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Environ Geochem Health

Title:		Assessment of cyclic volatile methyl siloxanes (CVMSs) in indoor dust from different micro-environments in northern and central Vietnam
Author(s):		Hoang AQ; Trinh HT; Nguyen HMN; Nguyen TQ; Nguyen TX; Duc TV; Nguyen TT; Do TQ; Minh TB; Tran TM;
Address:		"Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hanoi, 11000, Vietnam. Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam. Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam. Ha Tinh University, Cam Vinh Commune, Cam Xuyen District, Ha Tinh, 45000, Vietnam. Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 11300, Vietnam. Environmental and Life Science Research Laboratory, Research of Organic Matter Group (ROOM), Thuyloi University, 175 Tay Son, Dong Da, Hanoi, 11500, Vietnam. Institute of Geography, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 11300, Vietnam. Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hanoi, 11000, Vietnam. manhtri0908@gmail.com"
Journal Title:		Environ Geochem Health
Year:		2023
Volume:		20220527
Issue:		5
Page Number:		1711 - 1722
DOI:		10.1007/s10653-022-01298-6
ISSN/ISBN:		1573-2983 (Electronic) 0269-4042 (Linking)
Abstract:		"Comprehensive studies on emerging contaminants like volatile methyl siloxanes in settled dust from different micro-environments are still limited. In this study, concentrations and distribution of cyclic volatile methyl siloxanes (CVMSs) including D3, D4, D5, and D6 were examined in indoor dust samples collected from various micro-environments in northern and central Vietnam. Concentrations of total CVMSs in the dust samples ranged from 86.0 to 5890 (median 755) ng/g and decreased in the order: waste processing workshops (median 1560; range 329-5890) > common houses (650; 115-1680) > university classrooms (480; 86.0-1540) > vehicle repair shops (295; 126-1950) ng/g. This observation suggests that informal waste processing activities are sources of CVMSs. Among the studied CVMSs, D5 was the most predominant compound (41 +/- 14%), followed by D6 (26 +/- 13%), D4 (23 +/- 12%), and D3 (11 +/- 11%). Moderate positive correlations between D3/D4, D4/D5, and D5/D6 were found. Median daily intake doses of D3, D4, D5, and D6 through dust ingestion were 0.016, 0.051, 0.11, and 0.054 ng/kg/d, respectively, which were comparable to water consumption and markedly lower than the air inhalation pathway"
Keywords:		"Humans *Air Pollution, Indoor/statistics & numerical data Dust/analysis *Environmental Monitoring *Siloxanes/analysis Vietnam Air Pollutants Cyclic volatile methyl siloxanes Human exposure Settled dust Urban area Waste processing area;"
Notes:		"MedlineHoang, Anh Quoc Trinh, Hue Thi Nguyen, Ha My Nu Nguyen, Trung Quang Nguyen, Thi Xuyen Duc, Toan Vu Nguyen, Thi Thao Do, Trung Quang Minh, Tu Binh Tran, Tri Manh eng Netherlands 2022/05/28 Environ Geochem Health. 2023 May; 45(5):1711-1722. doi: 10.1007/s10653-022-01298-6. Epub 2022 May 27"