| 摘要 |
<p>#CMT# #/CMT# The device has a positioning unit for positioning a sampling module (100) in a drilling. The module includes a piston (2) possessing a sampling chamber (20) that is provided with an access opening for underground water. A tube (1) closes the opening in a sealed manner. A displacement unit moves the tube with respect to the piston so as to cause relative sliding of the tube with respect to the piston between a closing position, in which the chamber is not in fluid communication with water and an open position, in which the chamber is in fluid communication with the water. #CMT# : #/CMT# An independent claim is also included for a method for sampling underground water in a drilling using a sampling device. #CMT#USE : #/CMT# Device i.e. multilevel static sampler, for sampling underground water in aquifer to be analyzed in a laboratory. #CMT#ADVANTAGE : #/CMT# The device samples the underground water in an easy and simple manner with a sampling period of 24 hours and with table cloth speed less than 1 meter per day, for ensuring better representability of multilevel samples in observation piezometer, while avoiding utilization of surface pumps or internal pumps. The device allows the removed samples of water into the sampling modules, detaches the modules and places the modules directly in icebox for preserving the samples during their transport towards laboratory for analysis, thus avoiding problems generated by transfer of samples in bottles and risk of loss of samples and volatilization of pollutants. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic sectional view of a sampling module of an underground water sampler. 1 : Tube 2 : Piston 13 : Sampling zone 20 : Sampling chamber 100 : Sampling module #CMT#POLYMERS : #/CMT# The piston is made of material such as PTFE, fluorinated ethylene propylene and perfluoroalkoxy.</p> |
