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Analysis device and method for condensation collection and determination of soluble ions in air

An analysis device and soluble technology, applied in the direction of measuring devices, analysis materials, sampling devices, etc., can solve the problems of collection results impact, environmental pollution, cumbersomeness, etc.

Pending Publication Date: 2021-05-11
杭州乐载科学仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional atmospheric sampling method is currently mainly the solution absorption method. During the collection, it is necessary to prepare a suitable absorption liquid according to the unused sampling objects. Liquid will seriously affect the absorption efficiency and have a serious impact on the collection results
In addition, part of the absorption liquid uses organic solvents, which is easy to pollute the environment and is not conducive to environmental protection.

Method used

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  • Analysis device and method for condensation collection and determination of soluble ions in air
  • Analysis device and method for condensation collection and determination of soluble ions in air
  • Analysis device and method for condensation collection and determination of soluble ions in air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: Figure 4 It is the total content figure in the air of 5 kinds of anions collected in different time in embodiment 1, the collection and determination of 5 kinds of soluble anions in the atmosphere;

[0057] Collection conditions: sampling flow rate 1L / min, sampling time 1-5h, condensation temperature -5°C;

[0058] Chromatographic conditions: chromatographic column: Dionex IonPacAS11-HC-4μm analytical column 17, suppressor 18: AnionsuppressorASRS-30004mm suppressor 18, DP pump 14 flow rate: 1.0mL / min, column temperature: 30°C, eluent concentration: KOH0- 8min: 1mmol; 8-18min: 1-5mmol; 18-38min: 5-25mmol; 38-40min: 1mmol.

Embodiment 2

[0059] Example 2: Figure 5 It is the ion chromatogram of 3 kinds of cations in the air in embodiment 2; The collection and determination of soluble 3 kinds of soluble cations in the atmosphere.

[0060] Collection conditions: sampling flow rate 1L / min, sampling time 2h, condensation temperature -5°C;

[0061] Chromatographic conditions: Dionex IonPac CS17 analytical column 17, WLK-8C 4mm suppressor 18, DP pump 14 Flow rate: 1.0mL / min, column temperature: 30°C, eluent concentration: methanesulfonic acid isocratic 5mmol.

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Abstract

The invention discloses an analysis device and method for condensation collection and determination of soluble ions in air, the device comprises a condensation collection device and a chromatographic analysis device, the condensation collection device comprises an atmosphere sampler, a gas buffer connected to the atmosphere sampler, a cold trap connected to the gas buffer, and a semiconductor condenser connected to the cold trap; a condensation collecting pipe is arranged in the cold trap and provided with a gas outlet and a gas inlet, and the gas outlet is connected with the gas buffer. According to the method, the sample is collected by a method of directly condensing air, so that the tedious steps of selecting and preparing absorption liquid in the earlier stage of collection are reduced, the collection process is optimized, the workload in the earlier stage of collection is reduced, environmental protection and reagent saving are facilitated, the sample is rapidly and accurately detected and analyzed through the combined ion chromatography, and through combined ion chromatography analysis, the analysis method is low in detection limit, high in accuracy, efficient, convenient and capable of detecting multiple ions at the same time, and the detection and analysis efficiency of the sample is greatly improved.

Description

technical field [0001] The invention relates to a collection and analysis method for collecting common soluble ions in air by condensation method and combining with ion chromatography to determine the total content, that is, an analysis device and method for collecting and measuring soluble ions in air by condensation method. Background technique [0002] Atmospheric pollution has always attracted people's attention, and air pollutants have always been a hot issue in environmental issues. The determination of ion content in the atmosphere plays an important role in understanding the distribution and source of atmospheric particulate matter and the impact of environmental pollution, and plays a guiding role in the prevention and control of environmental pollution. The traditional atmospheric sampling method is currently mainly the solution absorption method. During the collection, it is necessary to prepare a suitable absorption liquid according to the unused sampling objects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22G01N30/02
CPCG01N1/2273G01N30/02G01N2001/2282
Inventor 虞佐嗣朱岩
Owner 杭州乐载科学仪器有限公司