G. Aldana, M. Hernández, S. Cram, O. Arellano, O. Morton, C. A. Ponce de León
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引用次数: 5
摘要
摘要分析了形成废水湿地的运河系统水柱中的微量金属物种，以确定它们与当地捕捞的尼罗罗非鱼鳃中金属积累的相关性。分析了悬浮颗粒和溶解水中的金属浓度。使用Windermere Humic Water Model version VII计算金属物种，表明高有机物和主要阳离子含量是重要参数。此外，预计游离离子金属浓度与有机物的芳香性相关；然而，腐殖酸以外的有机化合物似乎与系统中的金属络合。此外，在鳃中的金属积累和任何溶解的金属物种之间都没有发现明确的相关性。尽管如此，在计算的金属物种和悬浮颗粒在罗非鱼中的金属积累之间可以看到某些趋势。
Trace metal speciation in a wastewater wetland and its bioaccumulation in tilapia Oreochromis niloticus
Abstract Trace metal species in the water column of a canal system forming a wetland filled with wastewater were analyzed to determine their correlation with metal accumulation in the gills of locally fished Oreochromis niloticus. The metal concentrations in the suspended particles and water dissolved were analyzed. The metal species were calculated using Windermere Humic Aqueous Model version VII showing that the high organic matter and major cation contents were important parameters. Also, the free ion metal concentration was expected to correlate with the organic matter aromaticity; however, organic compounds other than humic susbtances seem to be complexing the metals in the system. Additionally, no clear correlation could be found between metal accumulation in gills and any of the dissolved metal species. Nonetheless, certain trends could be seen between the calculated metal species and metal accumulation in the tilapia from the suspended particles.
期刊介绍：
Chemical Speciation & Bioavailability ( CS&B) is a scholarly, peer-reviewed forum for insights on the chemical aspects of occurrence, distribution, transport, transformation, transfer, fate, and effects of substances in the environment and biota, and their impacts on the uptake of the substances by living organisms. Substances of interests include both beneficial and toxic ones, especially nutrients, heavy metals, persistent organic pollutants, and emerging contaminants, such as engineered nanomaterials, as well as pharmaceuticals and personal-care products as pollutants. It is the aim of this Journal to develop an international community of experienced colleagues to promote the research, discussion, review, and spread of information on chemical speciation and bioavailability, which is a topic of interest to researchers in many disciplines, including environmental, chemical, biological, food, medical, toxicology, and health sciences.
Key themes in the scope of the Journal include, but are not limited to, the following “6Ms”:
Methods for speciation analysis and the evaluation of bioavailability, especially the development, validation, and application of novel methods and techniques.
Media that sustain the processes of release, distribution, transformation, and transfer of chemical speciation; of particular interest are emerging contaminants, such as engineered nanomaterials, pharmaceuticals, and personal-care products.
Mobility of substance species in environment and biota, either spatially or temporally.
Matters that influence the chemical speciation and bioavailability, mainly environmentally relevant conditions.
Mechanisms that govern the transport, transformation, transfer, and fate of chemical speciation in the environment, and the biouptake of substances.
Models for the simulation of chemical speciation and bioavailability, and for the prediction of toxicity.
Chemical Speciation & Bioavailability is a fully open access journal. This means all submitted articles will, if accepted, be available for anyone to read, anywhere, at any time. immediately on publication. There are no charges for submission to this journal.
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