Ralph R. Torres
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View article: PREPRINT "Comparability of Liquid Chromatography Tandem Mass Spectrometry Analysis of Dissolved Organic Matter Across Laboratories"
PREPRINT "Comparability of Liquid Chromatography Tandem Mass Spectrometry Analysis of Dissolved Organic Matter Across Laboratories" Open
Non-targeted liquid-chromatography tandem high-resolution mass-spectrometry (LC-MS/MS) is increasingly applied for the structure-resolved chemical analysis of dissolved organic matter (DOM). With new developments in mass spectrometry instr…
View article: Identifying wastewater chemicals in coastal aerosols
Identifying wastewater chemicals in coastal aerosols Open
The Tijuana River, at the US-Mexico border, discharges millions of gallons of wastewater daily—sewage, industrial waste, and runoff—into the Pacific Ocean, making it the dominant source of coastal pollution in this region. This study exami…
View article: Short-Term Spatiotemporal Variability in Seawater Carbonate Chemistry at Two Contrasting Reef Locations in Bocas del Toro, Panama
Short-Term Spatiotemporal Variability in Seawater Carbonate Chemistry at Two Contrasting Reef Locations in Bocas del Toro, Panama Open
There is growing concern about the effects of ocean acidification (OA) on coral reefs, with many studies indicating decreasing calcium carbonate production and reef growth. However, to accurately predict how coral reefs will respond to OA,…
View article: Two-Dimensional Liquid Chromatography Tandem-Mass Spectrometry Untangles the Deep Metabolome of Marine Dissolved Organic Matter
Two-Dimensional Liquid Chromatography Tandem-Mass Spectrometry Untangles the Deep Metabolome of Marine Dissolved Organic Matter Open
Dissolved organic matter (DOM) is one of the most complex chemical mixtures and plays a central role in biogeochemical cycles across our ecosphere. Despite its importance, DOM remains poorly understood at the molecular level. Over the last…
View article: Evaluation of Data-Dependent MS/MS Acquisition Parameters for Non-Targeted Metabolomics and Molecular Networking of Environmental Samples: Focus on the Q Exactive Platform
Evaluation of Data-Dependent MS/MS Acquisition Parameters for Non-Targeted Metabolomics and Molecular Networking of Environmental Samples: Focus on the Q Exactive Platform Open
Non-targeted liquid chromatography-tandem mass spectrometry (LC-MS/MS) is a widely used tool for metabolomics analysis, enabling the detection and annotation of small molecules in complex environmental samples. Data-dependent acquisition (…
View article: Evaluation of Data Dependent MS/MS Acquisition Parameters for Non-targeted Metabolomics and Molecular Networking of Environmental Samples - Focus on the Q Exactive Platform
Evaluation of Data Dependent MS/MS Acquisition Parameters for Non-targeted Metabolomics and Molecular Networking of Environmental Samples - Focus on the Q Exactive Platform Open
Non-targeted liquid chromatography tandem mass spectrometry (LC-MS/MS) is a widely used tool for the detection and annotation of small molecules in complex environmental samples. Data Dependent Acquisition (DDA) of product ion spectra is t…
View article: Protocol for PPL Solid Phase Extraction for Dissolved Organic Matter (DOM) Sample Preparation for LC-MS/MS Analysis v1
Protocol for PPL Solid Phase Extraction for Dissolved Organic Matter (DOM) Sample Preparation for LC-MS/MS Analysis v1 Open
Authors: Monica Thukral, Irina Koester, Daniel Petras, Ralph Riley Torres, Allegra Aron, Emily Gentry, Xavier Siwe-Noundou, Rosemary Dorrington, Kerry McPhail, Aaron Hartmann, Lihini Aluwihare General Remarks: Protocol for PPL Solid Phase …
View article: Assessment of styrene‐divinylbenzene polymer (PPL) solid‐phase extraction and non‐targeted tandem mass spectrometry for the analysis of xenobiotics in seawater
Assessment of styrene‐divinylbenzene polymer (PPL) solid‐phase extraction and non‐targeted tandem mass spectrometry for the analysis of xenobiotics in seawater Open
Anthropogenic imprints have become a fundamental part of most ecosystems. Our chemical footprint is often detected using targeted approaches, whereas xenobiotics are embedded within the large pool of dissolved metabolites, altered by bioti…
View article: Non-targeted tandem mass spectrometry enables the visualization of organic matter chemotype shifts in coastal seawater
Non-targeted tandem mass spectrometry enables the visualization of organic matter chemotype shifts in coastal seawater Open
Urbanization along coastlines alters marine ecosystems including contributing molecules of anthropogenic origin to the coastal dissolved organic matter (DOM) pool. A broad assessment of the nature and extent of anthropogenic impacts on coa…
View article: Non-targeted tandem mass spectrometry enables the visualization of organic matter chemotype shifts in coastal seawater
Non-targeted tandem mass spectrometry enables the visualization of organic matter chemotype shifts in coastal seawater Open
Urbanization along coastlines alters marine ecosystems including contributing molecules of anthropogenic origin to the coastal dissolved organic matter (DOM) pool. A broad assessment of the nature and extent of anthropogenic impacts on coa…