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pISSN : 1598-253X

한국도시환경학회지, Vol.21 no.1 (2021)
pp.13~20

DOI : 10.33768/ksue.2021.21.1.013

- Performance Test of Gas Sensors Measuring Air Pollutants of NO, NO2, SO2, CO and VOC -

Chunsang Lee

(Department of Environmental and Energy Engineering, Anyang University, Climate)

Kyoungchan Kim

(Department of Environmental and Energy Engineering, Anyang University, Climate)

Sangwoo Han

(Department of Environmental and Energy Engineering, Anyang University, Climate)

Hungsoo Joo

(Department of Environmental and Energy Engineering, Anyang University, Climate)

Kwonho Jeon

(Air Quality Research Division, National Institute of Environmental Research)

Kwangjoo Moon

(Air Quality Research Division, National Institute of Environmental Research)

Jinseok Han

(Department of Environmental and Energy Engineering, Anyang University, Climate)

본 연구의 목적은 가스 센서를 이용하여 상대적으로 적은 비용으로 배출원에 대한 실시간 감시 및 측정을 하기 위한 방법의 일환으로 센서 모니터링 시스템의 적용 가능성을 검토하는 것이다. 적용 가능성을 검토하기 위해 대기오염물질 측정 센서인 전기화학식센서(NO, NO2, SO2, CO), 광이온화센서(VOC)를 갖고 성능평가 실험을 실시하였다. 모든 센서 성능실험은 온도 25oC, 습도 50%에서 실시하였고 정확한 희석농도를 만들어 각 센서에 연속적으로 노출시켰다. VOCP 센서에서 가장 빠른 응답시간을 나타냈고, 대부분의 센서에서 양호한 정밀도와 재현성이 나타났다. 모든 센서에서 0.98 이상의 결정계수(R2) 값을 보여줬고, CO 센서를 제외한 나머지 센서에서 유사한 최소검출한계가 나타났다. 이러한 성능 평가 결과를 종합하여 센서 모니터링 시스템의 적용가능성을 검토하였다.

대기오염물질 측정을 위한 NO, NO2, SO2, CO, VOC 센서의 성능평가

Chunsang Lee

Kyoungchan Kim

Sangwoo Han

Hungsoo Joo

Kwonho Jeon

Kwangjoo Moon

Jinseok Han

The purpose of this study is to examine the applicability of sensor monitoring systems as part of a method for using gas sensors to conduct real-time monitoring and measurement of emission sources at a relatively low cost. To test the applicability, performance assessment experiments were conducted with electrochemical sensors (NO, NO2, SO2, CO), and photoionization sensors (VOC), which are air pollutant measurement sensors. All sensor performance tests were conducted at temperature of 25oC and humidity of 50% and the accurate dilution concentration was made and exposed to each sensor continuously. VOCP sensors showed the fastest response time, and most sensors showed good precision and reproducibility. All sensors showed a crystalline coefficient (R2) value of 0.98 or higher, and similar minimum detection limits were found in the remaining sensors except for CO sensors. The results of these performance evaluations are aggregated to review the applicability of sensor monitoring systems.

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