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Automatic quantitative sampler for volatile organic matter in water

A volatile organic compound, quantitative sampling technology, applied in the direction of sampling device, etc., to achieve the effect of avoiding the reduction of accuracy

Pending Publication Date: 2019-11-08
SINOGREEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the field of online monitoring and detection of water pollution, the existing sampling technology is only for heavy metals, inorganic substances or organic substances with low volatility. This sampling technology does not need to consider the impact of the volatilization loss of samples in the sampling stage on the accuracy of the final calibration.

Method used

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  • Automatic quantitative sampler for volatile organic matter in water

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Embodiment Construction

[0013] Such as figure 1 Shown, the automatic quantitative sampler of water quality volatile organic compound of the present invention comprises headspace bottle 1, nine hole valve 2, purge pipe 3 and peristaltic pump 4, and described headspace bottle 1 and purge pipe 3 are all connected with nine holes The valve 2 is connected, the peristaltic pump 4 is connected to the purge pipe 3, and the calibration medium in the headspace bottle 1 is sucked into the purge pipe 3 through the peristaltic pump 4, and the first liquid level is set in the purge pipe 3 The sensor 5 and the second liquid level sensor 6, the first liquid level sensor 5 is located above the second liquid level sensor 6, the first liquid level sensor 5 is used to calibrate the volume of the medium, and the second liquid level sensor 6 is used as the super liquid level For alarming, the nine-hole valve 2 is also connected with a nitrogen source 7, and the nitrogen source 7 communicates with the purge pipe 3 through ...

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Abstract

The invention provides an automatic quantitative sampler for volatile organic matter in water, and belongs to the technical field of environmental detection. According to the automatic quantitative sampler for the volatile organic matter in water, sampling calibration and sample introduction are automatically conducted in a closed environment, so that the loss in the calibration sampling stage isreduced. According to the scheme, sampling calibration and sample introduction are automatically conducted in the closed environment, so that the loss in the calibration sampling stage is reduced; a headspace bottle and a blowing pipe are both communicated with a nine-hole valve, a peristaltic pump is connected to the blowing pipe, a calibration medium in the headspace bottle is sucked into the blowing pipe through the peristaltic pump, a first liquid level sensor is located above a second liquid level sensor, the first liquid level sensor is used for calibrating the volume of the medium, andthe second liquid level sensor is used for carrying out super-high liquid level alarm. The sampler is applicable to the field of sampling of the volatile organic matter in water.

Description

technical field [0001] The invention relates to an automatic quantitative sampler for water quality volatile organic compounds, which belongs to the technical field of environmental protection detection. Background technique [0002] In the field of online monitoring and detection of water pollution, the existing sampling technology is only for heavy metals, inorganic substances or organic substances with low volatility. This sampling technology does not need to consider the impact of the volatilization loss of samples in the sampling stage on the accuracy of the final calibration. [0003] For volatile organic compounds, the volatilization loss of target substances in the sampling and calibration stage needs to be comprehensively controlled from the aspects of temperature, air exposure time and area. Contents of the invention [0004] The invention overcomes the disadvantages of the prior art, and provides an automatic quantitative sampler for volatile organic compounds i...

Claims

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Application Information

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IPC IPC(8): G01N1/14
CPCG01N1/14
Inventor 闫兴钰白慧宾张利军张宁吕子啸唐艳平白惠峰
Owner SINOGREEN ENVIRONMENTAL PROTECTION SCI & TECH
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