Origin and fate of nanoparticles in marine water - preliminary results

Bożena Graca , Aleksandra Zgrundo , Danuta Zakrzewska , Monika Rzodkiewicz , Jakub Karczewski

Abstract

The number, morphology and elemental composition of nanoparticles (<100 nm) in marine water was investigated using Variable Pressure Scanning Electron Microscopy (VP-SEM) and Energy-dispersive X-ray spectroscopy (EDS). Preliminary research conducted in the Baltic Sea showed that the number of nanoparticles in seawater varied from undetectable to 380 (x10(2)) cm(−3). Wind mixing and density barriers (thermocline) had a significant impact on the abundance and distribution of nanoparticles in water. Many more nanoparticles (mainly nanofibers) were detected in periods of intensive primary production and thermal stratification of water than at the end of the growing season and during periods of strong wind mixing. Temporal and spatial variability of nanoparticles as well as air mass trajectories indicated that the analysed nanofibers were both autochthonous and allochthonous (atmospheric), while the nanospheres were mainly autochthonous. Chemical composition of most of analysed nanoparticles indicates their autochthonous, natural (biogenic/geogenic) origin. Silica nanofibers (probably the remains of flagellates), nanofibers composed of manganese and iron oxides (probably of microbial origin), and pyrite nanospheres (probable formed in anoxic sediments), were all identified in the samples. Only asbestos nanofibers, which were also detected, are probably allochthonous and anthropogenic.
Author Bożena Graca ZChMiOŚM
Bożena Graca,,
- Division of Marine Chemistry and Environmental Protection
, Aleksandra Zgrundo ZFEM
Aleksandra Zgrundo,,
- Division of Marine Ecosystems Functioning
, Danuta Zakrzewska ZChMiOŚM
Danuta Zakrzewska,,
- Division of Marine Chemistry and Environmental Protection
, Monika Rzodkiewicz
Monika Rzodkiewicz,,
-
, Jakub Karczewski
Jakub Karczewski,,
-
Journal seriesChemosphere, ISSN 0045-6535
Issue year2018
Vol206
Pages359-368
Publication size in sheets0.5
Keywords in Englishnanopollutant, nanomaterial, identification, sea water, Baltic
DOIDOI:10.1016/j.chemosphere.2018.05.022
URL https://doi.org/10.1016/j.chemosphere.2018.05.022
Languageen angielski
Score (nominal)35
ScoreMinisterial score = 35.0, 24-05-2018, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 24-05-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.208 (2) - 2016=4.506 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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