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Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China

Dissolved heavy metals are not only the essential micronutrients, but also the toxic elements for human bodies. To investigate the heavy metal sources and assess the water quality of the Lancangjiang River, dissolved Cr, Ni, Cu, Zn, Mo, and Pb were detected in this study. The results show that disso...

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Autores principales: Liang, Bin, Han, Guilin, Zeng, Jie, Qu, Rui, Liu, Man, Liu, Jinke
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037378/
https://www.ncbi.nlm.nih.gov/pubmed/31979256
http://dx.doi.org/10.3390/ijerph17030732
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author Liang, Bin
Han, Guilin
Zeng, Jie
Qu, Rui
Liu, Man
Liu, Jinke
author_facet Liang, Bin
Han, Guilin
Zeng, Jie
Qu, Rui
Liu, Man
Liu, Jinke
author_sort Liang, Bin
collection PubMed
description Dissolved heavy metals are not only the essential micronutrients, but also the toxic elements for human bodies. To investigate the heavy metal sources and assess the water quality of the Lancangjiang River, dissolved Cr, Ni, Cu, Zn, Mo, and Pb were detected in this study. The results show that dissolved Ni and Mo, Cr and Pb, and Cu and Zn were similarly distributed within the drainage basin. The correlation analysis exhibited that dissolved Ni and Mo had correlation with water parameter, and dissolved Cu was weakly correlated with Ni, indicating that they might be affected by natural processes. The principal component analysis explained 68.342% of the total variance for three principal components, of which dissolved Ni, Mo, and Cu were controlled by natural inputs; dissolved Cu and Cr were affected by anthropogenic activities; and dissolved Zn was influenced by agricultural activities in the downstream. The water quality showed that the water in upstream was worse than in midstream and downstream, and the whole drainage basin had water of excellent quality. Water within the drainage basin poses no risks to human bodies via daily diets and dermal routes. Dissolved Zn, Cu, and Mo occupied the major proportion of heavy metals transporting into the Mekong River. The agricultural inputs of dissolved Zn might pose potential risks to the Mekong River.
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spelling pubmed-70373782020-03-11 Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China Liang, Bin Han, Guilin Zeng, Jie Qu, Rui Liu, Man Liu, Jinke Int J Environ Res Public Health Article Dissolved heavy metals are not only the essential micronutrients, but also the toxic elements for human bodies. To investigate the heavy metal sources and assess the water quality of the Lancangjiang River, dissolved Cr, Ni, Cu, Zn, Mo, and Pb were detected in this study. The results show that dissolved Ni and Mo, Cr and Pb, and Cu and Zn were similarly distributed within the drainage basin. The correlation analysis exhibited that dissolved Ni and Mo had correlation with water parameter, and dissolved Cu was weakly correlated with Ni, indicating that they might be affected by natural processes. The principal component analysis explained 68.342% of the total variance for three principal components, of which dissolved Ni, Mo, and Cu were controlled by natural inputs; dissolved Cu and Cr were affected by anthropogenic activities; and dissolved Zn was influenced by agricultural activities in the downstream. The water quality showed that the water in upstream was worse than in midstream and downstream, and the whole drainage basin had water of excellent quality. Water within the drainage basin poses no risks to human bodies via daily diets and dermal routes. Dissolved Zn, Cu, and Mo occupied the major proportion of heavy metals transporting into the Mekong River. The agricultural inputs of dissolved Zn might pose potential risks to the Mekong River. MDPI 2020-01-23 2020-02 /pmc/articles/PMC7037378/ /pubmed/31979256 http://dx.doi.org/10.3390/ijerph17030732 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liang, Bin
Han, Guilin
Zeng, Jie
Qu, Rui
Liu, Man
Liu, Jinke
Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China
title Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China
title_full Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China
title_fullStr Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China
title_full_unstemmed Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China
title_short Spatial Variation and Source of Dissolved Heavy Metals in the Lancangjiang River, Southwest China
title_sort spatial variation and source of dissolved heavy metals in the lancangjiang river, southwest china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037378/
https://www.ncbi.nlm.nih.gov/pubmed/31979256
http://dx.doi.org/10.3390/ijerph17030732
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