A Comparative Study on the Statutory and Technical Regulations for Controlling Indoor Volatile Organic Compounds in Taiwan and Japan

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Abstract
The objective of this paper was to offer a comparative analysis of currently implemented statutory and technical regulations in Taiwan and Japan for volatile organic compounds (VOC) in indoor atmospheres. The findings should help to manage indoor air quality (IAQ) based on public and occupational health considerations. The first part of the present study summarizes the Indoor Air Quality Management Act in Taiwan and related regulations for building materials. We further highlight that Taiwan became the second country in the world to enact an IAQ management law in 2011. In addition, the permissible exposure limits (PEL) are also addressed to recognize safe levels of VOC concentrations below which adverse health effects are not expected to occur in the workplace environment. In the second part of the paper, the statuses of statutory and voluntary regulations for IAQ issues in Japan are compiled from the official websites of the central ministries, including the Ministry of Education, Culture, Sports, Science and Technology, the Ministry of Land, Infrastructure, Transport and Tourism, and the Ministry of Health, Labor and Welfare. This analysis shows that both countries have adopted similar processes to establish the IAQ standard/guideline values and low-emission building materials, despite slight differences in their methods and central ministries. In contrast, the VOCs regulated by these regulations differ completely, with the exception of formaldehyde. Although the IAQ standards in Taiwan seem to be more stringent than those in Japan, Japan’s longer experience shows a diversity of management tools and regulations based on the guideline values.

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