Abstract: Provided is an analysis method capable of promptly providing information for determining whether a compound having a polyoxyalkylene group is contained in a sample such as a coating material or a coating film. The analysis method includes directly analyzing a sample such as a coating material or a coating film formed from the coating material by a matrix-assisted laser desorption/ionization method or a DART method to provide information for determining whether a compound having a polyoxyalkylene group, such as alkylphenol ethoxylate, is contained in the sample.

Abstract: An object of the present invention is to provide an aqueous dispersion capable of forming a coating film excellent in coloring stability, a method for producing the aqueous dispersion, an aqueous coating material and a coated article. This aqueous dispersion comprises water, a surfactant and a fluorinated polymer, wherein the fluorinated polymer is dispersed in the water, wherein the fluorinated polymer comprises units based a fluoroolefin and units based on a monomer having a hydrophilic group, and the surfactant is a compound of such a structure that to a benzene ring, 1 group represented by the formula —(OQ)nOSO3?X+ and 2 to 4 phenyl alkyl groups are bonded (where Q represents a C2-4 alkylene group, n represents an integer of from 2 to 48, and X+ represents Na+ or NH4+).

Abstract: An object of the present invention is to provide an aqueous dispersion capable of forming a coating film excellent in water resistance, antifogging properties and durable light resistance, a method for producing the aqueous dispersion, an aqueous coating material, and a coated article.