Geofluids / 2018 / Article / Tab 2

Research Article

A Regional Scale Investigation on Groundwater Arsenic in Different Types of Aquifers in the Pearl River Delta, China

Table 2

Principal component (PC) loadings for groundwater samples in granular aquifers.

ItemPC1PC2PC3PC4PC5PC6PC7

pH0.1050.7550.1630.1740.025−0.011−0.043
EC0.7660.4320.1960.1020.386−0.0530.003
DO−0.274−0.206−0.163−0.134−0.0450.500−0.312
Eh−0.015−0.248−0.051−0.0550.0690.7070.219
K+0.3140.2860.046−0.0440.804−0.0350.038
Na+0.9420.1510.0650.0530.107−0.0850.027
Ca2+0.3240.7530.2390.1580.314−0.233−0.043
Mg2+0.8120.2770.0790.0670.1000.174−0.059
0.2400.1860.5710.519−0.1130.260−0.072
Fe0.1250.0600.2440.672−0.141−0.3240.123
0.3630.7120.4310.272−0.026−0.109−0.048
Cl0.9450.0920.0100.0390.178−0.0570.030
0.3990.541−0.1310.0640.420−0.1680.026
F0.1350.717−0.098−0.100−0.223−0.0310.203
0.236−0.174−0.072−0.1570.8140.068−0.048
TDS0.6750.5300.2940.1380.350−0.129−0.026
TH0.5350.6920.2170.1480.283−0.125−0.054
I−0.0210.1360.3610.6840.0880.0390.186
0.0480.2030.9000.0640.0310.0160.023
Al−0.0340.019−0.0110.047−0.0180.0960.905
Mn0.0580.075−0.1270.851−0.0700.044−0.116
0.2520.3380.2180.376−0.1560.5410.063
As0.1010.0220.8900.116−0.021−0.147−0.004
Eigenvalue4.63.92.72.32.11.41.1
Explained variance (%)19.917.111.710.19.26.24.8
Cumulative% of variance19.937.048.858.968.174.379.1

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