Specific sarption of low quantities of Zn in eight gleysolic C horizons in Quebec soils was studied in dilute Cacl2solutions. Initial Zn concentrations were between 5 and 30 ppm. The range of specific Zn sorbed calculated as percentages of Zn added ware very high to moderately high indicating a high affinity sarption for Zn of the sorbed complex surface. Specific Zn sarption was found to agree with the Freundlich and Langmuir isotherms over a large range of concentrations.