Table 1 Description and wavelength positions of PARAFAC components in the Global model and their comparisons with previously identified components.

From: Impact of dataset diversity on accuracy and sensitivity of parallel factor analysis model of dissolved organic matter fluorescence excitation-emission matrix

This study

Previous studies

Component

λex/λem

λex/λem

Description and source assignment

Reference

G1

230,305/414

<250,320/400

G2, Microbial humic-like fluorescence (wastewater)

13

  

224,314/398

Component 1, humic-like substances (surface water)

34

G2

280/332

290/352

G6, protein, Tryptophan-like (wastewater)

25

  

275/340

Peak A, tryptophan (M. aeruginosa)

13

  

225,280/340

C3, protein like (surface water)

22

G3

245,285,335/420

250,340/438

Component 4, humic-like substances (M. aeruginosa)

27

  

260,360/440

Component 3, humic-like substances (M. aeruginosa)

26

G4

225/332

<250/348

G5, protein, Tryptophan-like (wastewater)

13

  

<224/344

Component 3, protein like (surface water)

35

G5

245,290/364

<250,290/360

C4, amino acids, free or protein bound (surface water)

16

  

250,290/360

Component 4, protein-like substances (M. aeruginosa)

13

G6

265,365/472

<250,370/464

G1, Terrestrial humic-like fluorescence in high nutrient and wastewater impacted environments (wastewater)

9

  

270,360/478

Component 3, humic-like (coastal water)

25

  

270,360/470

C2, humic-like (surface water)

14

G7

265/314

270/300

G7, Protein, Tyrosine-like (wastewater)

26

  

270/305

Component 3, tyrosine (lake)

13

  

<300,280-380

Component 6, protein-like, microbial delivered (drinking water)

22