Separation method and fluorescence detection method for chloropropanol in ECF bleaching pulp water extracting solution

The invention belongs to the technical field of pulping and papermaking, and particularly relates to a separation method and a fluorescence detection method for chloropropanol in ECF bleached pulp. According to a molecular imprinting method, the molecularly imprinted polymer MIP with SiO2 particles as a carrier, MAA as a functional monomer, EGDMA as a cross-linking agent and 3-MCPD as imprinting molecules is prepared. According to the present invention, the SPE small column using the MIP as the filler is used for extracting the 3-MCPD in the solution, and the extraction result shows that the MIP-SPE has characteristics of good specificity and high adsorption capacity, and can meet the detection requirement of the chloropropanol in the ECF bleaching pulp. The invention relates to a novel method for detecting chloropropanol in a solution by taking dansyl chloride as a fluorescent reagent. A fluorescence spectrum test shows that the probe shows specific recognition on 3-MCPD in an n-hexane solution and has good