Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de Junio de 1520, Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P. 07340, Ciudad de Mexico (CDMX), Mexico.
Laboratorio de Ecología de Pinnípedos "Burney J. Le. Boeuf", Centro Interdisciplinario de Ciencias Marinas (CICIMAR), Instituto Politécnico Nacional (IPN), Avenida IPN, s/n Colonia Playa Polo de Santa Rita, C.P. 23096, La Paz, Baja California Sur, Mexico.
Environ Geochem Health. 2019 Jun;41(3):1075-1089. doi: 10.1007/s10653-018-0198-5. Epub 2018 Sep 26.
Trace element (Fe, Mn, Cr, Cu, Ni, Co, Pb, Zn, Cd, As, Hg) concentrations were assessed in marine organisms (n = 52) sampled from the Magdalena Bay lagoon complex in Baja California Sur, Mexico, a pristine marine environment. The overall trend of metal concentrations (dry weight) in the organisms was found to be Fe > Zn > Cd > Cu > Mn > Pb > As > Hg > Ni > Cr > Co. Bivalve mollusks (53.83 mg kg) contained twofold higher levels of metals than the finfishes (20.77 mg kg). Calculated BioConcentration Factor (BCF) values showed that dissolved Mn is readily bioavailable to the organisms, whereas Biota Sediment Accumulation Factor (BSAF) indicated high values for Zn, Cu and Cd. Cd and As levels were observed to be increasing with the trophic levels. Toxic elements, namely Pb, Cd and As in the studied fish species were found to be higher than the values recommended for human seafood consumption. The study provides a comprehensive baseline report on trace element bioaccumulation in several marine organisms that will aid in developing effective conservation strategies of the highly biodiverse lagoon complex.
微量元素（Fe、Mn、Cr、Cu、Ni、Co、Pb、Zn、Cd、As、Hg）浓度在从墨西哥下加利福尼亚州马格达莱纳湾泻湖复杂的海洋生物（n=52）中进行了评估，这是一个原始的海洋环境。研究发现，这些生物体中的金属浓度（干重）的总体趋势为 Fe＞Zn＞Cd＞Cu＞Mn＞Pb＞As＞Hg＞Ni＞Cr＞Co。双壳类软体动物（53.83 毫克/千克）中的金属含量是硬骨鱼类（20.77 毫克/千克）的两倍。计算出的生物浓缩系数（BCF）值表明，溶解态的 Mn 很容易被生物利用，而生物沉积物积累系数（BSAF）则表明 Zn、Cu 和 Cd 的含量较高。Cd 和 As 的水平随着营养水平的增加而增加。在所研究的鱼类中，有毒元素 Pb、Cd 和 As 的含量高于人类海产品消费的推荐值。该研究提供了关于几种海洋生物中微量元素生物积累的综合基线报告，这将有助于制定高度多样化泻湖复合体的有效保护策略。
