{"id":1184,"date":"2021-12-08T09:26:53","date_gmt":"2021-12-08T09:26:53","guid":{"rendered":"http:\/\/merfish.eu\/?p=1184"},"modified":"2023-03-10T10:44:11","modified_gmt":"2023-03-10T10:44:11","slug":"merfish-publication-in-biomineralization-of-mercury","status":"publish","type":"post","link":"https:\/\/merfish.eu\/index.php\/2021\/12\/08\/merfish-publication-in-biomineralization-of-mercury\/","title":{"rendered":"New insights into the biomineralization of mercury selenide nanoparticles through stable isotope analysis in giant petrel tissues."},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><em><strong>Journal of Hazardous Materials<\/strong><\/em> <\/h2>\n\n\n\n<p>DOI: <a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1016\/j.jhazmat.2021.127922\" target=\"_blank\">https:\/\/doi.org\/10.1016\/j.jhazmat.2021.127922<\/a><\/p>\n\n\n\n<p>New article has been published in Science direct  in New insights into the biomineralization of mercury selenide nanoparticles through stable isotope analysis in giant petrel tissues. <\/p>\n\n\n\n<p>Multipartner research article (IPREM-CNRS, PS Analytical, CEBC, LIENS)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p id=\"sp0025\">Tiemannite (HgSe) is considered the end-product of methylmercury (MeHg) demethylation in vertebrates. The biomineralization of HgSe nanoparticles (NPs) is understood to be an efficient MeHg detoxification mechanism; however, the process has not yet been fully elucidated. In order to contribute to the understanding of complex Hg metabolism and HgSe NPs formation, the Hg isotopic signatures of 40 samples of 11 giant petrels were measured. This seabird species is one of the largest avian scavengers in the Southern Ocean, highly exposed to MeHg through their diet, reaching Hg concentrations in the liver up to more than 900\u00a0\u00b5g\u00a0g<sup>-1<\/sup>. This work constitutes the first species-specific isotopic measurement (\u03b4<sup>202<\/sup>Hg, \u0394<sup>199<\/sup>Hg) of HgSe NPs in seabirds and the largest characterization of this compound in biota. Similar \u03b4<sup>202<\/sup>Hg values specifically associated to HgSe (\u03b4<sup>202<\/sup>Hg<sub>HgSe<\/sub>) and tissues (\u03b4<sup>202<\/sup>Hg<sub>bulk<\/sub>) dominated by inorganic Hg species were found, suggesting that no isotopic fractionation is induced during the biomineralization step from the precursor (demethylated) species. In contrast, the largest variations between \u03b4<sup>202<\/sup>Hg<sub>bulk<\/sub> and \u03b4<sup>202<\/sup>Hg<sub>HgSe<\/sub> were observed in muscle and brain tissues. This could be attributed to the higher fraction of Hg present as MeHg in these tissues. Hg-biomolecules screening highlights the importance of the isotopic characterization of these (unknown) complexes.<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"371\" height=\"200\" src=\"https:\/\/merfish.eu\/wp-content\/uploads\/2023\/03\/image-1.png\" alt=\"\" class=\"wp-image-1369\" srcset=\"https:\/\/merfish.eu\/wp-content\/uploads\/2023\/03\/image-1.png 371w, https:\/\/merfish.eu\/wp-content\/uploads\/2023\/03\/image-1-300x162.png 300w\" sizes=\"(max-width: 371px) 100vw, 371px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0304389421028910\">https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0304389421028910<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.1016\/j.jhazmat.2021.127922\">https:\/\/doi.org\/10.1016\/j.jhazmat.2021.127922<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Journal of Hazardous Materials DOI: https:\/\/doi.org\/10.1016\/j.jhazmat.2021.127922 New article has been published in Science direct in New insights into the biomineralization of mercury selenide nanoparticles through stable isotope analysis in giant petrel tissues. Multipartner research article (IPREM-CNRS, PS Analytical, CEBC, LIENS) Abstract Tiemannite (HgSe) is considered the end-product of methylmercury (MeHg) demethylation in vertebrates. The biomineralization [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1185,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,9],"tags":[],"class_list":["post-1184","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sample","category-publications"],"_links":{"self":[{"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/posts\/1184","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/comments?post=1184"}],"version-history":[{"count":5,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/posts\/1184\/revisions"}],"predecessor-version":[{"id":1370,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/posts\/1184\/revisions\/1370"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/media\/1185"}],"wp:attachment":[{"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/media?parent=1184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/categories?post=1184"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/merfish.eu\/index.php\/wp-json\/wp\/v2\/tags?post=1184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}