[Determination of artificial synthetic pigment by excitation spectrophotometry]

Solid phase spectrophotometry is a mew, simple, fast and sensitive trace analytical method. In this report, it is presented with a method that the polyamide was used for the absorbance and the excitation spectra was measured directly. The background of the solid phase spectrophotometry was overcome, the sensitivity was increased in a big way. The method is good standard addition recovery and precision, high accuracy. Not only the trace inorganic ion can be analysed by the solid phase method, but also the artificial synthetic pigment, the result was satisfied.