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Heritage Science

Table 4 Concentration of air pollutants measured in Padua in different locations and expressed as hourly grand means, for gaseous pollutants, and daily grand means, for PM10.

From: Trachyte weathering in the urban built environment related to air quality

Measurement station

CO

(mg/m3)

NO

(µg/m3)

NO2

(µg/m3)

Σ NOx

(µg/m3)

SO2

(µg/m3)

O3

(µg/m3)

PM10

(µg/m3)

As

(ng/m3)

Cd

(ng/m3)

Ni

(ng/m3)

Pb

(ng/m3)

C6H6

(µg/m3)

C20H12

(ng/m3)

 

PM 10 composition

Background

 Whole record

0.7

29.9

42.1

88.4

2.5

52.5

43.0

1.4

0.9

3.4

17.7

2.1

1.3

 Last 5 years (2011–2015)

0.6

23.0

34.8

69.6

1.6

51.7

39.3

0.7

0.4

3.5

9.7

1.7

1.4

Traffic

 Whole record

0.8

53.2

53.0

132.6

2.4

45.2

43.4

1.5

1.0

3.8

17.4

3.3

1.3

 Last 5 years (2011–2015)

0.4

29.8

44.0

89.8

2.4

45.6

36.8

0.8

0.5

3.6

9.7

3.6

1.2

Industrial I

 Whole record

n/a

n/a

n/a

n/a

n/a

n/a

43.0

1.5

1.3

6.7

45.2

n/a

1.2

 Last 5 years (2011–2015)

n/a

n/a

n/a

n/a

n/a

n/a

37.9

1.0

0.5

4.1

21.3

n/a

1.3

Industrial II

 Whole record

0.7

35.0

42.2

95.9

3.7

39.4

37.2

0.9

0.5

3.0

10.0

n/a

1.1

 Last 5 years (2011–2015)

0.6

26.6

38.7

79.6

1.8

43.0

36.0

0.9

0.5

3.0

9.3

n/a

1.3

  1. The records comprise the following periods: for gaseous pollutants, from 2000 to 2015 (Background and Traffic stations) and from 2001 to 2015 (Industrial II station); for PM10, from 2003 to 2015 (Background, Traffic and Industrial I stations) and from 2008 to 2015 (Industrial II station)
  2. Industrial I: one station monitoring the emissions from a local steel mill
  3. Industrial II: two stations monitoring the emissions from a local waste-to-energy incinerator
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