Novel passive sampling device for persistent organic pollutants

Abstract

The invention belongs to the technical field of sampling devices, and particularly relates to a novel passive sampling device for persistent organic pollutants. The sampling device comprises a sampling device body, a bottom plate is mounted on the front surface of the sampling device body, and two storage cavities communicated with each other are fixedly arranged in the sampling device body. Fixing pipes are symmetrically mounted on the upper surface of the sampling device body; a detection value is transmitted to a central controller through a first transmission module, the central controller determines whether the detection value is consistent with a preset value or not, if not, the central controller is in signal connection with a micro air pump through a second transmission module, and the micro air pump is started through cooperation of the three modules. An air suction pipe of the micro air suction pump is communicated with one of the fixed pipes, so that air in the two storage cavities is pumped out to ensure that the interiors of the two storage cavities are clean, the valve is closed, related data can be displayed through an operation screen, later samples are prevented from being polluted, and intelligent use is achieved.

Description

technical field [0001] The invention belongs to the technical field of sampling devices, in particular to a novel passive sampling device for persistent organic pollutants. Background technique [0002] Persistent organic pollutants refer to chemical substances synthesized by humans that can persist in the environment, accumulate through the biological food chain, and cause harmful effects on human health. It has four characteristics: high toxicity, persistence, bioaccumulation, long-distance Migration, natural or synthetic organic pollutants that pose serious hazards to human health and the environment, require sampling devices for later detection of persistent organic pollutants. [0003] There are following problems in existing technology: [0004] 1. When the existing passive sampling device for persistent organic pollutants samples, it is impossible to judge whether there are samples from the previous sampling left inside it, which is not intelligent enough, and it is ...

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Problems solved by technology

[0004] 1. When the existing passive sampling device for persistent organic pollutants samples, it is impossible to judge whether there are samples from the previous sampling left inside it, which is not intelligent enough, and it is easy to pollute the later samples;

[0005] 2. The existing passive sampling device for persistent organic pollutants is not equipped with a heat insulation device, and the heat insulation effect is not good, which not only easily affects the use of the device, but also affects the state of the later sample and the later detection data;

[0006] 3. Since the air inlet pipe and the air outlet pipe are fixed with the device itself and have no telescopic function, the device occupies a large space when placed and has no anti-slip effect, which increases the chance of the device toppling over

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