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Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant
The accumulation of nitrogen in groundwater in the industrial plots, especially the high ammonium, can result in a serious threat to the groundwater system in the urban area. This study monitored the dissolved inorganic nitrogen (DIN) of the polluted groundwater four times in one year in a retired n...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9265358/ https://www.ncbi.nlm.nih.gov/pubmed/35805679 http://dx.doi.org/10.3390/ijerph19138022 |
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author | Yang, Kunhua Jiang, Dengdeng Chen, Yun Wei, Jing Xia, Feiyang Xie, Wenyi Zhou, Yan Li, Xuwei Deng, Shaopo |
author_facet | Yang, Kunhua Jiang, Dengdeng Chen, Yun Wei, Jing Xia, Feiyang Xie, Wenyi Zhou, Yan Li, Xuwei Deng, Shaopo |
author_sort | Yang, Kunhua |
collection | PubMed |
description | The accumulation of nitrogen in groundwater in the industrial plots, especially the high ammonium, can result in a serious threat to the groundwater system in the urban area. This study monitored the dissolved inorganic nitrogen (DIN) of the polluted groundwater four times in one year in a retired nitrogenous fertilizer plant site with a production history of nearly 40 years, to analyze the spatial-temporal characteristics of DIN species (NH(4)(+)-N, NO(3)(−)-N, and NO(2)(−)-N) and the effects of groundwater environment on their transfer and transformation. The results showed that NH(4)(+)-N (<0.025 to 1310 mg/L) was the main DIN species (61.38–76.80%) with low mobility, whereas the concentration of NO(3)(−)-N and NO(2)(−)-N was 0.15–146 mg/L and <0.001–12.4 mg/L, accounting for 22.34–36.07% and 0.53–2.83% of total DIN, respectively. The concentration and proportion of NO(3)(−)-N and NO(2)(−)-N showed an upward trend with time, posing a threat to the safety of surrounding groundwater, and their high spatial-temporal variation was related to the morphological transformation and the transport. In the wet season, the pH and redox condition benefited the nitrification, and NO(3)(−)-N easily migrated from the deep soil solution to groundwater, hence the NO(3)(−)-N can be accumulated. Therefore, the analysis of species and behaviors of DIN in shallow groundwater is indispensable for environmental risk assessment. |
format | Online Article Text |
id | pubmed-9265358 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92653582022-07-09 Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant Yang, Kunhua Jiang, Dengdeng Chen, Yun Wei, Jing Xia, Feiyang Xie, Wenyi Zhou, Yan Li, Xuwei Deng, Shaopo Int J Environ Res Public Health Article The accumulation of nitrogen in groundwater in the industrial plots, especially the high ammonium, can result in a serious threat to the groundwater system in the urban area. This study monitored the dissolved inorganic nitrogen (DIN) of the polluted groundwater four times in one year in a retired nitrogenous fertilizer plant site with a production history of nearly 40 years, to analyze the spatial-temporal characteristics of DIN species (NH(4)(+)-N, NO(3)(−)-N, and NO(2)(−)-N) and the effects of groundwater environment on their transfer and transformation. The results showed that NH(4)(+)-N (<0.025 to 1310 mg/L) was the main DIN species (61.38–76.80%) with low mobility, whereas the concentration of NO(3)(−)-N and NO(2)(−)-N was 0.15–146 mg/L and <0.001–12.4 mg/L, accounting for 22.34–36.07% and 0.53–2.83% of total DIN, respectively. The concentration and proportion of NO(3)(−)-N and NO(2)(−)-N showed an upward trend with time, posing a threat to the safety of surrounding groundwater, and their high spatial-temporal variation was related to the morphological transformation and the transport. In the wet season, the pH and redox condition benefited the nitrification, and NO(3)(−)-N easily migrated from the deep soil solution to groundwater, hence the NO(3)(−)-N can be accumulated. Therefore, the analysis of species and behaviors of DIN in shallow groundwater is indispensable for environmental risk assessment. MDPI 2022-06-30 /pmc/articles/PMC9265358/ /pubmed/35805679 http://dx.doi.org/10.3390/ijerph19138022 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Kunhua Jiang, Dengdeng Chen, Yun Wei, Jing Xia, Feiyang Xie, Wenyi Zhou, Yan Li, Xuwei Deng, Shaopo Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant |
title | Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant |
title_full | Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant |
title_fullStr | Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant |
title_full_unstemmed | Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant |
title_short | Spatial-Temporal Distribution, Morphological Transformation, and Potential Risk of Dissolved Inorganic Nitrogen in the Contaminated Unconfined Aquifer from a Retired Nitrogenous Fertilizer Plant |
title_sort | spatial-temporal distribution, morphological transformation, and potential risk of dissolved inorganic nitrogen in the contaminated unconfined aquifer from a retired nitrogenous fertilizer plant |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9265358/ https://www.ncbi.nlm.nih.gov/pubmed/35805679 http://dx.doi.org/10.3390/ijerph19138022 |
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