PARTİKÜLER MADDE VE KARBONDİOKSİT İÇİN İÇ ORTAM HAVA KALİTESİ İNDEKSİ (İHKİ) HESAPLAMASI: OKUL ÖRNEĞİ / CALCULATION OF INDOOR AIR QUALITY INDEX (IAQI) FOR PARTICULATE MATTER AND CARBONDIOXIDE: A SCHOOL SAMPLE

Abstract

Çocukların vakitlerinin büyük bir bölümünü geçirdikleri okul iç ortam havasından etkilenimleri ve sonuçları konusunda hassasiyet göstermemiz önemlidir. Bu çalışmada bazı okullarda iç ortam hava kalitesini değerlendirmek ve bununla ilgili projelerde kullanmak için İç Ortam Hava Kalitesi İndeksi (İHKİ) geliştirmek amaçlanmıştır. 1-31 Ekim 2018 tarihleri arasında Kütahya ilinde yer alan okullarda yapılan kesitsel bir çalışmadır. Kırsal ve kentsel bölgelerden seçilen okullarda, 5 bina ve 42 sınıf iç ortamında sıcaklık, nem, PM2.5 ve PM10 ve CO2 ölçümleri yapılmıştır. İHKİ; PM2.5, PM10 ve CO2 değerlerinin DSÖ kriterlerine bölünüp aritmetik ortalaması alınarak hesaplandı. Sıcaklık ve nem ölçümleri normal değerler arasında olduğundan hesaplamaya katılmadı. İHKİ yükseldikçe İHK kötü olarak yorumlanmaktadır. Ölçümsel verilerin değerlendirmesinde ortalama, ortanca ve standart sapma değerleri, ilişki için Spearman korelasyon analizi kullanıldı. İHKİ ortalaması 4,85 ± 1,63 idi. İHKİ kentsel bölgede yer alan okulda kırsal alana göre daha kötü saptandı (p=0,024). İHKİ ile sınıfların hacimleri (metreküpü) arasında korelasyon bulunamazken (r=0,156 - p=0,331), sınıf mevcudu arttıkça İHKİ’nin kötüleştiği (r=0,384 - p=0,013) saptandı. Çalışmamızda İHKİ değeri, kentsel bölgede ve mevcudu fazla olan sınıflarda daha yüksek olarak bulundu. Çalışmamızda iç ortam havasındaki PM ve CO2 değerleri kullanılarak İHKİ hesabı yapıldığından, farklı iç ortamlarda biyolojik ve kimyasal kirletici parametrelerin dahil edilerek hesaplama yapılmasının daha yararlı olacağı söylenebilir.

Keywords

• Hava kalitesi,iç ortam,partiküler madde,karbondioksit

CALCULATION OF INDOOR AIR QUALITY INDEX (IAQI) FOR PARTICULATE MATTER AND CARBONDIOXIDE: A SCHOOL SAMPLE

Abstract

It is important for us to be sensitive about the effects and consequences of the school indoor air where children spend most of their time. In this study, it was aimed to develop Indoor Air Quality Index (IAQI) to evaluate indoor air quality in some schools and to use in related projects. This is a cross-sectional study conducted in schools in Kütahya province between 1-31 October 2018. In schools selected from rural and urban areas, temperature, humidity, PM2.5, PM10 and CO2 measurements were calculated in 5 buildings and 42 classrooms indoors. The IAQI was calculated by dividing PM2.5, PM10 and CO2 values by WHO criteria and taking the arithmetic average. Since temperature and humidity measurements are between normal values, they were not included in the calculation. As IAQI increases, indoor air quality is interpreted as bad. Average, median and standard deviation values were used in the evaluation of the measurement data and Spearman correlation analysis was used for the relationship. The average of the IAQI was 4.85±1.63. IAQI was found to be worse in the school located in the urban area, than the rural area (p=0.024). While there was no correlation between IAQI and volumes (cubic meters) of classrooms (r=0.156-p=0.331), it was found that the IAQI worsened as the class size increased (r=0.384-p=0.013). In our study, the IAQI value was higher in the urban area and in crowded classes. In our study, since the calculation of IAQI is made by using PM and CO2 values in indoor air, it can be said that it will be more beneficial to calculate by including biological and chemical pollutant parameters in different indoor environments.  

Keywords

• Air quality,indoor,particulate matter,carbondioxide

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