Esther Coz1,2, Gary Casuccio3, Traci L. Lersch3, Teresa Moreno2 and Begoa Artano15th DAURE Science MeetingBarcelona, May 26DAURE Microscopy1 Ciemat, Madrid2 IDAEA-CSIC, Barcelona3 RJ Lee Inc., Pittsburgh (USA)

OutlineMethodsSamplingMicroscopyData analysis

MethodologyParticle CollectionScanning Electron MicroscopyEnergy Dispersive X-ray SpectroscopyDigital Image AnalysisElemental CompositionMorphologyData AnalysisHow?

OutlineMethodsSamplingMicroscopyData analysis

SamplingParticle CollectionLow-Vol samplerEight-stage cascade impactor (Andersen)PM2.5 samples: Period: Feb 25 28 Times: 7 am, 11 am, 5 pm and 8 am Intervals: 30 min 2 hoursPM2.5: PC filtersPM2.5-10: Aluminum substratesNo fiber filters

Impactor Stage (cut-off size)Stage12345678D50 (mm)16104.02.41.50.850.470.29

SamplingBCN siteCSIC dataCSIC data

Grfico1

34.131.826.8

32.530.825.9

30.428.824

31.930.325.4

36.633.628.5

34.329.124.4

34.826.221.7

47.223.819.1

4528.223.3

44.924.419.8

4424.720

49.525.520.7

57.327.322.1

5628.623.2

5630.424.7

49.929.323.6

49.630.324.6

47.228.222.8

34.526.521.7

30.323.819.1

31.824.919.8

37.531.326.1

35.731.926.8

34.131.226.3

302823.4

29.126.922.4

29.126.121.5

19.11814.2

2321.617.6

2927.222.9

31.92924.4

40.431.226.3

42.626.921.7

30.319.514.9

2917.112.9

31.117.913.6

36.318.714.2

37.619.314.8

31.518.514.1

30.618.413.8

28.119.114.3

31.219.814.8

22.519.314.7

27.323.218.3

3126.621.5

31.82822.8

26.224.119.5

26.922.918.2

26.723.819.1

27.52520.2

3228.423.6

34.131.526.9

37.534.229.5

33.23126.6

33.331.327.1

43.237.833.1

52.140.735.6

50.837.332.1

62.637.631.8

6733.227.3

82.525.219

72.725.219.2

56.724.418.9

54.123.417.7

52.523.217.4

44.123.618.1

35.426.120.4

39.529.323.4

41.931.926.2

44.236.530.9

45.739.333.6

40.736.731.5

48.641.936.7

5646.741.3

57.747.241.8

5547.642.3

55.447.842.1

48.544.139

50.944.639.3

65.747.441.6

77.647.541.3

57.637.532.4

53.733.428.4

114.459.651.4

116.955.847.5

94.952.345.2

87.650.142.9

83.247.540.5

77.845.338.3

89.348.340.9

69.547.440.4

70.552.344.7

69.252.244.8

71.253.846.3

69.954.745.5

58.250.844.3

57.749.542.9

6052.245.7

61.352.946.1

60.854.948.4

61.154.548.1

57.45346.8

60.955.348.8

6555.248.4

69.452.645.6

78.153.946.4

59.343.837.4

68.748.241.3

69.648.441.6

72.250.143.2

54.944.438.3

47.941.636.1

51.843.838.2

55.647.841.9

48.543.237.6

42.54136.1

40.539.234.6

3533.829.6

30.229.225.3

29.929.325.2

PM-10

PM-2.5

PM-1.0

Hoja1

DateTimePM-10PM-2.5PM-1.0

02/2434.131.826.8

2:0032.530.825.9

30.428.824

31.930.325.4

36.633.628.5

34.329.124.4

34.826.221.7

8:0047.223.819.1

4528.223.3

44.924.419.8

4424.720

49.525.520.7

57.327.322.1

14:005628.623.2

5630.424.7

49.929.323.6

49.630.324.6

47.228.222.8

34.526.521.7

20:0030.323.819.1

31.824.919.8

37.531.326.1

35.731.926.8

34.131.226.3

02/25302823.4

2:0029.126.922.4

29.126.121.5

19.11814.2

2321.617.6

2927.222.9

31.92924.4

8:0040.431.226.3

42.626.921.7

30.319.514.9

2917.112.9

31.117.913.6

36.318.714.2

14:0037.619.314.8

31.518.514.1

30.618.413.8

28.119.114.3

31.219.814.8

22.519.314.7

20:0027.323.218.3

3126.621.5

31.82822.8

26.224.119.5

26.922.918.2

02/2626.723.819.1

2:0027.52520.2

3228.423.6

34.131.526.9

37.534.229.5

33.23126.6

33.331.327.1

8:0043.237.833.1

52.140.735.6

50.837.332.1

62.637.631.8

6733.227.3

82.525.219

14:0072.725.219.2

56.724.418.9

54.123.417.7

52.523.217.4

44.123.618.1

35.426.120.4

20:0039.529.323.4

41.931.926.2

44.236.530.9

45.739.333.6

40.736.731.5

02/2748.641.936.7

2:005646.741.3

57.747.241.8

5547.642.3

55.447.842.1

48.544.139

50.944.639.3

8:0065.747.441.6

77.647.541.3

57.637.532.4

53.733.428.4

114.459.651.4

116.955.847.5

14:0094.952.345.2

87.650.142.9

83.247.540.5

77.845.338.3

89.348.340.9

69.547.440.4

20:0070.552.344.7

69.252.244.8

71.253.846.3

69.954.745.5

58.250.844.3

02/2857.749.542.9

2:006052.245.7

61.352.946.1

60.854.948.4

61.154.548.1

57.45346.8

60.955.348.8

8:006555.248.4

69.452.645.6

78.153.946.4

59.343.837.4

68.748.241.3

69.648.441.6

14:0072.250.143.2

54.944.438.3

47.941.636.1

51.843.838.2

55.647.841.9

48.543.237.6

20:0042.54136.1

40.539.234.6

3533.829.6

30.229.225.3

29.929.325.2

Hoja1

PM-10

PM-2.5

PM-1.0

Hoja2

Hoja3

SamplingBCN site PM2.5 concentrations ~ 20-60 gm-3 Coarse to fine PM ratios: Which complementary information does electron microscopy give?PSI data

OutlineMethodsSamplingMicroscopyData analysis

MethodologyScanning Electron MicroscopySample

MethodologyScanning Electron MicroscopyQuantitative AnalysisQualitative Analysis Personal SEM (Aspex Inc.) Fully Computer Controlled SEM(CCSEM) FEI Sirion 400Hitachi S5000 High Resolution SEM (HRSEM)Shape ParametersSp1=Dp/DmaxSp2=Dmin/DmaxAR=Dmax/DminDp=(4/Area)1/2DmaxDmin

OutlineMethodsSamplingMicroscopyData analysis

Data AnalysisParticle by particle (>20,000): C, O, Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, Cr, Mn, Fe, Zn, Ba, Pb MineralsHeavy MetalOxidesAmmonium Sulfate(bisulfate)Primary Biogenic Organic AerosolsCarbonaceous & NitratesSilicates & AluminosilicatesCalcium CarbonatesSulfatesNon sulfate saltsClustering Particle number, Volume and mass contribution Size distribution Associated quantitative morphology (circularity, convexity, elongation and compactness) Cluster by cluster:

Data AnalysisAluminosilicates: Natural vs. Industrial originSoot-like agglomerates: Fresh vs. Aged

DAURE campaignThanks to the colleagues from Ciemat, IDEAE-CSIC & RJ Lee Group, Inc. !!!!!!!!!

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