1. A multicomponent quantitative analysis method using a chromatograph for determining quantities of a number of compounds contained in a sample using the chromatograph, the method comprising following steps: at least a portion of a number of analytes which may possibly be contained in a sample to be analyzed is divided into a plurality of groups based on at least either an elution position determined by silica gel column chromatography under a same condition or a partition ratio in a hexane-acetonitrile partition method, and a different surrogate is designated for each group; the surrogate is added to a standard sample for a creation of calibration curves as a common internal standard substance for analytes included in each group, a chromatographic analysis of the standard sample is performed, and a calibration curve to be used for a quantitative determination of the analytes by an internal standard method is created based on a result of the chromatographic analysis; and in a quantitative determination of analytes contained in an unknown sample, the plurality of surrogates are added to the unknown sample, a chromatographic analysis of the unknown sample is performed, and a result of this chromatographic analysis is compared with the corresponding calibration curves to determine the quantities of the analytes.