|
Area
|
Sampling time
|
Number of public place
|
Dust
|
Bacteria
|
Fungi
|
References
|
|---|
|
Sample number
|
Passing rateb (%)
|
Sample number
|
Passing ratec (%)
|
Sample number
|
Passing rated (%)
|
|---|
|
Hebei (Shijiazhuang)
|
2010
|
22
|
110
|
70.0
|
110
|
88.2
|
110
|
80.0
|
[33]
|
|
Hunan
|
2010
|
24
|
24
|
58.3
|
24
|
75.0
|
24
|
100.0
|
[34]
|
|
Pearl River Delta
|
2009–2010
|
25
|
170
|
68.2
|
170
|
99.4
|
170
|
100.0
|
[35]
|
|
Guangdong (Zhongshan)
|
2009
|
18
|
183
|
95.6
|
183
|
94.5
|
183
|
88.0
|
[36]
|
|
Fujian (Xiamen)
|
2009
|
43
|
398
|
98.5
|
398
|
97.2
|
398
|
95.0
|
[37]
|
|
Zhejiang
|
2009
|
240
|
237
|
75.5
|
236
|
94.9
|
236
|
70.8
|
[38]
|
|
Jiangsu
|
2009
|
97
|
312
|
67.3
|
458
|
90.6
|
456
|
89.7
|
[39]
|
|
Liaoning (Dalian)
|
2008
|
14
|
14
|
64.3
|
69
|
97.1
|
69
|
97.1
|
[40]
|
|
Beijing
|
2008
|
12
|
56
|
67.9
|
56
|
76.8
|
56
|
53.6
|
[41]
|
|
Hunan (Changsha)
|
2008
|
15
|
61
|
50.8
|
61
|
50.8
|
61
|
59.0
|
[41]
|
|
Tianjin
|
2006
|
16
|
–
|
–
|
113
|
89.4
|
113
|
71.7
|
[42]
|
|
Henan (Jiaozuo)
|
2006
|
16
|
96
|
59.4
|
96
|
47.9
|
96
|
41.7
|
[43]
|
- aEvaluated based on the “Hygienic norm for central air-conditioning and ventilation systems in public places” of China
- bPercentage of samples with dust concentrations ≤ 20 g/m2
- cPercentage of samples with bacteria concentrations ≤ 100 cfu/cm2
- dPercentage of samples with fungi concentrations ≤ 100 cfu/cm2