11.45 Indoor AQ monitoring of central London Schools and Lessons Learnt.pdf

1. Indoor Air Quality
Monitoring in
Central London
Schools and
Lessons Learnt
Presented by Lauren Nixon
Graduate Air Quality Consultant, WSP

2. INTRODUCTION
Why? How?
Findings Lessons learnt

3. 3
of state primary and secondary schools
in London were in areas that exceeded
WHO limits, compared with 24% outside
of London.”
“98%
Why?

4. MONITORING STRATEGY
Diffusion tube in classroom (@Gradko)
Zephyr indicative low-cost sensor (@EarthSense)
How?

5. How?

6. DIFFUSION TUBE RESULTS
0
5
10
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
NO
2
concentration
(µg/m
3
)
School
Comparison of NO2 Concentrations Outside and Inside Central London Schools
Lobby Classroom Rear outside Front outside
Findings

7. DIFFUSION TUBE RESULTS
0
5
10
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
NO
2
concentration
(µg/m
3
)
School
Comparison of NO2 Concentrations Outside and Inside Central London Schools
Lobby Classroom Rear outside Front outside
Findings

8. ZEPHYR RESULTS
Findings
0
5
10
15
20
25
0 4 8 12 16 20 24
Hourly
Mean
NO
2
mass
concentration
(µg/m
3
)
Hour
Weekday and Weekend Average External NO2 Concentrations
Weekday
Weekend
0
2
4
6
8
10
12
14
16
18
0 4 8 12 16 20 24
Hourly
Mean
NO
2
mass
concentration
(µg/m
3
)
Hour
Weekday and Weekend Average Internal NO2 Concentrations
Weekday
Weekend

9. 0
2
4
6
8
10
12
0 4 8 12 16 20 24
Hourly
Mean
PM
2.5
mass
concentration
(µg/m
3
)
Hour
Weekday and Weekend Average External PM2.5 Concentrations
Weekday
Weekend
0
1
2
3
4
5
6
7
8
0 4 8 12 16 20 24
Hourly
Mean
PM
2.5
mass
concentration
(µg/m
3
)
Hour
Weekday and Weekend Average Internal PM2.5 Concentrations
Weekday
Weekend

10. LESSONS LEARNT
 School and teacher engagement
 Technical challenges
 Stakeholders
 Future considerations