Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Spearman correlations between PM2.5 and its chemical constituents
|
|
|
BC | OM | |
|---|---|---|---|---|---|
| PM2.5 | 0.95 | 0.95 | 0.93 | 0.94 | 0.97 |
|
0.95 | 0.96 | 0.94 | 0.95 | |
|
0.99 | 0.86 | 0.91 | ||
|
0.86 | 0.90 | |||
| BC | 0.98 |
Abbreviations: PM2.5, fine particulate matter; 
, sulfate; 
, nitrate; 
, ammonium; BC, black carbon; OM, organic matter.
