Frías-Espericueta M G, Ramos-Magaña B Y, Ruelas-Inzunza J, Soto-Jiménez M F, Escobar-Sánchez O, Aguilar-Juárez M, Izaguirre-Fierro G, Osuna-Martínez C C, Voltolina D
Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen s/n, 82000, Mazatlán, Sinaloa, Mexico.
Programa de Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, México D.F., Mexico.
Environ Monit Assess. 2016 Nov;188(11):629. doi: 10.1007/s10661-016-5645-0. Epub 2016 Oct 21.
We determined total Hg and Se contents of hepatopancreas, exoskeleton, and muscle, and the Se:Hg molar ratios in the muscle of shrimps Farfantepenaeus californiensis and Litopenaeus stylirostris caught in NE Pacific Mexican waters. Total Hg mean values in muscle, hepatopancreas, and exoskeleton were 0.31 ± 0.26, 0.28 ± 0.29, and 0.24 ± 0.06 μg g, and 0.46 ± 0.46, 0.41 ± .034, and 0.24 ± 0.06 μg g for F. californiensis and L. stylirostris, respectively. In all tissues, the mean concentrations of Se tended to be close to one order of magnitude higher than the respective Hg values. In F. californiensis, the hepatopancreas of the larger commercial size had significantly (p < 0.05) higher Hg content than smaller sizes, but correlations size-Hg concentration calculated for each tissue of either species were not significant. The Hg content of the muscle of all commercial sizes of both species was lower than the permissible limit and their Se:Hg ratios in all sizes were higher than 1, indicating low risk for human consumption.
我们测定了在墨西哥东北太平洋海域捕获的加利福尼亚对虾（Farfantepenaeus californiensis）和斯氏滨对虾（Litopenaeus stylirostris）的肝胰腺、外骨骼和肌肉中的总汞和硒含量，以及肌肉中的硒汞摩尔比。加利福尼亚对虾和斯氏滨对虾肌肉、肝胰腺和外骨骼中的总汞平均值分别为0.31±0.26、0.28±0.29和0.24±0.06μg/g，以及0.46±0.46、0.41±0.34和0.24±0.06μg/g。在所有组织中，硒的平均浓度往往比各自的汞值高近一个数量级。在加利福尼亚对虾中，商业规格较大的个体的肝胰腺汞含量显著（p<0.05）高于较小规格的个体，但对任何一个物种的每个组织计算的尺寸-汞浓度相关性均不显著。两种虾所有商业规格的肌肉汞含量均低于允许限量，且所有规格的硒汞比均高于1，表明人类食用风险较低。
