Aquatic Humic Substances: Relationship Between Origin and Complexing Capacity

被引：0
|
作者：
María de Jesús González-Guadarrama
Ma. Aurora Armienta-Hernández
André H. Rosa
机构：
[1] Universidad Nacional Autónoma de México,Posgrado en Ciencias del Mar y Limnología
[2] Universidad Nacional Autónoma de México,Instituto de Geofísica
[3] Universidade Estadual Paulista Júlio de Mesquita Filho,Departamento de Engenharia Ambiental
来源：
Bulletin of Environmental Contamination and Toxicology | 2018年 / 100卷
关键词：
Aquatic humic substances; Complexation; Transition metals; Arsenic; pH; Redox;
D O I：
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摘要：
Aiming to determine the relationship between source and complexing capacity, humic substances obtained from three sites (Sorocaba and Itapanhau Brasilian rivers, and Xochimilco Lake in Mexico) were studied. Copper, manganese, zinc and arsenic complexing capacity were determined for the three substances under various pH conditions. Results showed similar complexing capacity for the three elements depending on the chemistry of each one and on the physico–chemical conditions. Speciation diagrams showed that these conditions affect both, the humic substances, and the transition metals and arsenic.
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页码：627 / 633
页数：6
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