摘要：Adsorption of perfluorocarboxylic acids (PFCAs) with different fluorocarbon chain length (C4-C12) on 8 sorbents, including 3 anion exchange macroporous resins (D301R, D301T and D296), and 5 stationary phase sorbents of solidphase extraction (SPE) (Bond Elut NH2, Bond Elut SAX, Bond Elut C8, Bond Elut DEA and Waters Oasis WAX) were investigated through batch adsorption experiments. For adsorption of long fluorocarbon chain PFCAs (C8- C12), anion exchange macroporous resins (D301R and D301T), C8 and WAX SPE sorbent were more efficient than other sorbents. However, only D301R macroporous resin and WAX SPE sorbent had relative high adsorption capacities for short chain PFCAs (C4-C7). Methanol containing 0.1 mol/L of KOH was optimized as the eluting agent, while a 3-round eluting method was selected as the elution model. According the elution method, ideal recoveries of 87~120 % can be obtained for the target PFCAs.
