Overview
A gold nanoparticle (AuNP)-based colorimetric sensor for As3+ detection was developed and tested in rice extract and water matrices. The paper reports spike-recovery experiments in rice samples to validate the method; no unspiked occurrence measurements of As in rice are provided.
Key numbers
- LOD, linear range, and recovery in rice extract and water in full paper.
- No occurrence data for As in rice; all rice tests are spiked spike-recovery validations.
Methods (brief)
AuNP colorimetric detection of As3+ (arsenite). Speciation-sensitive: detects As(III) specifically. Rice matrix spike-recovery validation. Not equivalent to LC-ICP-MS inorganic arsenic (iAs) occurrence measurement.
Implications
Certification: Method development; rice matrix validation but no occurrence data contribution. Courses: Demonstrates AuNP-based colorimetric sensors for arsenic; note As(III)-specific detection vs. regulatory iAs measurement.
Related evidence
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git.
| Commit | Date | Change | Description |
|---|---|---|---|
| 798aec225d | 2026-11-06 | major | 6 sections added; narrative text revised |
| db716d13d5 | 2026-11-04 | major | 6 sections added; narrative text revised |
| 49384c8e11 | 2026-11-04 | major | 6 sections added; narrative text revised |
| 59239f2c06 | 2026-11-04 | major | 6 sections added; narrative text revised |