. 2020 Jul 24;8:e9378. doi: 10.7717/peerj.9378

Table 3. Fluorescent characteristics of the material.

No.	Humic acids								Fulvic acids
No.	HIX	BIX	f₄₅₀/f₅₀₀	A₄₆₅	IF₄₆₀/a₄₆₀	IF₃₁₀/a₃₁₀	IF₃₇₀/a₃₇₀	IF₂₄₅/a₂₄₅	HIX	BIX	f₄₅₀/f₅₀₀	A₄₆₅	IF₄₆₀/a₄₆₀	IF₃₁₀/a₃₁₀	IF₃₇₀/a₃₇₀	IF₂₄₅/a₂₄₅
1	3.36	0.88	1.20	421	5.69	7.87	6.52	3.26	7.30	0.88	1.64	433	2.10	7.55	6.23	3.96
2	4.85	0.54	1.22	501	7.11	8.43	7.52	3.46	8.51	0.46	1.63	356	2.37	9.99	7.69	5.81
3	4.72	0.34	1.23	385	5.66	7.91	6.44	3.47	9.52	0.54	1.64	392	1.92	8.42	6.34	4.38
4	6.95	0.59	1.15	644	7.54	9.30	7.29	3.60	9.19	0.49	1.75	372	3.36	15.93	12.02	8.18
5	5.80	0.59	1.16	530	6.79	10.37	7.84	4.02	9.00	0.50	1.64	370	1.84	9.75	6.39	4.72
6	5.66	0.56	1.19	515	8.24	11.90	9.12	5.23	8.36	0.40	1.60	381	2.11	9.55	6.26	5.16
7	9.74	0.58	1.12	367	4.47	5.97	5.01	2.40	10.00	0.41	1.61	456	1.39	5.54	4.18	3.03
8	4.36	0.54	1.28	438	8.42	10.24	9.35	4.24	7.87	0.57	1.69	297	3.37	14.09	11.15	8.53

Note:

HIX, humification index, BIX, biological index, f₄₅₀/f₅₀₀, fluorescence index, A₄₆₅, humification index, IF_x/a_x, fluorescence efficiency index (Table S4).