Method for preparing porous adsorbent particles, a porous adsorbent particle and sampling device, and use thereof

A method for preparing porous adsorbent particles, comprising

• i) providing a solution of poly(2,6-diphenyl-p-phenylene oxide) in an organic solvent medium;
• ii) bringing a droplet of said solution in a state wherein it is held aloft, without mechanical support via any physical contact;
• iii) evaporating said organic solvent medium while maintaining said solution in said state at least until the solution is converted into particles that are in semi-solid or solid state.