The device multinu00cdvel, system and method of collecting samples of fluu00cddo pores in the soil and rocks

摘要

The device multinu00cdvel, system and method of collecting samples of pore fluid in soils and rocks, the present invention describes a device multinivel for sampling in field conditions of pore fluid phases gaseous, liquid or mixed, in soils and rocks.The device can be placed in the interior of monitoring wells for the purpose of studies of soil and groundwater contamination, as well as to ambientau00eds several studies that involve the collection and analysis of pore fluid.The device comprises a central tube, around which are installed sampling tubes that extend continuously from the surface of the ground up to a specific depth within a monitoring well.The ends of each sampling tube in depth are coated by a sampling filter, to avoid the obstruction of the tubes of sampling by aggregates of soils or rocks. The sampling filter, in turn, is protected in the top and bottom by devices in the form of a ring, to avoid mechanical damage to its structure during its insertion into the well.The present invention describes, in addition, a system for collecting water samples, for example, which comprises a circuit with a three-way valve, a needle of the syringe extraction, a collector, a soft hose or tube, a container and a piercing termination For this system, the collection of the aqueous solution takes place by suction.Still, it is revealed by the invention of a method of sample collection and removal of stagnant water, which are carried out in closed circuit and drive a volume of not more than one tenth of a litre, which prevents the operator exposure to harmful agents.