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A passive sampling device for persistent organic pollutants

A passive sampling device, a technology for organic pollutants, applied in the sampling device and other directions, can solve problems such as the large influence of wind speed

Active Publication Date: 2016-01-20
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a passive sampling device for persistent organic pollutants. The present invention can solve the problem that the wind speed of the existing atmospheric passive sampling device has a great influence, and can separately collect persistent organic pollutants in gaseous state and particle state. It is more suitable for the current situation of high concentration of atmospheric particulate matter in China

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  • A passive sampling device for persistent organic pollutants
  • A passive sampling device for persistent organic pollutants
  • A passive sampling device for persistent organic pollutants

Examples

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Embodiment Construction

[0029] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0030] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0031] like image 3 As shown, the persistent organic pollutant passive sampling device of the present invention includes a body, a shield 4 and a sampling material placement bracket 5; wherein, the body includes an outer cover 1 and an inner cover 2; barrel. The inner cover 2 is sheathed in the cavity of the outer cover 1 , and a distance is provided between the inner cover 2 and the bottom and side walls of the outer cover 1 . like Figure 4 As shown, the tops of the inner cover 2 and the outer cover 1 are connected together by 8 steel columns 8, and the diameter of the steel columns 8 is 5 mm.

[0032] like figure 1 As shown, a plurality of evenly distributed micropores 91 with a diameter of 6 mm are arranged on the midd...

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Abstract

The invention discloses a driven sampling device of persistent organic pollutants. The driven sampling device comprises a body, a blocking cover and a sampling-material placing bracket, wherein the body comprises an outer cover and an inner cover; the inner cover is sheathed in a cavity body of the outer cover, and gaps are formed between the inner cover and the bottom part of the outer cover and between the inner cover and the side wall of the outer cover; the side wall of the outer cover is provided with a plurality of micropores; the side wall and the bottom part of the inner cover are respectively provided with a plurality of micropores; the sampling-material placing bracket is arranged in the cavity body of the inner cover and comprises an upper placing layer and a lower placing layer; the blocking cover is matched with the top part of the outer cover; and a fixed device is arranged on the blocking cover. The driven sampling device disclosed by the invention has the beneficial effects that firstly the influence of the wind speed on the sampling efficiency can be greatly reduced, so that the problem that the concentrations cannot be compared due to wind-speed difference when large-scale sampling is carried out is solved; and secondly, the organic pollutants distributed in a gaseous state and a particulate state can be sampled simultaneously, so that the driven sampling device is especially suitable for the condition with higher concentration of particulates in the air of China.

Description

technical field [0001] The invention relates to a passive sampling device for persistent organic pollutants, belonging to the technical field of atmospheric monitoring. Background technique [0002] Persistent organic pollutants (POPs) have long-term persistence, bioaccumulation, semi-volatility and high toxicity, and are currently a global environmental problem that has attracted international attention. The traditional method of sampling persistent organic pollutants, which occur in very low concentrations in the air, is with active high-flow samplers. However, the high-flow sampler is expensive, bulky, needs electric power to work, and has high requirements for operators. Coupled with harsh field conditions, its application in large-scale simultaneous sampling observations of POPs is limited to a certain extent. In recent years, atmospheric passive sampling technology has been widely used as the main means of atmospheric environmental scientific research in the region. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22
Inventor 高丽荣张芹张利飞刘立丹
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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