As people spend most of their time indoors, managing indoor air quality (IAQ) has become critical. However, current standard test methods for paints using undiluted solutions do not reflect actual construction practices where thinners are added. This study aims to investigate the effects of dilution ratios on TVOC and formaldehyde (HCHO) emissions. Ten types of paints were tested using a small chamber method under undiluted (Org.) and diluted (Dil. 1, Dil. 2) conditions based on manufacturers’ specifications. The results showed that HCHO emissions were not significantly affected by dilution. However, TVOC emission patterns were categorized into four groups. Notably, some oil-based paints showed an initial suppression followed by a reversal phenomenon where emissions exceeded the original solution after three days. These findings suggest that the current test standards may underestimate the actual risk, highlighting the need to revise the regulations to reflect real-use dilution conditions.

Abstract
1. 서 론
2. 연구 방법
    2.1 대상 시료
    2.2 시험방법 및 분석조건
3. 결과 및 고찰
    3.1 희석 비율에 따른 TVOC 방출 패턴 유형화
    3.2 희석 비율에 따른 폼알데하이드 방출 특성
4. 결 론
감사의 글
References

• 남궁다영(아주대학교 환경안전공학과, 한국화학융합시험연구원) | Da Yeong Namkung (Department of Environmental and Safety Engineering, Ajou University, Korea Testing & Research Institute)
• 이재영(아주대학교 환경안전공학과, 아주대학교 인공지능학과) | Jae Young Lee (Department of Environmental and Safety Engineering, Ajou University, Department of Artificial Intelligence, Ajou University) Corresponding author