Molecular Drivers of Electron-Donating Capacity in Dissolved Black Carbon from Nitrogen-Rich Pyrogenic Carbon.

Xiaoxiao Zhang, Weijian Xu, Wenjing Tian, Eakalak Khan, Daniel C W Tsang

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Article in Environmental science & technology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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2 · The registry

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Xiaoxiao ZhangDepartment of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong,China.

Weijian XuDepartment of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong,China.

Wenjing TianDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

Eakalak KhanDepartment of Civil and Environmental Engineering and Construction, University of Nevada, Las Vegas, Nevada 89154-4015, United States.ORCID 0000-0002-6729-2170

Daniel C W TsangDepartment of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong,China.ORCID 0000-0002-6850-733X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dissolved black carbon (DBC) from nitrogen-rich feedstock-derived pyrogenic carbon may influence aquatic photochemistry and byproduct formation due to its electron-donating capacity (EDC). Yet, the molecular drivers of EDC remain unclear. Here, we developed an integrated analytical framework to characterize DBC leached from nitrogen-rich biochar pyrolyzed at 350, 450, and 550 °C (DBC350, DBC450, and DBC550) under simulated intermittent rainfall over 30 days. Through two-dimensional correlation spectroscopy (2D-COS) and Fourier transform ion cyclotron resonance mass spectrometry, we analyzed sequential responses and synergistic relationships of thousands of individual DBC molecules with various functional groups. The EDC increased with leaching time, particularly in DBC350, coinciding with a shift toward lower

Indexed as

CarbonNitrogenSootCharcoalElectronsCarbonCharcoalNitrogenSootblack carbon structuresdissolved pyrogenic carbondynamic leaching conditionsheterogeneous correlationsmolecular signaturessurface functional groups

Identifiers

PMID41368919

DOI10.1021/acs.est.5c09050

PMCPMC12810247

What Socratic holds

Textmetadata

LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.