Hwang and colleagues measured metals and arsenic species in salted foods and sea salts. Table 3 is salted fish and shrimp and is not sea salt. Quality assurance used spinach and rice reference materials, not salt. Inorganic arsenic (arsenite and arsenate) was below the detection limit. Arsenocholine, dimethylarsinic acid, and monomethylarsonic acid were below the detection limit.
Key numbers
Table 5 sea salt arsenobetaine, mg/kg: Korea 0.0621 ± 0.0131 (0.0410 to 0.0772); Vietnam 0.0421 ± 0.00302; China 0.0442 ± 0.00413; Australia 0.0482 ± 0.00610; New Zealand 0.0482 ± 0.00402. Prose prints arsenobetaine 0.042 to 0.062 mg/kg. Data gap: no sea-salt lead, cadmium, or total arsenic concentration is printed in the main text used here.
Methods (brief)
Arsenic species were separated by HPLC and measured by ICP-MS. Limits of detection are printed in µg/kg and are not converted into the mg/kg table.
Evidence fitness
The arsenobetaine rows support a sea-salt arsenic-species note. They do not support lead or cadmium, and below-detection inorganic arsenic is not a concentration.
Limitations
Reference materials were spinach and rice, not salt. Lead and cadmium are a data gap for sea salt in this paper.
Related evidence
Update history
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