MATÉRIAU HYGIÉNIQUE, PROCÉDÉ DE MESURE DE CONTENU DE RÉSINE ABSORBANT L'EAU COMPRIS DANS UN ARTICLE ABSORBANT OU UN PRODUIT INTERMÉDIAIRE DANS SON PROCÉDÉ DE FABRICATION, ET PROCÉDÉ DE FABRICATION DE MATÉRIAU HYGIÉNIQUE OU D'ARTICLE ABSORBANT L'UTILISANT
[Problem] To provide a convenient/safe and highly precise method for measuring the content of a water-absorbing resin in a hygienic material or absorbent article. [Solution] A method for measuring the content of a water-absorbing resin having a water-soluble cation in the form of an ion-dissociating group in a hygienic material, an absorbent article, or an intermediate product in the manufacturing process thereof that includes the water-absorbing resin, wherein A) a step for measuring the amount of a predetermined water-soluble cation in a standard sample including a known amount of the water-absorbing resin and creating a calibration curve indicating the relationship between the amount of the water-absorbing resin and the amount of the predetermined water-soluble cation in the standard sample on the basis of the obtained measurement result, B) a step for measuring the amount of the predetermined water-soluble cation in a measurement sample of the hygienic material, absorbent article, or intermediate product in the manufacturing process thereof, the measurement sample comprising a portion including the water-absorbing resin, and C) a step for calculating, through use of the calibration curved created in step A), the amount of the water-absorbing resin in the measurement sample from the amount of the predetermined water-soluble cation measured in step B). A measurement method in which step A) and step B) include measuring the amount of the predetermined water-soluble cation using an ion-selective electrode method, and include steps M1) and M2), where M1) is a step (pre-processing step) for immersing the sample in an aqueous solution including a total ionic strength adjusting agent, and M2) is a step for measuring the amount of the predetermined water-soluble cation in the pre-processed supernatant liquid obtained in step M1).Le problème décrit par la présente invention est de fournir un procédé aisé/sûr et hautement précis permettant la mesure du contenu d'une résine
