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Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model
Analysis of sediment grain sizes and heavy metal correlations in the western part of Lake Taihu shows that the grain size of the sediment is stable as a whole. With increasing depth, the grain size tends to decrease. Heavy metals such as Cr, Cd, Pd and Sr are strongly correlated and influence each o...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6068659/ https://www.ncbi.nlm.nih.gov/pubmed/30037034 http://dx.doi.org/10.3390/ijerph15071540 |
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author | Li, Yan Mei, Liping Zhou, Shenglu Jia, Zhenyi Wang, Junxiao Li, Baojie Wang, Chunhui Wu, Shaohua |
author_facet | Li, Yan Mei, Liping Zhou, Shenglu Jia, Zhenyi Wang, Junxiao Li, Baojie Wang, Chunhui Wu, Shaohua |
author_sort | Li, Yan |
collection | PubMed |
description | Analysis of sediment grain sizes and heavy metal correlations in the western part of Lake Taihu shows that the grain size of the sediment is stable as a whole. With increasing depth, the grain size tends to decrease. Heavy metals such as Cr, Cd, Pd and Sr are strongly correlated and influence each other. Based on the positive matrix factorization (PMF) model, this study classified the origin of heavy metals in the sediments of western Lake Taihu into three major categories: Agricultural, industrial and geogenic. The contributions of the three heavy metal sources in each sample were analyzed and calculated. Overall, prior to the Chinese economic reform, the study area mainly practiced agriculture. The sources of heavy metals in the sediments were mostly of agricultural and geogenic origin, and remained relatively stable with contribution rates of 44.07 ± 11.84% (n = 30) and 35.67 ± 11.70% (n = 30), respectively. After the reform and opening up of China, as the economy experienced rapid development, industry and agriculture became the main sources of heavy metals in sediments, accounting for 56.99 ± 15.73% (n = 15) and 31.22 ± 14.31% (n = 15), respectively. The PMF model is convenient and efficient, and a good method to determine the origin of heavy metals in sediments. |
format | Online Article Text |
id | pubmed-6068659 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-60686592018-08-07 Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model Li, Yan Mei, Liping Zhou, Shenglu Jia, Zhenyi Wang, Junxiao Li, Baojie Wang, Chunhui Wu, Shaohua Int J Environ Res Public Health Article Analysis of sediment grain sizes and heavy metal correlations in the western part of Lake Taihu shows that the grain size of the sediment is stable as a whole. With increasing depth, the grain size tends to decrease. Heavy metals such as Cr, Cd, Pd and Sr are strongly correlated and influence each other. Based on the positive matrix factorization (PMF) model, this study classified the origin of heavy metals in the sediments of western Lake Taihu into three major categories: Agricultural, industrial and geogenic. The contributions of the three heavy metal sources in each sample were analyzed and calculated. Overall, prior to the Chinese economic reform, the study area mainly practiced agriculture. The sources of heavy metals in the sediments were mostly of agricultural and geogenic origin, and remained relatively stable with contribution rates of 44.07 ± 11.84% (n = 30) and 35.67 ± 11.70% (n = 30), respectively. After the reform and opening up of China, as the economy experienced rapid development, industry and agriculture became the main sources of heavy metals in sediments, accounting for 56.99 ± 15.73% (n = 15) and 31.22 ± 14.31% (n = 15), respectively. The PMF model is convenient and efficient, and a good method to determine the origin of heavy metals in sediments. MDPI 2018-07-20 2018-07 /pmc/articles/PMC6068659/ /pubmed/30037034 http://dx.doi.org/10.3390/ijerph15071540 Text en © 2018 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 Li, Yan Mei, Liping Zhou, Shenglu Jia, Zhenyi Wang, Junxiao Li, Baojie Wang, Chunhui Wu, Shaohua Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model |
title | Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model |
title_full | Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model |
title_fullStr | Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model |
title_full_unstemmed | Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model |
title_short | Analysis of Historical Sources of Heavy Metals in Lake Taihu Based on the Positive Matrix Factorization Model |
title_sort | analysis of historical sources of heavy metals in lake taihu based on the positive matrix factorization model |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6068659/ https://www.ncbi.nlm.nih.gov/pubmed/30037034 http://dx.doi.org/10.3390/ijerph15071540 |
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