| abstract |
The invention discloses a trace detection method, which is characterized in that a sample to be detected and a doping agent are placed on the same carrier to detect trace substances. The invention arranges the dopant on the sampling medium and the carrier, saves and simplifies the module design in the instrument, does not influence the substance to be measured, improves the reliability, can adopt different dopants on the surface of the sampling medium for different scenes, and is convenient for replacing different scenes. |