CITYFLUX – Filter Sample (J Floor). Colour guide for EDX data: Carbon Potassium Chlorine Oxygen Magnesium Iron Calcium Aluminium Silicon Phosphorous Barium.

CITYFLUX – Filter Sample (J Floor)

Colour guide for EDX data:

Carbon

Potassium

Chlorine

Oxygen

Magnesium

Iron

Calcium

Aluminium

Silicon

Phosphorous

Barium

Zinc

Sodium

Sulphur

Nitrogen

A

B

C

D

A

Foam damage

a

b

c

10um

a

b

c

b

ac

CaFe

Si

C

Ca

Si

SAl Ca

Si

SAl

K

C, 73.87

S, 1.32

Ba, 2.13

Other, 3.45

N, 9.32

Si, 5.86

Ca, 2.42

Al, 0.5

Fe, 1.36

K, 0.61 Cl, 0.5O, 2.12

O, 11.71

C, 37.96

N, 50.3

Fe, 0.01Mg, 0.01

Before

After

Foam damage

A

B

C

D

B

Foam damage in progress – 3 images taken over 20 seconds

a

b

c

10um

a

bc

a

b

c

Sample moved

.: Background spectrum?

Ca

ClS

SiS

Ca

Cl

K

C, 37.31

N, 62.67

O, 0.02

Al, 0.54

C, 41.1

Other, 14.8

S, 9.18

Ca, 29.98 Si, 5.33

K, 2.34

Cl, 3.22

O, 0.73

Fe, 1.97

Ba, 5.62

C, 55.12

Ca, 2.73

N, 28.36

Other, 4.41

Cl, 1.57K, 0.82

P, 0.28

Ba, 3.01

S, 1.12

O, 2.95

Fe, 2.56

Al, 0.35

Si, 1.13

Images after

Foam damage

A

B

C

D

a

bc

d

C

a

b c

d

aCa

O

Si

S

Cl

KAl

Mg

Ca

Ca

Si

Si

C

C

C

CMg

Al

O KClS

d

cb

Fe, 1.6

Mg, 0.26

C, 72.56

P, 0.95

Ba, 4.66

S, 1.22

Other, 6.83

K, 1.37

Cl, 0.98O, 3.01

N, 6.44

Si, 3.92

Al, 1.26

Ca, 1.78

C, 74.97

P, 1.54

Ba, 10.79

S, 1.98Other, 14.31

Si, 1.85

K, 0.88 Cl, 2.03

Ca, 2.79

Mg, 0.5

Fe, 2.67

Al, 0.4

Ca, 4.27

Fe, 0.59

Mg, 1.04

C, 75.09

S, 0.19

Other, 0.51

O, 16.06

K, 0.41 Cl, 0.19

Si, 1.45

Ba, 0.32

Si, 3.27

C, 77.08

S, 2.41

Ba, 0.38Na, 0.21

K, 0.48 Cl, 0.2

O, 9.93

Other, 3

Mg, 0.23

Fe, 0.5

Ca, 4.48

Al, 0.82

Images after

A

B

C

D

D

1

23

a

b

c

1

Foam damage – images taken over 15 seconds

ab

c

a

b c

Fe

Si

C

SCa

Cl

CC, 87.25

S, 2.21

Ba, 4.32

P, 0.45

Other, 6.98

Si, 0.42

K, 0.55 Cl, 0.76

Al, 0.59

Mg, 0.55

Fe, 0.8

Ca, 2.1

C, 75.75S, 0.34

Ba, 1.56

P, 0.39

K, 0.33 Cl, 0.25

O, 5.5

Fe, 14.87

Other, 2.29

Si, 0.66

Al, 0.08

Ca, 0.27

Image before/after

Before

After

D

1

23

2

a

b

c

d

e

2

a

b

c

d

e

e

d

b

c

a

C

SCa

C

Si

Ca

SAl

FeOCl

Mg

Ca

C

O

C

C

Ca, 1.78

Fe, 1.41

C, 81.02

S, 1.4

P, 1.34

Ba, 7.6

Other, 10.34

Si, 0.98

K, 0.68

Cl, 0.79O, 1.27

Mg, 0.73

Al, 1.01

C, 74.58

S, 4.22

Other, 4.85

N, 6.85

O, 8.68

K, 0.2 Cl, 0.05

Si, 0.1Ca, 4.3

Fe, 0.38P, 0.17

Ba, 0.46

C, 63.22

O, 19.96 P, 0.77

Ba, 0.66

S, 0.32

Mg, 0.08

Other, 1.75

Al, 0.35Si, 0.5

Fe, 0.58

Ca, 12.82K, 0.28

Cl, 0.47

C, 74.44

Other, 11.45

S, 1.8

Ba, 7.79

P, 1.86

K, 2.37 Cl, 2.52

Si, 2.2

Al, 1.86

Mg, 1.21Fe, 1.63

Ca, 2.31

C, 77.42

Fe, 0.86

Ca, 1.29

Al, 0.46Si, 1.78

Cl, 0.27K, 0.02

O, 4.47

N, 12.06

P, 0.1

Ba, 0.8

S, 0.29

Other, 1.19

Mg, 0.18

Particle flipped over

Damage by beam

Before

After

D

1

23

a

b

c

d

f

e

3

a

b

c

d

f

e

b a

c

e d

f

C

Ca

Si

KS

ClAl

C

O

Si

Ca

Fe

AlK

Cl

S

C

Ca

C

O

C

Ca

OSi

C

FeCaK

Si

Al

MgS

ClCa, 1.26

Fe, 0.74

C, 89.46

Al, 0.36

Si, 0.36

Mg, 0.58

O, 0.74Cl, 0.35

K, 0.71

Other, 5.44

P, 0.71

Ba, 4.1

Zn, 0Na, 0

S, 0.63

Fe, 0.61

Mg, 0.14

Cl, 0.36

C, 82.42

S, 0.44

Ba, 2.73

P, 0.57

Other, 3.74

Al, 0.33

Si, 0.77

K, 0.7

O, 5.35

Ca, 5.56Si, 0.43

C, 52.45

K, 0.8

Cl, 0.92O, 17.19

Ca, 22

Other, 1.05

N, 3.49

Al, 0.02

S, 0.5

Ba, 0.33

P, 0.22

Mg, 0.42 Fe, 1.23

C, 79.83

P, 0.25

Ba, 3.99

Zn, 0Na, 0

S, 1.27

Other, 5.51

Ca, 3.26

K, 1.35Cl, 0.82

Si, 4.34 Al, 2.32

Fe, 2.39

Mg, 0.18

C, 81.42

P, 0.06

Na, 0 Zn, 0

O, 13.49

K, 0.25 Cl, 0.63

Other, 0.97

Mg, 0.04

Si, 1.13

Al, 0.49

Fe, 0.42

Ca, 1.18

S, 0.43

Ba, 0.48

C, 83.85

Mg, 0.14

Al, 1.29

Ca, 1.7

O, 4.1Cl, 0.57

Fe, 1.28

Si, 2.45

K, 0.68

Other, 3.94

Zn, 0 Na, 0

P, 0.08

Ba, 2.87

S, 0.99

After image

Overview after investigation,

Extensive beam damage

•Particle sizes: All less than ~10um, most <2um

•Particle Composition – Carbon or silicate material