Universidad Politécnica de Sinaloa, Carretera Municipal Libre Mazatlán Higueras Km 3, C.P, 82199, Mazatlán, Sinaloa, Mexico.
Instituto Tecnológico de Mazatlán, Calle Corsario 1, No. 203, C.P, 82070, Mazatlán, Sinaloa, Mexico.
Environ Sci Pollut Res Int. 2021 Mar;28(9):10909-10917. doi: 10.1007/s11356-020-11396-6. Epub 2020 Oct 26.
Mercury and selenium concentrations and Se:Hg molar ratio in edible muscle and hepatopancreas of the crab Callinectes arcuatus from coastal lagoons of northwest Mexico were determined using atomic absorption spectrophotometry. The three coastal lagoons were Santa María La Reforma (SMLR), Urías (UR), and Huizache-Caimanero (HC); samplings were carried out from December 2016 to October 2017. The mercury ranges in the muscle of C. arcuatus in SMLR, UR, and HC lagoons were 0.31-0.52, 0.15-0.45, and 0.22-0.55 μg g, respectively. In hepatopancreas, the values ranged from 0.08 to 0.15, 0.06 to 0.15, and 0.05 to 0.12 μg g in SMLR, UR, and HC lagoons, in that order. For selenium concentrations in C. arcuatus muscle, the ranges 11.64-20.14, 14.88-19.71, and 15.27-29.51 μg g were determined in SMLR, UR, and HC lagoons, respectively. While for hepatopancreas, the ranges were 34.34-44.13, 27.77-40.45, and 15.16-49.80 μg g, in that order. No significant relationships (p > 0.05) between mercury and selenium concentrations (in white meat and hepatopancreas) were observed in C. arcuatus carapace width and length. Se:Hg molar ratio values were 98.1 ± 20.8, 171.4 ± 81.6, and 176.8 ± 51.2 for SMLR, UR, and HC lagoons, in that order. This high ratio (> 1) in C. arcuatus edible muscle indicated that selenium concentration was sufficient to neutralize possible mercury toxicity, so it does not represent danger to humans when it is consumed.
采用原子吸收分光光度法测定了来自墨西哥西北部沿海泻湖的蟹 Callinectes arcuatus 的可食用肌肉和肝胰腺中的汞和硒浓度以及硒与汞的摩尔比。这三个沿海泻湖分别是圣玛丽亚拉雷福马（SMLR）、乌里亚斯（UR）和 Huizache-Caimanero（HC）；采样时间为 2016 年 12 月至 2017 年 10 月。SMLR、UR 和 HC 泻湖的蟹 C. arcuatus 肌肉中的汞含量范围分别为 0.31-0.52、0.15-0.45 和 0.22-0.55μg g。在肝胰腺中，SMLR、UR 和 HC 泻湖的汞含量分别为 0.08 至 0.15、0.06 至 0.15 和 0.05 至 0.12μg g。蟹 C. arcuatus 肌肉中的硒浓度范围分别为 11.64-20.14、14.88-19.71 和 15.27-29.51μg g。而肝胰腺中的硒浓度范围分别为 34.34-44.13、27.77-40.45 和 15.16-49.80μg g。蟹的甲壳宽度和长度与汞和硒浓度（在白肉和肝胰腺中）之间没有显著关系（p>0.05）。SMLR、UR 和 HC 泻湖的蟹 C. arcuatus 肌肉中的硒与汞摩尔比分别为 98.1 ± 20.8、171.4 ± 81.6 和 176.8 ± 51.2。蟹可食用肌肉中的高硒与汞摩尔比（>1）表明，硒浓度足以中和可能的汞毒性，因此当食用时对人类并不构成危险。
