Skip to main content

Table 5 Potential polluting sources and key water parameters influencing surface water

From: Assessment of surface water quality and monitoring in southern Vietnam using multicriteria statistical approaches

PCs 1 2 3 4 5 6 7 8 9 10 11 12 13
Temp −0.19 0.31 0.05 −0.23 0.44 0.40 0.55 −0.29 0.25 0.04 0.07 −0.01 0.00
pH −0.16 −0.01 0.43 0.56 −0.05 0.40 −0.07 −0.15 −0.19 −0.50 0.02 0.00 0.00
TDS −0.22 0.46 0.15 0.16 0.00 −0.42 − 0.01 0.04 0.12 −0.02 0.01 0.02 0.71
EC −0.22 0.46 0.14 0.17 0.00 −0.42 − 0.01 0.04 0.12 −0.02 0.01 0.02 −0.71
TSS −0.33 − 0.25 0.24 0.26 0.11 0.23 −0.20 0.30 0.45 0.53 − 0.13 0.04 0.00
DO 0.44 0.19 0.19 − 0.06 − 0.01 0.11 − 0.09 0.07 0.18 −0.03 − 0.05 0.82 0.00
BOD 0.43 0.23 0.12 −0.01 0.09 0.10 −0.09 0.10 0.19 −0.11 −0.68 − 0.44 0.00
COD 0.32 0.05 −0.13 0.54 0.04 −0.07 0.13 −0.50 −0.18 0.53 −0.05 0.01 0.00
N-NH4+ 0.42 0.17 0.30 −0.04 − 0.04 0.11 − 0.18 0.09 0.18 0.11 0.69 −0.37 0.00
NO2-N −0.07 0.16 −0.63 0.17 −0.21 0.21 −0.33 −0.23 0.50 −0.21 0.09 0.01 0.00
N-NO3 −0.04 0.42 −0.27 0.14 −0.31 0.38 0.23 0.54 −0.33 0.19 0.01 0.00 0.00
Fe 0.24 −0.29 −0.18 0.40 0.18 −0.24 0.52 0.37 0.30 −0.27 0.13 −0.01 0.00
Cl 0.02 0.11 −0.25 0.11 0.78 0.02 −0.41 0.20 −0.28 −0.05 0.09 0.04 0.00
Eigen. 4.1 2.9 1.7 1.4 1.2 0.6 0.4 0.3 0.2 0.2 0.0 0.0 0.0
%Var. 31.8 22.4 13.2 10.5 9.3 4.6 3.1 2.1 1.5 1.2 0.2 0.0 0.0
C%Var. 31.8 54.2 67.4 77.9 87.3 91.8 95.0 97.1 98.6 99.8 100.0 100.0 100.0