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| Format: | Artículo científico |
| Sprache: | en |
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Environmental science & technology
2025
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| Online-Zugang: | https://pubmed.ncbi.nlm.nih.gov/40016117/ |
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| author | Antony, Runa Rossel, Pamela E Feord, Helen K Dittmar, Thorsten Tranter, Martyn Anesio, Alexandre Magno Benning, Liane G |
| author_facet | Antony, Runa Rossel, Pamela E Feord, Helen K Dittmar, Thorsten Tranter, Martyn Anesio, Alexandre Magno Benning, Liane G Antony, Runa Rossel, Pamela E Feord, Helen K Dittmar, Thorsten Tranter, Martyn Anesio, Alexandre Magno Benning, Liane G |
| collection | PubMed - marine biology |
| contents | Extraction Strategies for Profiling the Molecular Composition of Particulate Organic Matter on Glacier Surfaces. Antony, Runa Rossel, Pamela E Feord, Helen K Dittmar, Thorsten Tranter, Martyn Anesio, Alexandre Magno Benning, Liane G Ice Cover Particulate Matter Organic Chemicals Snow Pigmented microalgae thrive on supraglacial surfaces, producing "sticky" extracellular polymeric substances that combine into a mineral-organic matrix. Together, they enhance snow and ice melting by lowering the albedo. Understanding the chemical nature of particulate organic matter (POM) in this matrix is crucial in assessing its role in supraglacial carbon dynamics. We evaluated POM complexity in alga-rich snow and ice samples containing 0.3-6.4 wt % organic carbon (OC) via extractions with solvents of varying polarity, pH, and OM selectivity. Extraction yields were evaluated by OC analysis of the extracts, and the composition of extracted OM was analyzed using ultrahigh-resolution mass spectrometry. Individual hot water (HW), hydrochloric acid (HCl), and sodium hydroxide (NaOH) extractions achieved up to 87% efficiency, outperforming sequential, organic solvent-based extractions ( |
| format | Artículo científico |
| id | pubmed_40016117 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Environmental science & technology |
| record_format | pubmed |
| spellingShingle | Extraction Strategies for Profiling the Molecular Composition of Particulate Organic Matter on Glacier Surfaces. Antony, Runa Rossel, Pamela E Feord, Helen K Dittmar, Thorsten Tranter, Martyn Anesio, Alexandre Magno Benning, Liane G Ice Cover Particulate Matter Organic Chemicals Snow Extraction Strategies for Profiling the Molecular Composition of Particulate Organic Matter on Glacier Surfaces. Antony, Runa Rossel, Pamela E Feord, Helen K Dittmar, Thorsten Tranter, Martyn Anesio, Alexandre Magno Benning, Liane G Ice Cover Particulate Matter Organic Chemicals Snow Pigmented microalgae thrive on supraglacial surfaces, producing "sticky" extracellular polymeric substances that combine into a mineral-organic matrix. Together, they enhance snow and ice melting by lowering the albedo. Understanding the chemical nature of particulate organic matter (POM) in this matrix is crucial in assessing its role in supraglacial carbon dynamics. We evaluated POM complexity in alga-rich snow and ice samples containing 0.3-6.4 wt % organic carbon (OC) via extractions with solvents of varying polarity, pH, and OM selectivity. Extraction yields were evaluated by OC analysis of the extracts, and the composition of extracted OM was analyzed using ultrahigh-resolution mass spectrometry. Individual hot water (HW), hydrochloric acid (HCl), and sodium hydroxide (NaOH) extractions achieved up to 87% efficiency, outperforming sequential, organic solvent-based extractions ( |
| title | Extraction Strategies for Profiling the Molecular Composition of Particulate Organic Matter on Glacier Surfaces. |
| topic | Ice Cover Particulate Matter Organic Chemicals Snow |
| url | https://pubmed.ncbi.nlm.nih.gov/40016117/ |