Overview
Jiang and colleagues assessed organotin compounds in Hong Kong seafood after the 2017 local ban on organotin antifouling systems on vessel hulls. The extracted source is a ScienceDirect article-preview printout, but the abstract and snippets report direct occurrence and exposure numbers for 23 marine species collected in 2023. The analytes are organotin compounds, including TBT and TPT; they are tin-organic species and should not be pooled as total tin.
Key numbers
The abstract reports the following organotin occurrence and exposure findings:
| Finding | Source-reported value |
|---|---|
| Marine species analyzed | 23 Hong Kong marine species, including molluscs, crustaceans, and fishes |
| Target organotin standards named in the preview | monobutyltin (MBT), dibutyltin (DBT), tributyltin (TBT), monophenyltin (MPT), diphenyltin (DPT), and triphenyltin (TPT) |
| Total organotins concentration range | 11.8-747 ng/g ww |
| Highest total organotins species/value | Gerres septemfasciatus, 747 +/- 133 ng/g ww |
| Second source-highlighted high value | Johnius taiwanensis, 696 +/- 158 ng/g ww |
| Phenyltin share of organotins composition | > 85% in all biota samples |
| TPT share of total residues across species | 32.7-96.4% |
| Species where TPT dominated | more than 80% marine organisms in this study |
| TPT trophic magnification factor | 8.61 |
| Decline after legislation in four commercially important fish species | 73.2-95.7% |
| Dietary exposure to total organotins through seafood consumption | 1.07 to 525 ng/kg bw/day |
| Hazard index range | 0.001-0.93 |
The abstract states that total organotins exposure via seafood consumption was generally within the source’s safety threshold of 1 for general adults, while high consumption of fish species with high TPT concentration, including Gerres septemfasciatus and Johnius taiwanensis, could increase health risk.
Methods (brief)
The preview states that 23 marine species from Hong Kong waters were collected in 2023 across molluscs, crustaceans, and fishes. It names six organotin standards used in the study: MBT, DBT, TBT, MPT, DPT, and TPT; di-n-heptyltin dichloride was used as a surrogate standard, and ethyltri-n-propyltin was also named in the standards snippet. The extracted text does not include the full analytical method, limits of detection, species-by-species tables, or sample counts by species. Concentrations in the abstract are reported in ng/g ww.
Implications
This source contributes post-ban Hong Kong seafood organotin occurrence and exposure context across fish, molluscs, and crustaceans. It is especially useful because it separates phenyltins and TPT dominance from total organotin burden; downstream routing should keep organotin species distinct from inorganic tin or total tin (Sn). The page is evidence-tier B because the provided file is an article-preview printout and not the full article tables.
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 |
|---|---|---|---|
| b01ec52c31 | 2026-08-04 | major | 1 section added |
| 3171d069e3 | 2026-08-02 | major | 1 section added |
| 90a2f9a38e | 2026-07-30 | major | 1 section added and 1 removed |
| eaa8eeeedf | 2026-07-27 | major | 1 section added and 1 removed |
| aca5e2155a | 2026-06-09 | major | 1 section added |