Long term passive volatile organic compound sampler system

Abstract

Disclosed herein is an apparatus having: a tube, a polydimethylsiloxane plug that divides the tube into an upper portion and a lower portion, and a volatile organic compound trapping device within the upper portion. The apparatus may be used by: positioning an open end of the lower portion into groundwater, equalizing air pressure between the lower portion and the upper portion using a canula, maintaining the open end in the groundwater for a period of time, removing the trapping device, and testing the trapping device for the presence of volatile organic compounds. The concentration of volatile organic compounds in the groundwater may be calculated from the concentration of volatile organic compounds in the trapping device. The apparatus may be reused by replacing the trapping device.

Dependencies are inferred from the claim text.