Abstract
This study concerns contents of several organotin compounds, monobutyltin (MBT), dibutyltin (DBT), tributyltin (TBT), monophenyltin (MPhT), diphenyltin (DPhT) and triphenyltin (TPhT), in seafood. Seafood samples were collected from markets and coastal zone in Taiwan, and contents of organotins were analyzed by Grignard reagent derivation coupled with GC/FPD. Besides, the tolerable daily intake (TDI) of (TBT+DBT), mean body weight of Taiwan citizen and the consumption of seafood were used to derive the tolerable average residue level (TARL) of the compounds. The risk assessment was implemented by comparing the content to TARL.
The contents of TBT, DBT, MBT, TPhT, DPhT and MPhT in seafood ranged N. D~48.36 ng Sn/g wet wt., N. D~36.68 ng Sn/g wet wt., N. D~79.19 ng Sn/g wet wt., N. D~225.53 ng Sn/g wet wt., N. D~128.16 ng Sn/g wet wt., N. D ~ 95.44 ng Sn/g wet wt., respectively. Reference survey showed that mean body weight of Taiwan citizen is 54.42 Kg, and seafood consumption rate is 127.59 g/day/person. A TARL of 44.27 ng Sn/g wet wt. is derived accordingly. Of all the 71 samples, only 4 contain more (TBT+DBT) than the TARL. On the other hand, (TBT+DBT) contents weighed by consumed ratio averaged 3.87 ng Sn/g wet wt., which is far under the TARL. Different visions lead to the same conclusion that (TBT+DBT) content of seafood in Taiwan is far away from dangerous level.
This study also concluded that cooking process doesn¡¦t affect the contents of organotin compounds of seafood, and the Grignard reagents contribute to the TBT blank signal. Furthermore, the independence between organotins and factors such as classifications, sampling area or habitat was discussed.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0712102-113742 |
| Date | 12 July 2002 |
| Creators | Yeh, Chung-Han |
| Contributors | none, none, none |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712102-113742 |
| Rights | off_campus_withheld, Copyright information available at source archive |
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