Development of a High Volume Surface Sampler for Pesticides in Floor Dust

摘要

A high volume surface sampler (HVS2) for the collection of house dust and the semivolatile organics (including pesticides) in house dust has been designed and tested. The sampler consists of an intake nozzle, cyclone, and filter. The position of the nozzle is regulated by the static pressure in the nozzle. The HVS2 operates at approximately 9.5 L/s (20 cfm) and can collect more than 2 g of floor dust from a rug in an average clean residence in less than 4 min. Over 95% of the sample is retained in the cyclone. Both house dust and a test dust were spiked with 10 or 20 ppm chlorpyrifos and dieldrin and 50 or 100 ppm diazinon. Virtually all the pesticide was retained in the cylcone or on the filter. Conventional vacuum cleaners, small hand-held vacuum cleaners, gloves, semi-sticky paper, and carpet squares were not satisfactory substitutes. A recommended sampling procedure for the use of the HVS2, based on the test experiences reported here, is provided.