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Sampling device for large-volume water sample of semi-volatile organic compounds

A semi-volatile, sampling device technology, applied in the direction of sampling devices, test sample preparation, etc., to achieve the effect of simple operation, portability and compact structure

Active Publication Date: 2012-06-20
CSD IDEA BEIJING INST OF ENVIRONMENTAL INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The traditional collection of large-volume water bodies is affected by factors such as transportation, space, and pollution, and it is not easy to collect large-volume water from the field and bring it back to the laboratory for analysis

Method used

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  • Sampling device for large-volume water sample of semi-volatile organic compounds
  • Sampling device for large-volume water sample of semi-volatile organic compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Sampling of large volumes of organic chlorine pesticide semi-volatile organic compounds (such as DDT mirex, etc.) in a reservoir. The device is used to sample and enrich large-volume water samples to calculate the concentration of various organochlorine pesticides in a reservoir water.

[0024] Before and after the experiment, the experimental instruments and related tools must be cleaned with acetone, and PE gloves must be worn during the operation to prevent contamination; 6h treatment with opening), high temperature treatment at 300°C;

[0025] First of all, at the selected sampling point of the reservoir, the sampling water pipe is surrounded by barbed wire to prevent large suspended matter from blocking the pipe. After the device is connected according to the method provided in this specific embodiment, the parameters are set as follows: the total volume of collected water samples is 200 L, and the speed of the peristaltic pump 1 is adjusted to keep the water flow...

Embodiment 2

[0029] In-situ sampling of dioxin-like bulk water in a reservoir. The device is used to sample and enrich large-volume water samples to calculate the concentration of dioxins in the water body of a certain reservoir.

[0030] Before and after the experiment, the experimental instruments and related tools must be cleaned with acetone, and PE gloves must be worn during the operation to prevent contamination; 6h treatment with opening), high temperature treatment at 300°C;

[0031] First of all, at the selected sampling point of the reservoir, the sampling water pipe is surrounded by barbed wire to prevent large suspended matter from blocking the pipe. After the device is connected according to the method provided in this specific embodiment, the parameters are set as follows: the total volume of collected water samples is 220L, and the speed of the peristaltic pump 1 is adjusted to keep the water flow at about 0.1L / min.

[0032] Turn on the power of the peristaltic pump 1 to s...

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Abstract

The invention provides a sampling device for a large-volume water sample of semi-volatile organic compounds, belongs to the technical field of sampling of semi-volatile organic pollutants in a water body. The device comprises a peristaltic pump, a filter membrane tray, an adsorbing material sleeve and a flowmeter, wherein the peristaltic pump is used for sucking the water sample through a sampling tube and conveying the water sample to the filter membrane tray; the filter membrane tray is used for filtering the water sample sucked by the peristaltic pump and conveying the filtered water sample to the adsorbing material sleeve; the adsorbing material sleeve is used for adsorbing sol-state granules in the water sample through polyurethane foam, activated carbon or XAD2 resin which is arranged in the adsorbing material sleeve and is used for enriching; and the flowmeter is used for metering the volume of the sampled water sample. The sampling device has the characteristics of compact structure, simplicity in operation and convenience for carrying, can finish filtering, adsorption and sampling volume calculation of the water sample at one time during the sampling process so as to provide convenience for in-situ enriching of the large-volume water sample, and can be used for in-situ sampling of water samples of shallow lakes, rivers, reservoirs and other various water bodies.

Description

technical field [0001] The invention relates to a general water sample sampling device for semi-volatile organic compounds, which belongs to the technical field of sampling semi-volatile organic pollutants in water bodies. Background technique [0002] Semi-volatile organic compounds (SVOC) generally refer to organic compounds with a boiling point of 170-350°C and a vapor pressure of 0.1-10-7mmHg. Some of the semi-volatile organic compounds are a kind of organic chemical pollutants with high toxicity, persistence, easy accumulation in organisms and long-distance migration and deposition, and serious harm to the environment and human body. [0003] The water environment is one of the main places where semi-volatile organic compounds are enriched, including urban sewage, reservoirs, rivers, lakes and seas. For the investigation and research of natural background levels and pollution levels of reservoirs, rivers, lakes and seas, due to the low content of these semi-volatile or...

Claims

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Application Information

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IPC IPC(8): G01N1/14G01N1/34
Inventor 陆勇吴昌敏盛守祥
Owner CSD IDEA BEIJING INST OF ENVIRONMENTAL INNOVATION
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