Fig. 1. Detection schematic diagram

Fig. 2. (a): Immunochromatographic strip of 10 ng·mL^-1 Chlorpyrifos; (b): LIBS detection spectrum of 10 ng·mL^-1 chlorpyrifos

Fig. 3. (a): Immunochromatographic test strips with different concentrations of chlorpyrifos; (b): LIBS spectral data of chlorpyrifos at different concentrations; (c) Regression curve of chlorpyrifos concentration in the detection range of 10~10⁶ ng·mL^-1