Seasonal variation of airborne phthalates in classroom and dormitory, and its exposure assessment in college students

Phthalates in Glass Window Films of Chinese University Dormitories and Their Associations with Indoor Decorating Materials and Personal Care Products

“…Fourteen phthalate esters were detected (Table 3); detection rates ranged from 2% to 100%, and the median concentrations ranged from nd (not detected) to 3.53 × 10 2 µg/m 2 . The most predominant phthalates in the dormitory window film samples were DnBP, DCHP and DEHP, and there are substantially fewer studies on phthalates in window films than on phthalates in house air and dust [34][35][36][37][38][39][40][41], which is similar to the case for previous study results on baby rooms and university buildings in China [42,43]. However, the median concentrations of DnBP and DEHP (1.75 × 10 2 µg/m 2 and 3.14 × 10 2 µg/m 2 , respectively) in this study were significantly higher than those in baby rooms (85.3 µg/m 2 and 48.2 µg/m 2 , respectively) and university buildings (winter: 1.5 µg/m 2 and 7.6 µg/m 2 , respectively; summer: 1.3 µg/m 2 and 3.6 µg/m 2 , respectively).…”

Field and intervention study on indoor environment in professional classrooms

“…Many previous studies have analyzed VOC components in ordinary classrooms. For example, in the condition of natural ventilation [26,33], in the condition of mechanical ventilation [34,35], in the above two ventilation modes [36,37], the utilization of air purifiers [38], and in the condition of heating [39]. Most of these studies were mainly conducted in summer or winter, and ordinary classrooms were selected as the study site; multiple classrooms were monitored simultaneously to obtain the components of VOCs, while the detection interval was longer, usually before and after class.…”