Spectroscopy and Spectral Analysis, Volume. 42, Issue 8, 2432(2022)
Spectral Characteristics of Dissolved Organic Matter (DOM) in Leachate Released From Agricultural Soil Irrigated With Reclaimed Water
Figures & Tables(7)
Fig. 1. Surface features of soil samples before and after irrigation
(a): Original; (b): Irrigated with reclaimed water; (c): Irrigated with surface water
Fig. 2. UV-Vis absorption spectra of DOM in leachate from irrigated soil
Fig. 3. 3D-EEMs spectra of DOM in leachate from irrigated soil
(a): Water sample A; (b): Water sample B
Table 1. Physicochemical properties of reclaimed water, surface water and agricultural soil
View tableView in ArticleTable 1. Physicochemical properties of reclaimed water, surface water and agricultural soil
样品 指标 数值 再生水/
地表水COD 23.29/16.69 mg·L-1 pH 6.69/6.75 SS 8.17/28.25 mg·L-1 TOC 3.88/5.51 mg·L-1 TN 7.29/1.26 mg·L-1 TP 0.20/0.39 mg·L-1 Pb 0.06/0.003 mg·L-1 Cd 0.01/0.001 mg·L-1 农业土壤 Organic matters 27.89 g·kg-1 Water content 14.70% pH 6.71 EC5:1 196 μS·cm-1 Specific surface area 223 m2·g-1 CEC 21.09 cmol·kg-1 Pb 22.36 mg·kg-1 Cd 0.37 mg·kg-1
Table 2. Contents of organic matters and DOM in soil and soil leachate before and after irrigation
View tableView in ArticleTable 2. Contents of organic matters and DOM in soil and soil leachate before and after irrigation
样品 有机质含量/(g·kg-1) DOM含量 初始值 再生水灌溉后/地表水灌溉后 初始值 再生水灌溉后/地表水灌溉后 农业土壤深度/cm 0~10 32.05 34.24/33.17 60.98 mg·kg-1 73.92/63.71 mg·kg-1 10~20 31.44 32.73/32.25 70.25 mg·kg-1 74.05/72.58 mg·kg-1 20~30 26.01 26.59/27.63 70.01 mg·kg-1 71.14/60.83 mg·kg-1 30~40 23.58 23.33/22.02 60.22 mg·kg-1 59.30/60.14 mg·kg-1 40~50 19.69 20.12/19.18 50.45 mg·kg-1 45.23/47.19 mg·kg-1 再生水 - 2.92 mg·L-1 1.68 mg·L-1 (A水样) 地表水 - 4.36 mg·L-1 2.01 mg·L-1 (B水样)
Table 3. UV-Vis characteristic constants of DOM in leachate from irrigated soil
View tableView in ArticleTable 3. UV-Vis characteristic constants of DOM in leachate from irrigated soil
水样 UV254 SUVA254 SUVA260 SUVA280 E253/E203 E2/E3 E2/E4 E4/E6 A 0.212 12.62 11.55 9.17 0.15 4.38 10.57 10.00 B 0.262 13.03 12.09 9.60 0.19 5.00 14.64 17.00
Table 4. Fluorescence spectra constants of DOM in leachate from irrigated soil
View tableView in ArticleTable 4. Fluorescence spectra constants of DOM in leachate from irrigated soil
水样 FI HIX BIX Feff A 1.69 3.68 0.86 80.67 B 1.84 4.83 0.84 97.93
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Chun-hui FAN, Yi-bei XIN, Wen-jing YUAN. Spectral Characteristics of Dissolved Organic Matter (DOM) in Leachate Released From Agricultural Soil Irrigated With Reclaimed Water[J]. Spectroscopy and Spectral Analysis, 2022, 42(8): 2432
Paper Information
Category: Orginal Article
Received: Jul. 9, 2021
Accepted: --
Published Online: Mar. 17, 2025
The Author Email: FAN Chun-hui (fanchunhui@synu.edu.cn)
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