encompass many facets of teaching and learning about analytical chemistry.
Matrix Effects
Sometimes the solution matrix in which the analyte resides affects the relationship between the signal and the analyte’s concentration, as shown below. We call this a matrix effect. When matrix effects are […]
Two Ways to Prepare a Standard Addition
The illustration below shows one method for making a standard addition. The volumetric flask on the left contains a portion of the sample, Vo, and the volumetric flask on the right contains […]
Standard Addition Calibration Curve
Shown at the top is a set of six standard additions for the determination of Mn2+. The flask on the left is a 25.00-mL sample diluted to 50.00 mL. The remaining flasks […]