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8624994 
Journal Article 
Characteristics of phthalates in the indoor air of computer classrooms 
Chang, FH; Chiu, CFU 
2014 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
Chemical Publishing Co. 
26 
19 
6562-6566 
English 
We evaluated the airborne phthalate concentrations inside and outside of two computer classrooms and one office located on a Taiwanese college campus. The four phthalates with the highest median concentrations in indoor air were diisobutyl phthalate (DIBP, 2012.5 ng/m3), di-n-butyl phthalate (DBP, 329.4 ng/m3), di-2-ethylhexyl phthalate (DEHP, 167.6 ng/m3) and diethyl phthalate (DEP, 149.6 ng/m3). Only DBP was detected in the outdoor air, with a median concentration of 174.3 ng/m3. The reference outdoor DBP concentrations were approximately 3-100 times lower than the present indoor DBP concentration results. This strongly indicates that the emission sources were present in the indoor environment. Furthermore,when personal computers were turned on, the concentrations of DEP, DBP, DIBP and DEHP in the indoor air increased and DEHP was a note worthy characteristic phthalate. Opening the doors and windows immediately after entering a computer classroom and decreasing the indoor particle concentrations are both suggested to reduce the exposure of users to DEHP. © 2014, Chemical Publishing Co. All rights reserved. 
Computer classroom; Di-2-ethylhexyl phthalate; Diisobutyl phthalate; Indoor; Phthalates