Laminaria kelps impact iodine speciation chemistry in coastal seawater

Laminaria kelps impact iodine speciation chemistry in coastal seawater
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海带影响沿海海水中的碘形态化学

DOI:
10.1016/j.ecss.2021.107531
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发表时间:
2021
期刊:
Estuarine, Coastal and Shelf Science
影响因子:
--
通讯作者:
Carrano M
Carrano M
中科院分区:
--
文献类型:
--
作者:
Carrano M

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海带(Laminaria digitalata)使用碘化物作为独特的无机抗氧化剂来保护其表面和质外体空间免受臭氧、过氧化氢和超氧化物等活性氧的影响,这对大气和海洋化学以及区域气候过程具有影响。如果海带被海水覆盖,就会导致碘化物渗入周围的海水中。在这项研究中,海带的影响Laminaria digitalata,L.海珀博雷亚,L.基于潜水员操作的原位采样,在奥本(苏格兰阿盖尔)和罗斯科夫(法国布列塔尼)两个地点探索了 ochroleuca 和 Saccharina latissima 的碘形态化学。随后对海水样品进行伏安分析,并通过 ICP-MS 测定菌体组织中可提取的碘浓度。主要结果是海带菌体附近的碘化物浓度强烈增加,特别是在低潮时,而与开放沿海水域和开放海洋浓度相比,碘酸盐浓度下降。
Kelp (Laminaria digitata) uses iodide as a unique inorganic antioxidant to protect its surface and apoplastic space against reactive oxygen species such as ozone, hydrogen peroxide and superoxide, with implications for atmospheric and marine chemistry as well as regional climatic processes. If kelp is covered by seawater, this results in iodide leaching into surrounding sea water. In this study, the influence of the kelpsLaminaria digitata,L. hyperborea,L. ochroleucaandSaccharina latissimaon iodine speciation chemistry was explored at two sites in Oban (Argyll, Scotland) and Roscoff (Brittany, France) based on diver-operatedin situsampling. Seawater samples were subsequently analysed voltammetrically, accompanied by determination of extractable iodine concentrations in the tissues of the thalli surveyed by ICP-MS. The main result is that iodide concentrations in the vicinity of kelp thalli are strongly enhanced, especially at low tide, while iodate concentrations are decreased in comparison to open coastal water and open ocean concentrations.
巨藻Macrocystis Pyrifera(褐藻纲)碘代谢的某些方面。
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