An Annular Denuder System (ADS) was used to study sampling errors of total PM10 and soluble ionic species concentrations determined by the high volume PM10 (HVPM10) sampler. Experimental results show that in the HVPM10 sampler, more alkaline glass fiber filters collect more sulfate and nitrate but less ammonium ion than quartz filters. However, total PM10 concentrations do not seem to depend on the types of filters. Artifact sulfate concentrations in glass fiber filters of the HVPM10 sampler are found to exceed those predicted by the Coutant's model. It is suggested that artifact sulfate and nitrate not only occur within filters but also in particle deposits. Chloride ion concentrations in the filters of the HVPM10 sampler are underestimated significantly due to evaporative loss of ammonium chloride.