Inorganic arsenic in holopelagic Sargassum spp. stranded in the Mexican Caribbean: Seasonal variations and comparison with international regulations and guidelines

IF 1.9 4区生物学 Q2 MARINE & FRESHWATER BIOLOGY Aquatic Botany Pub Date : 2023-09-01 DOI:10.1016/j.aquabot.2023.103674

Paulina Annette Ortega-Flores , Tristan Gobert , Lía Celina Méndez-Rodríguez , Elisa Serviere-Zaragoza , Solène Connan , Daniel Robledo , Yolanda Freile-Pelegrín , Juan Antonio de Anda Montañez , Matthieu Waeles

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引用次数: 2

Abstract

Due to the massive proliferation and stranding of holopelagic Sargassum spp. over the last decade, different strategies for the sustainable valorisation of Sargassum biomass have been explored and investigated. One limitation to the development of Sargassum biomass valorisation is related to its high arsenic (As) content. The toxicity of As depends on the chemical forms present and their oxidation or valence state, classified as inorganic and organic compounds, with the inorganic As compounds being much more toxic than the organic ones. The aim of the present study was to determine the inorganic arsenic (iAs) content in holopelagic Sargassum spp. for which almost no information on stranded biomass is available. In this study, we examined the iAs content in the three holopelagic Sargassum morphotypes collected over a seasonal cycle in 2018–2019. The iAs concentrations ranged from 12.7 to 62.9 mg kg⁻¹, representing 14.1–81.7% of total arsenic (TotAs). The iAs content was compared between species and seasons and discussed in the context of existing international regulations and guidelines.

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搁浅在墨西哥加勒比海的全海马尾藻中的无机砷:季节变化和与国际法规和准则的比较

在过去的十年中，由于马尾藻的大量繁殖和搁浅，人们探索和研究了马尾藻生物量可持续发展的不同策略。马尾藻生物质增值开发的一个限制与其高砷含量有关。砷的毒性取决于其存在的化学形式及其氧化或价态，分为无机化合物和有机化合物，无机砷化合物比有机砷化合物毒性大得多。本研究的目的是确定无机砷(iAs)含量的全藻藻属，其中几乎没有关于搁浅生物量的信息可用。在本研究中，我们检测了2018-2019年季节周期采集的三种全海马尾藻形态中的iAs含量。砷的浓度范围为12.7 ~ 62.9 mg kg−1，占总砷(TotAs)的14.1 ~ 81.7%。比较了不同物种和季节间的iAs含量，并在现有国际法规和指南的背景下进行了讨论。

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来源期刊

Aquatic Botany 生物-海洋与淡水生物学

CiteScore

3.80

自引率

5.60%

发文量

审稿时长

6 months

期刊介绍： Aquatic Botany offers a platform for papers relevant to a broad international readership on fundamental and applied aspects of marine and freshwater macroscopic plants in a context of ecology or environmental biology. This includes molecular, biochemical and physiological aspects of macroscopic aquatic plants as well as the classification, structure, function, dynamics and ecological interactions in plant-dominated aquatic communities and ecosystems. It is an outlet for papers dealing with research on the consequences of disturbance and stressors (e.g. environmental fluctuations and climate change, pollution, grazing and pathogens), use and management of aquatic plants (plant production and decomposition, commercial harvest, plant control) and the conservation of aquatic plant communities (breeding, transplantation and restoration). Specialized publications on certain rare taxa or papers on aquatic macroscopic plants from under-represented regions in the world can also find their place, subject to editor evaluation. Studies on fungi or microalgae will remain outside the scope of Aquatic Botany.