Supporting Information Filename Description JMS_5165-sup-0001-SM.docxWord 2007 document , 3.1 MB Figure S1. Photos of a) paper strip on nanoESI device and b) sampling area using paper strip. Table S1. Ingredient information of skin drugs. Table S2. Experimental data for the determination of precision (n = 6) of the PSMS detection of seven drugs in different concentrations. Table S3. Experimental data for LOD (S/N = 3) and LOQ (S/N = 10) of the PSMS detection of seven drugs. Table S4.
