Fig. 2.
(a) THAA concentration (powder) for unheated intracrystalline Strombus, Chicoreus, Anadara, Tibia and Trochus samples. Note that only Strombus and Chicoreus intracrystalline values can be considered significantly higher than the limit of detection. The Limit Of Detection (LOD) was calculated on the basis of the amino acid concentration detected in procedural blanks used in this study: LOD = Xblank + k∗σblank; where Xblank is the mean of the blank measures, σblank is the standard deviation of the blank measures, and k = 3. (b) Loss of amino acids in water for Strombus and Chicoreus after 48 h of isothermal heating at 140 °C, compared to the LOD.