葡萄牙阿威罗泻湖Mira、Ilhavo和Ovar河道沉积物的化学矿物学特征

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Ciencias Marinas Pub Date : 2023-03-14 DOI:10.7773/cm.v31i12.90

Fernando T. Rocha, Eduardo Silva, Cristina Bernardes, Jesus Vidinha, Carla Patinha

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引用次数: 11

摘要

根据系统采集的沉积物样品的沉积学、古生态学、地球化学和矿物学特征，对阿威罗潟湖进行了古环境重建。本文介绍了Aveiro泻湖沉积物样品中细粒组分(<63µm)和粘土组分(<2µm)的化学和矿物学组成变化的结果，这些样品主要来自Mira、ÿlhavo和Ovar通道附近的潮间带平原和潮下沉积物。在参数分析的基础上，建立了泻湖的分区图。结果表明:阿威罗湖表层和近表层沉积物捕获了大量Cu、Pb、Co、Ni、Cd、Zn、Fe、Mn和Cr等微量金属，它们被认为是部分吸附的，特别是在粉质和粘土颗粒上，并以铁和锰的氢氧化物形式共沉淀在沉积物的最上层。建立了沉积物中痕量金属浓度与粘土含量和半定量测定的粘土矿物种类之间的一系列具有统计学意义的关系。

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Chemical and mineralogical characterization of the sediments from the Mira, Ilhavo and Ovar channels of Aveiro Lagoon (Portugal)

The paleoenvironmental reconstruction of Aveiro Lagoon is being carried out based on the sedimentological, paleoecological, geochemical and mineralogical characterization of sediment samples collected systematically in the lagoon. This paper presents results concerning the changes in the chemical and mineralogical composition of the fine fraction (<63 µm) and the clay fraction (<2 µm) in sediment samples from Aveiro Lagoon, mainly collected from the lower intertidal plain and subtidal deposits located along the Mira, ÿlhavo and Ovar channels. A zonography of the lagoon was established based on the parameters analyzed. The results show that the surface and near-surface sediments of Aveiro Lagoon trap relatively large quantities of trace metals, such as Cu, Pb, Co, Ni, Cd, Zn, Fe, Mn and Cr, considered to be partially adsorbed, particularly on silty and clayey particles, and coprecipitated on Fe and Mn oxyhydroxide forms precipitated in the topmost layers of sediments. Series of statistically significant relationships were established between trace metal concentrations and clay content and semi-quantitatively determined clay mineral species in the sediments.

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来源期刊

Ciencias Marinas 生物-海洋与淡水生物学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.