巴西东北部沿海海藻的无机元素特征。
Profile of inorganic elements of seaweed from the Brazilian Northeast coast.
机构信息
Laboratory for Applied Chemistry Studies (LEQA), Department of Analytical and Physical Chemistry, Science Center, Federal University of Ceara, Fortaleza, CE 60455-760, Brazil.
Laboratory of Algae Biotechnology and Bioprocesses (BioAP), Department of Biochemistry and Molecular Biology, Science Center, Federal University of Ceara, Fortaleza, CE 60455-760, Brazil.
出版信息
Mar Pollut Bull. 2024 May;202:116413. doi: 10.1016/j.marpolbul.2024.116413. Epub 2024 Apr 26.
The contents of 24 elements were determined in seven species of macroalgae collected in Ceara-Brazil, in the rainy and dry seasons of 2022. The samples were digested, and the analytes were quantified by ICP-OES and Hg by direct analyzer. The CRM CD-200 was analyzed for accuracy and obtained recoveries were higher than 95 %. The seaweed species have different inorganic element profiles with predominant elements being: Ca, K, Na, Mg and P. The Sargassum vulgare species stood out for its Hg and As contents (1.479 ± 0.005 mg kg and 172 ± 6 mg kg, both in the rainy seasons). Ulva lactuca attracted attention for its high concentration of V (46.4 ± 3.4 mg kg, rainy season). In general, the elemental content levels in the macroalgae samples were higher in the rainy season. Long-term studies to comprehend the effect of seasonality on the elemental composition of seaweed must be carried out.
于 2022 年雨季和旱季，在巴西塞阿拉采集了七种大型藻类并对其 24 种元素的含量进行了测定。采用消解的方法对样品进行处理，利用电感耦合等离子体发射光谱仪（ICP-OES）和直接进样分析汞（Hg）的含量。对 CRM CD-200 进行了准确度分析，获得的回收率均高于 95%。不同藻类的无机元素含量谱不同，优势元素为 Ca、K、Na、Mg 和 P。在雨季，皱波角叉菜（Sargassum vulgare）的 Hg 和 As 含量（分别为 1.479±0.005mg/kg 和 172±6mg/kg）较高。而在雨季，绿球藻（Ulva lactuca）因其高浓度的 V（46.4±3.4mg/kg）而受到关注。总体而言，大型藻类样品中元素含量在雨季较高。必须进行长期研究以了解季节性对海藻元素组成的影响。
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