The Nitrogen Phosphorus Detector (NPD)

An example of the separation of a series of herbicides monitored by the NPD is shown in figure 23.

Another interesting application of the NPD is in the GC analysis of the basic drugs. A chromatogram of a synthetic mixture of basic drugs using the NPD is shown in figure 24.

Figure 24 The Separation of Some Basic Drugs Using the NPD to Selectively Detect Compounds Containing Nitrogen

Courtesy of Supelco Inc.