spp. Cd 0.62 ± 0.11, Cu 0.38 ± 0.24, Hg 0.18 ± 0.12, Zn 8.1 ± 3.4; and sharks Cd 0.64 ± 0.07, Cu 0.51 ± 0.12, Hg 0.39 ± 0.23, Zn 8.2 ± 3.0 mg/kg ww. Cadmium content in fish from the Mexican Pacific coast was higher than the maximum limit, according to Mexican standards. Mercury levels complied with Mexican legislation and lead levels were below the limit of detection.
Garzón-Raygoza et al. (Tue,) studied this question.