The arsenic spreading over thallus of Saccharina latissima of different habitats of the Barents Sea

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Panova, E, Voskoboinikov, G
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2021
• Subjects: Barents Sea
• Online Access: http://dx.doi.org/10.1088/1755-1315/937/2/022057; https://iopscience.iop.org/article/10.1088/1755-1315/937/2/022057; https://iopscience.iop.org/article/10.1088/1755-1315/937/2/022057/pdf

Abstract The algae Saccharina latissima (Phaeophyceae) and bottom sediment were studied in two places of its habitat in the Zelenetskaya Bay of the Barents Sea: 1) in the zone of shipping traffic and ship parking (ZST&SP) and 2) algae plantations (AP) - the background part of the bay. According to the results of scanning electron microscopy and micro-X-ray spectral analysis, an active new formation of framboidal pyrite, iron oxides-hydroxides, and salt crystals were founded in the bottom sediment in the ZCST&SP of the bay. In the structure of the rhizoids of the thallom algae, inclusions of bottom sediment particles were revealed. The ICP MS method showed that the arsenic content in the S. latissima thallom significantly exceeds its level of presence in the bottom sediment. The maximum content of arsenic in algae from both habitats is determined in the rhizoids, and the lowest in the young part of the plate (meristem). The bottom sediment and thallom of S. latissima from the ZCST&SP contain two to three times more arsenic than the algae on the plantation.