Structure · dataset · 2026
Insight from Carbon and Nitrogen Isotope Fractionation of Sulfamethoxazole during Oxidative vs Reductive Transformation
Listed in ZivaHub and Deakin Research Online and DMU Figshare and UCL Research Data Repository — shown once because both records carry DOI 10.1021/acs.est.6c07718.s001
The antibiotic sulfamethoxazole (SMX) is frequently detected in aquatic systems, raising environmental concerns.
Description
Therefore, it is necessary to investigate its transformation pathways under diverse environmental conditions. Here, we explored information from stable isotope fractionation during reductive transformation of SMX with Fe(II)-amended goethite suspensions vs oxidative transformation with MnO<sub>2</sub>.
Transformation of SMX by surface-bound Fe(II) showed significant carbon isotope fractionation (ε<sub>C</sub> = −3.6‰ ± 0.1‰ and ε<sub>C</sub> = −2.9‰ ± 0.2‰, with and without buffer, respectively), pronounced nitrogen isotope fractionation (ε<sub>N</sub> = −12.8‰ ± 0.6‰ and ε<sub>N</sub> = −13.0‰ ± 0.2‰, with and without buffer, respectively), and evidence of transformation products that are consistent with initial reductive N–O bond cleavage.
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In contrast, reaction with MnO<sub>2</sub> caused normal carbon but inverse nitrogen isotope fractionation (ε<sub>C</sub> = −1.7‰ ± 0.1‰ and ε<sub>C</sub> = −2.7‰ ± 0.2‰, with and without buffer, respectively, ε<sub>N</sub> = +1.9‰ ± 0.2‰ without buffer) indicative of an initial oxidative electron transfer. Oxidation products were not easily identified by high-resolution mass spectrometry, emphasizing the importance of compound-specific isotope analysis (CSIA) as an alternative for detecting ongoing transformation.
Our study thus highlights the potential of CSIA to detect transformation in settings where concentration and product analysis would be inconclusive and to distinguish between reductive and oxidative transformation pathways of SMX in the environment.
Links
Where it is published
- DOI doi.org/10.1021/acs.est.6c07718.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Chemistry · Chemistry · Chemistry · Chemistry · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Ecology · Ecology · Ecology · Ecology · Genetics · Genetics · Genetics · Genetics · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Inorganic chemistry · Life Sciences · Life Sciences · Life Sciences · Life Sciences · Microbiology · Microbiology · Microbiology · Microbiology
- Inferred from text
- Mass spectrometry 75%
Provenance · 4 source records, 34 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34047270 | 12 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/34047270 | 12 d ago | JSON v1 |
| DMU Figshare | oai:figshare.com:article/34047270 | 12 d ago | JSON v1 |
| UCL Research Data Repository | oai:figshare.com:article/34047270 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].anzsrc:group:3103 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3103 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3103 | mapping · rdr ucl ac uk | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3103 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3105 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Genetics'] |
| concepts[field].anzsrc:group:3105 | mapping · rdr ucl ac uk | vocabulary-mapper@1.0.0 | keywords['Genetics'] |
| concepts[field].anzsrc:group:3105 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Genetics'] |
| concepts[field].anzsrc:group:3105 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Genetics'] |
| concepts[field].anzsrc:group:3107 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Microbiology'] |
| concepts[field].anzsrc:group:3107 | mapping · rdr ucl ac uk | vocabulary-mapper@1.0.0 | keywords['Microbiology'] |
| concepts[field].anzsrc:group:3107 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Microbiology'] |
| concepts[field].anzsrc:group:3107 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Microbiology'] |
| concepts[field].anzsrc:group:3402 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Inorganic Chemistry'] |
| concepts[field].anzsrc:group:3402 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Inorganic Chemistry'] |
| concepts[field].anzsrc:group:3402 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Inorganic Chemistry'] |
| concepts[field].anzsrc:group:3402 | mapping · rdr ucl ac uk | vocabulary-mapper@1.0.0 | keywords['Inorganic Chemistry'] |
| concepts[field].local:field:chemistry | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[modality].local:modality:mass-spectrometry | enrichment · zivahub uct ac za | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |