Handheld soil pore water sampler

Abstract

The invention provides a handheld soil pore water sampler, which consists of an overground unit and an underground unit. The overground unit consists of a manual vacuum generator and a sampler; and the underground unit consists of a filter. The handheld soil pore water sampler can make the vacuum generator generate vacuum without electricity manually on site, and is particularly suitable for field operation; the vacuum generator, the sampler and the filter are combined, so that one-time sampling can be finished; the next sampling can be performed only by replacing the sampler, and the soil pore water sampler is convenient to operate; and a sample is not contacted with an overground negative pressure generation device in the whole sampling process, so that the risk that the water quality of the sample is polluted is avoided, and detection authenticity is ensured. The soil pore water sampler has a simple structure, small volume and low cost, is easy to manufacture, is labor-saving during operation, and is convenient to popularize.

Description

technical field [0001] The invention relates to a hand-held soil pore water sampler, which is suitable for sampling soil pore water in marsh wetlands. Background technique [0002] The commonly used soil pore water sampler is composed of an aboveground negative pressure generating device, an underground filtering device, a sampling bottle, a connecting pipe and the like. According to the difference of the driving unit of the above-ground negative pressure generating device, the soil pore water sampler is divided into two types: manual drive and electric drive. Although the electric-driven soil pore water sampler can generate sufficient negative pressure, it has high requirements on site conditions, not only requires power supply, but also cumbersome to operate; and the impact of mud, which is not conducive to the safety of mechanical load-bearing and electric power use, so it is not suitable for field work environments, and it is difficult to popularize and use; although th...

AI Technical Summary

Problems solved by technology

Although the electric-driven soil pore water sampler can generate sufficient negative pressure, it has high requirements on site conditions, not only requires power supply, but also cumbersome to operate; and the impact of mud, which is not conducive to the safety of mechanical load-bearing and electric power use, so it is not suitable for field work environments, and it is difficult to popularize and use; although the human-driven soil sampler overcomes the field restrictions of electric drive, it is generally difficult to achieve sufficient due to laborious Negative pressure reduces the sampling volume, and it is even difficult to extract water samples from the filter with a large buried depth, and the sampling cannot be completed

At the same time, because there is not enough equipment to ensure that the sample is always in a negative pressure state, the quality of the sample will also be affected

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