Handayani et al. 2019 - Kandungan Logam Berat Merkuri Pada Ikan Tuna (Yellowfin dan Bigeye) dan Tuna-like (Swordfish) Hasil Tangkapan dari Samudera Hindia dan Samudera Pasifik
This study analyzed 895 secondary official-control records for mercury in yellowfin tuna, bigeye tuna, and swordfish from Indian and Pacific Ocean catch areas associated with Indonesia.
Key numbers
Source units are mg/kg.
- Dataset size: 895 mercury testing records.
- Yellowfin tuna: 0.06 +/- 0.06 to 0.33 +/- 0.18.
- Bigeye tuna: 0.05 +/- 0.02 to 0.33 +/- 0.14.
- Swordfish: 0.08 +/- 0.01 to 1.61 +/- 0.02, increasing with fish weight.
- 34% of swordfish over 50 kg from the Indian Ocean exceeded 1.0 mg/kg mercury.
- Mercury in tuna and tuna-like fish from the Indian Ocean was significantly higher than from the Pacific Ocean.
Methods
The study used secondary official-control data from BKIPM and analyzed associations with fish weight and ocean origin using regression and t-tests. Mercury was measured by AAS.
Implications
The source is strong context for ocean-origin and fish-weight stratification in tuna/swordfish mercury. Do not pool Indian and Pacific Ocean values silently.
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Verification notes
- Source identity checked against DOI 10.15578/jpbkp.v14i1.572 and the downloaded PDF.
- The study reports total mercury, not methylmercury.
Page history
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