Department of Chemistry and CESAM/REQUIMTE, University of Aveiro, Portugal; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Matosinhos, Portugal.
Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Matosinhos, Portugal.
Food Chem. 2021 May 1;343:128438. doi: 10.1016/j.foodchem.2020.128438. Epub 2020 Oct 21.
Concentrations of 16 elements (K, Na, Mg, Ca, Fe, Zn, Hg, Se, As, Cu, Cd, Mn, Ni, Cr, Pb and Co) were determined in dorsal white and dark muscle of Xiphias gladius, sampled at various positions of a single swordfish and at the same position of eight specimens. Hg was quantified by thermal decomposition atomic absorption spectrometry (LECO AMA-254) and the rest of the elements by inductively coupled plasma optical emission spectrometry (ICP OES) or mass spectrometry (ICP MS). Element partitioning differed in dark and white muscle. Dark muscle was particularly enriched in Fe (median 13 times) and Cu (9) and moderately enhanced in Se, Mn, Zn and Cd (2.8-4.0). Dark:white ratios of the potentially toxic elements (As, Cr, Hg, Ni and Pb) varied from 0.9 to 1.4, pointing to a similar distribution between the two muscles types and indicating no additional risk in the consumption of dark muscle.
测定了剑鱼背部白肌和黑肌中 16 种元素（K、Na、Mg、Ca、Fe、Zn、Hg、Se、As、Cu、Cd、Mn、Ni、Cr、Pb 和 Co）的浓度，这些样本取自同一条剑鱼的不同部位和 8 个标本的同一部位。Hg 通过热解原子吸收光谱法（LECO AMA-254）进行定量，其余元素通过电感耦合等离子体发射光谱法（ICP OES）或质谱法（ICP MS）进行定量。黑肌和白肌中的元素分布不同。黑肌中铁（中位数为 13 倍）和铜（9 倍）特别丰富，硒、锰、锌和镉（2.8-4.0 倍）适度增加。潜在有毒元素（As、Cr、Hg、Ni 和 Pb）的黑肌：白肌比值在 0.9 到 1.4 之间变化，表明这两种肌肉类型之间的分布相似，食用黑肌不会带来额外的风险。
