Impact of Long-Term Reclaimed Water Irrigation on the Distribution of Potentially Toxic Elements in Soil
An In-Situ Experiment Study in the North China Plain
Bibliographic Data
| ID | 15499424 |
|---|---|
| Authors | Xiaomin Gu (0000-0002-2060-7243, Nantong University), Yong Xiao (0000-0002-6414-8384, Southwest Jiaotong University, corresponding author), Shiyang Yin (0000-0002-7542-5092, North China Electric Power University, corresponding author), Honglu Liu (Beijing Water Science and Technology Institute), Baohui Men (0000-0003-2481-2313, North China Electric Power University), Zhongyong Hao (Beijing Water Science and Technology Institute), Peng Qian (0000-0002-5396-9160, Nantong University), Huijun Yan (0000-0001-9966-2781, China Institute of Geological Environmental Monitoring), Qichen Hao (0000-0001-8070-9244, Chinese Academy of Geological Sciences), Yong Niu (0000-0001-5893-8163, Shandong Agricultural University), Hui Huang (0000-0002-3410-556X, Nantong University), Qiuming Pei (0000-0003-4600-1511, Southwest Jiaotong University) |
| Year | 2019 |
| Volume | 16 |
| Issue | 4 |
| Pages | 649-649 |
| Publication date | 2019-02-22 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph16040649 |
| PMID | 30813230 |
| OpenAlex | W2915408964 |
| Language | EN |
| Citations received | 2 |
| References cited | 33 |
The widespread use of reclaimed water has alleviated the water resource crisis worldwide, but long-term use of reclaimed water for irrigation, especially in agricultural countries, might threaten the soil environment and further affect groundwater quality. An in-situ experiment had been carried out in the North China Plain, which aimed to reveal the impact of long-term reclaimed water irrigation on soil properties and distribution of potentially toxic elements (As, Cd, Cr, Hg, Zn and Pb) in the soil profile as well as shallow groundwater. Four land plots were irrigated with different quantity of reclaimed water to represent 0, 13, 22 and 35 years' irrigation duration. Pollution Load Index (PLI) values of each soil layer were calculated to further assess the pollution status of irrigated soils by potentially toxic elements (PTEs). Results showed that long-term reclaimed water irrigation caused appreciable increase of organic matter content, and might improve the soil quality. High soil organic matter concentrations conduced to high adsorption and retention capacity of the soils toward PTEs, which could reduce the risk of PTEs leaching into deep layers or shallow groundwater. Highest levels of Cr, Pb and Zn were observed at 200−240 cm and 460−500 cm horizons in plots. Longer irrigation time (35 years and 22 years) resulted in a decreasing trend of As, Cd, Hg, Pb and Zn in lower part of soil profiles (>540 cm) compared with that with 13-years' irrigation years. Long-term reclaimed water irrigation still brought about increases in concentrations of some elements in deep soil layer although their content in soils and shallow groundwater was below the national standard. Totally speaking, proper management for reclaimed water irrigation, such as reduction of irrigation volume and rate of reclaimed water, was still needed when a very long irrigation period was performed
Archaeology · Biology · China · Distribution (mathematics · Geography · Geotechnical engineering · Hydrology (agriculture · Irrigation · Reclaimed water · Term (time · Wastewater · Water resource management · Environmental Science · Heavy metals in environment · Mathematics · Wastewater Treatment and Reuse · Water Quality and Pollution Assessment · Ecology · Environmental Engineering · Geology
| Unique citing works | 2 |
|---|---|
| Citations per year | 0,29 |
| Citation span | 2019 - 2023 (5) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 2 |