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Table 3 Spearman correlation between daily concentrations of PM2.5 total mass and chemical species

From: Respiratory function declines in children with asthma associated with chemical species of fine particulate matter (PM2.5) in Nagasaki, Japan

 

PM2.5

OC

EC

Nitrate

Sulfate

Ammonium

Nagasaki

  PM2.5 mass

1

0.50

0.54

0.21

0.57

0.67

  OC

 

1

0.49

0.15

0.46

0.49

  EC

  

1

0.08

0.26

0.38

  Nitrate

   

1

0.42

0.29

  Sulfate

    

1

0.80

  Ammonium

     

1

Isahaya

  PM2.5 mass

1

0.77

0.77

0.44

0.88

0.88

  OC

 

1

0.80

0.41

0.56

0.59

  EC

  

1

0.62

0.63

0.72

  Nitrate

   

1

0.31

0.50

  Sulfate

    

1

0.96

  Ammonium

     

1

  1. EC elemental carbon; OC organic carbon
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Environmental Health

ISSN: 1476-069X