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Table 2 Correlations of Factors 1, 4, 5, with all source profiles

From: Hazard ranking of wastewater sources in a highly polluted river in northern Taiwan by using positive matrix factorization with metal elements

Source Pollution

Factor 1

Factor 4

Factor 5

CMPa

−0.04

−0.02

0.68

BPCP1

0.98

0.98

0.24

EP1

0.04

0.06

0.51

BPCP2

0.96

0.98

0.21

FM

0.01

0.03

0.63

FT

0.03

0.05

0.72

MST

0.03

0.06

0.63

EP2

0.49

0.49

0.14

DS

0.03

0.05

0.95

mBPCP1b

0.98

0.98

0.16

mEP1

0.01

0.02

0.16

mBPCP2

0.98

0.98

0.13

  1. aCMP Chemical materials and products, BPCB Bare printed circuit boards, EP Electroplating products, FM Food manufacturing, FT Finishing of textiles, MST Metal surface treatment, DS Domestic sewage. Three manufacturing units collected from BPCP1, EP1 and BPCP2 are with “m” in front of the category
  2. bThe category with m means the manufacturing unit