Characterization of Urban Runoff Pollution between Dissolved and Particulate Phases
Table 4
Correlation between runoff pollutants in different phases.
Correlation matrix
TS
TDS
TSS
TCOD
DCOD
PCOD
TN
DTN
PTN
TP
DTP
PTP
TS
0.976
0.972
0.830
0.651
0.870
0.425
0.414
0.331
0.914
0.489
0.914
TDS
0.886
0.689
0.884
0.583
0.721
0.242
0.239
0.181
0.898
0.565
0.805
TSS
0.925
0.644
0.842
0.565
0.872
0.504
0.584
0.478
0.882
0.469
0.874
TCOD
0.761
0.668
0.629
0.874
0.865
0.394
0.369
0.338
0.679
0.639
0.723
DCOD
0.711
0.893
0.691
0.918
0.781
0.257
0.260
0.183
0.584
0.522
0.714
PCOD
0.720
0.549
0.894
0.849
0.838
0.528
0.472
0.496
0.616
0.703
0.610
TN
0.514
0.463
0.421
0.625
0.873
0.716
0.957
0.814
0.332
0.301
0.349
DTN
0.431
0.540
0.367
0.569
0.859
0.677
0.996
0.830
0.372
0.339
0.390
PTN
0.557
0.783
0.309
0.624
0.576
0.775
0.982
0.960
0.161
0.143
0.171
TP
0.725
0.637
0.511
0.640
0.726
0.695
0.704
0.668
0.759
0.985
0.991
DTP
0.674
0.639
0.425
0.635
0.821
0.593
0.698
0.654
0.770
0.993
0.955
PTP
0.820
0.704
0.858
0.416
0.424
0.857
0.618
0.620
0.599
0.877
0.813
The data in the table are all the correlation coefficient “.” The data of correlation coefficient between road runoff pollutants is above the diagonal; in contrast, that between roof runoff pollutants is below the diagonal. High correlation coefficients () are shown in bold.
