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Device and method for analyzing SVOCs in water

A technology of analysis device and analysis method, applied in the direction of measurement device, analysis material, material separation, etc., can solve the problem of lack of online analysis and research of SVOCs

Pending Publication Date: 2021-10-22
HANGZHOU PUYU TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are few studies on the automatic online analysis of SVOCs in water by means of channel switching.

Method used

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  • Device and method for analyzing SVOCs in water
  • Device and method for analyzing SVOCs in water
  • Device and method for analyzing SVOCs in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Figure 1-2 Schematically provides a simplified structural diagram of the SVOCs analysis device in water according to the embodiment of the present invention, as Figure 1-2 As shown, the SVOCs analysis device in the water comprises:

[0036] A multi-way valve 11, a chromatographic column 21 and a detector 31, the ports of the multi-way valve 11 are connected to the chromatographic column 21 and the detector 31 in sequence;

[0037] An extraction unit 41, the extraction unit 41 is used to extract the SVOCs of the water sample, one end of the extraction unit 41 is respectively connected to the port of the multi-way valve 11 and the sampling tube 12, and the other end is connected to the port of the multi-way valve 11;

[0038] A sampling unit, such as a combination of a pump and a valve, the sampling unit is used to positively send the water sample into the extraction unit 41, and make the water sample forward and reverse repeatedly in the extraction unit 41 sports;

...

Embodiment 2

[0063] An application example of the SVOCs analysis device and method according to Embodiment 1 of the present invention.

[0064] In this application example, if Figure 1-2 As shown, the pump 71 adopts an automatically controlled syringe pump, and the syringe pump also has a waste discharge port; a container 81 is set between the pump 71 and the second switching module 62 as a water sample buffer; the first switching module 61 and the second switching module 62 respectively use The electromagnetic three-way valve, the multi-way valve 11 adopts a ten-way valve; the extraction unit 41 has a PDMS adsorption material; the cutting unit 51 has a hydrophobic material; the temperature control unit includes a heating module and a temperature control module, and the heating module is used for automation. The extraction unit 41 is heated automatically, and the temperature control module is used to automatically heat and cool the cutting unit 51; the chromatographic column 21 is an LTM ...

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Abstract

The invention provides a device and a method for analyzing SVOCs in water, the device for analyzing SVOCs in water comprises a multi-way valve, a chromatographic column and an extraction unit, one end of the extraction unit is respectively communicated with a port of the multi-way valve and a sample introduction pipe, and the other end of the extraction unit is communicated with the port of the multi-way valve; and the device further comprises a sampling unit which is used for forwards feeding a water sample into the extraction unit and enabling the water sample to do forward and reverse reciprocating motion in the extraction unit. The two ends of the cutting unit communicate with ports of the multi-way valve correspondingly, and a hydrophobic material is arranged in the cutting unit. When the multi-way valve is switched to the first state, carrier gas enters the extraction unit through the multi-way valve and is discharged from the multi-way valve, and when the multi-way valve is switched to the second state, the carrier gas sequentially enters the extraction unit and the cutting unit through the multi-way valve and is discharged from the multi-way valve; and the temperature control unit is used for heating the extraction unit and refrigerating and heating the cutting unit. The method has the advantages of accurate analysis and the like.

Description

technical field [0001] The invention relates to the field of water quality analysis, in particular to a device and method for analyzing SVOCs in water. Background technique [0002] The detection of organic pollutants in my country's surface water and even water sources is very common, and most of the pollutants come from industrial "three wastes", pesticides in agriculture, and man-made pollution mainly from domestic sewage. In 2002, my country promulgated the "Environmental Quality Standards for Surface Water" (GB3838-2002), which stipulated 109 pollutants, including 69 organic indicators such as volatile organic pollutants, semi-volatile organic pollutants, pesticides, and petroleum hydrocarbons. ; In 2006, the "Drinking Water Sanitation Standard" (GB-5749-2006) was promulgated, which increased the organic index to 48 items. Among this series of organic pollutants, semi-volatile organic compounds (SVOCs) have brought great challenges to the pretreatment of samples due to ...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/72G01N30/88
CPCG01N30/06G01N30/72G01N30/88
Inventor 马乔朱锋段炼吕明珠刘立鹏
Owner HANGZHOU PUYU TECH DEV CO LTD
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