What is a Volatile Organic Compound Pretreatment System

VOC Pretreatment System As the pre-treatment device of GC and CMMS, the system is equipped with:1 deep-cooling version/electronic cooling version preconcentrator, 1 autosampler, 1 high-precision static diluter, 1 automatic can cleaner. The system is equipped with   

1. Working Principle

Sampling canister(Suma canister) is cleaned and vacuumed with the support of automatic canister cleaner. After conveying to the sampling site and instantly sampling or supporting constant current sampling device for constant current sampling, the use of qualified gas bags to collect fixed source gases in high-precision static dilution instrument diluted to achieve the required qualified samples, samples in the automatic sampling device under the automatic transfer to the preconcentrator.

Pre-concentration Can effectively eliminate interference in the airCO2, O2, H2O, N2, etc. After removing impurities and concentration focusing treatment, to maximize the qualification of the target to be measured volatile organic compounds. Automatically transfer the results to GC or GMS. spacing:1px;font-size:12px">★Before analyzing the sample, the preconcentrator needs a high-precision static diluter to dilute the high concentration of standard gas into a low concentration of standard gas to make the standard curve for analysis.

2. Working Conditions

Working power supply:AC 220V±10%, 50Hz

Working Temperature?0~50℃ 

Relative Humidity ?≤95%

3. Technical Performance and Requirement

 1. Pre-Concentrator -Deep Cooling VersionSystemConforms to the current national standardHJ759-2015, for ambient air, indoor air, pollutant exhaust gas and other scenarios in the sample 117kinds VOCs,HJ1078-2019Standard Methods, the2019Monitoring of Ambient Air Volatile Organic Compounds in Prefecture-level and Above Cities测方案》以及美国环保局< (EPA)TO-15中的样品采集、分析前处理及标样配制等相关要求，可以很好应用于大气中的挥发性。 span style="font-family:Calibri;color:rgb(60, 56, 57);letter-spacing:0px;font-size:13px;">Organic compounds and sulfur-containing organic compounds in exhaust gas from stationary sources.

Pre-Concentrator™ lt;/span>-electronic cooling versionThe system complies with the current national standardHJ759-2023 for ambient air, indoor air, exhaust gas from pollutant sources, etc. The system can be used for a wide range of air quality control applications. The system complies with the current national standard HJ759-2023 for a wide range of environmental air, indoor air, pollutant exhaust, and other scenario samples. 65 VOCs.

▲自动清罐仪

2. Sampling Tank (Suma Tank)在自动清罐仪支持下得到清洗和被抽成真空状态，稀释仪具有标准气体及内标配制、样品稀释等功能；预浓缩仪可对采样罐或气袋采集的气体样品进行浓缩处理和进样，气体样品在经过浓缩前处理的过程中能

The Pre-Concentrator is capable of concentrating and feeding the gas samples collected from the sampling tank or gas bag.

4. Application range

Applicable to environmental monitoring stations, indoor environment, third-party testing organizations, scientific research institutions, semiconductor, new energy, biomedicine and related business units on the gas samples of volatile organic compounds in the collection and processing of pre-concentration processing system.