PROBLEM TO BE SOLVED: To provide an adsorbent which effectively adsorbs hydrogen sulfide which causes halitosis, in contrast to a conventional technique where hydrotalcite containing Mg as a divalent metal and Al as a trivalent metal had been proposed, which however had problems that this hydrotalcite needed a heat treatment such that it lost a layer structure after synthesis and that its adsorption capacity for hydrogen sulfide decreased by the presence of moisture.SOLUTION: The adsorbent comprises hydrotalcite having a structure represented by formula (2), and adsorbs a volatile sulfur compound in a liquid phase: [Zn2+1-xAl3+x(OH)2][CO32-X/2 mH2O] (2), where 0
