Characterizing the Stoichiometry of Individual Metal Sulfide and Phosphate Colloids in Soils, Sediments, and Industrial Processes by Inductively Coupled Plasma Time-of-Flight Mass Spectrometry

Environmental Science & Technology, Год журнала: 2024, Номер 58(27), С. 12113 - 12122

Опубликована: Июнь 25, 2024

Size and purity of metal phosphate sulfide colloids can control the solubility, persistence, bioavailability metals in environmental systems. Despite their importance, methods for detecting characterizing diversity elemental composition these complex matrices are missing. Here, we develop a single-particle inductively coupled plasma time-of-flight mass spectrometry (sp-icpTOF-MS) approach to characterize compositions individual extracted from matrices. The stoichiometry was accurately determined particles known with an equivalent spherical diameter ≥∼200 nm. Assisted by machine learning (ML), new method could distinguish copper sulfides covellite (CuS), chalcocite (Cu2S), chalcopyrite (CuFeS2) 75% (for Cu2S) 99% CuFeS2) accuracy. Application sp-icpTOF-MS recovered natural samples revealed that iron (FeS) lake sediment contained ∼4% zinc impurities, whereas pure pyrite (FeS2) identified hydraulic fracturing wastewater confirmed selected area electron diffraction. Colloidal mercury offshore marine present as (HgS), geogenic HgS industrial process ∼0.08 wt % silver per Hg, enabling source apportionment using ML. X-ray absorption spectroscopy Hg predominantly metacinnabar (β-HgS) sample. determination impurities colloids, such FeS, may enable improved assessment origin, reactivity, potential.

Язык: Английский

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Removal and recovery of fluoride from wastewater via mixed calcium salts by fluidized bed induced crystallization technology

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131773 - 131773

Опубликована: Янв. 1, 2025

Язык: Английский

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The fate of antibiotics during phosphate recovery processes - A critical review

The Science of The Total Environment, Год журнала: 2025, Номер 968, С. 178829 - 178829

Опубликована: Фев. 18, 2025

Язык: Английский

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Evaluation of fenton-like oxidation coupled with struvite precipitation for the enhanced treatment of Cu-contaminated ammoniacal nitrogen-rich wastewater

Journal of Environmental Management, Год журнала: 2025, Номер 381, С. 125204 - 125204

Опубликована: Апрель 5, 2025

Язык: Английский

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Production of struvite by magnesium anode constant voltage electrolytic crystallisation from anaerobically digested chicken manure slurry

Environmental Research, Год журнала: 2022, Номер 214, С. 113991 - 113991

Опубликована: Авг. 9, 2022

Язык: Английский

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