Indoor Air Pollution and Its Control in China

Table 3 Indoor concentrations of benzene, toluene, xylenes, and TVOC in recently renovated residences in China^a [10]

Pollutant	Sample number	Concentration (BTX: μg/m³; TVOC: mg/m³)
Pollutant	Sample number	Mean ± SD	Range
Benzene	843	124.04 ± 272.60	0.18–4,284.20
Toluene	901	258.90 ± 671.98	0.04–9,093.70
Xylenes	958	189.68 ± 561.16	0.05–10,413.70
TVOC	982	2.18 ± 12.94	0.005–394.44

^aSampling area: Beijing, Tianjin, Shanghai, Dalian, Shizuishan, Pingliang, Zhuhai, Changchun, and Chongqing; sampling time: May 2002 to November 2004; time since renovation: <12 months