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Nihon Eiseigaku Zasshi

Title:		[Measurement of Chemical Compounds in Indoor and Outdoor Air in Chiba City Using Diffusive Sampling Devices]
Author(s):		Sakamoto H; Uchiyama S; Kihara A; Tsutake T; Bekki K; Inaba Y; Nakagome H; Kunugita N;
Address:		National Institute of Public Health
Journal Title:		Nihon Eiseigaku Zasshi
Year:		2015
Volume:		70
Issue:		3
Page Number:		249 - 258
DOI:		10.1265/jjh.70.249
ISSN/ISBN:		1882-6482 (Electronic) 0021-5082 (Linking)
Abstract:		"OBJECTIVES: Indoor air quality (IAQ) is a major concern, because people on average spend the vast majority of their time indoors and they are repeatedly exposed to indoor air pollutants. In this study, to assess indoor air quality in Chiba City, gaseous chemical compounds were surveyed using four types of diffusive sampler. METHODS: Gaseous chemical compounds such as carbonyls, volatile organic compounds (VOC), acid gases, basic gases, and ozone were measured in indoor and outdoor air of 50 houses throughout Chiba City in winter and summer. Four types of diffusive sampler were used in this study: DSD-BPE/DNPH packed with 2,4-dinitrophenyl hydrazine and trans-1,2-bis(2-pyridyl)ethylene-coated silica for ozone and carbonyls; VOC-SD packed with Carboxen 564 particles for volatile organic compounds; DSD-TEA packed with triethanolamine-impregnated silica for acid gases; and DSD-NH3 packed with phosphoric acid-impregnated silica for basic gases. RESULTS: Almost all compounds in indoor air were detected at higher concentrations in summer than in winter. However, the nitrogen dioxide concentration in indoor air particularly increased only in winter, which well correlated with the formic acid concentration (correlation coefficient=0.974). The compound with the highest concentrations in indoor air was p-dichlorobenzene, with recorded levels of 13,000 mug m(-3) in summer and 1,100 mug m(-3) in winter in indoor air. CONCLUSIONS: p-Dichlorobenzene in summer and nitrogen dioxide in winter are detected at markedly high concentrations. Pollution control and continuous monitoring of IAQ are indispensable for human health"
Keywords:		"Air/*analysis Air Pollutants/*analysis Air Pollution, Indoor/*analysis Chlorobenzenes/analysis Environmental Monitoring/*methods Formates/analysis Gases Japan Nitrogen Dioxide/analysis Seasons;"
Notes:		"MedlineSakamoto, Hironari Uchiyama, Shigehisa Kihara, Akiko Tsutake, Toyoshige Bekki, Kanae Inaba, Yohei Nakagome, Hideki Kunugita, Naoki jpn Japan 2015/09/29 Nihon Eiseigaku Zasshi. 2015; 70(3):249-58. doi: 10.1265/jjh.70.249"