Assessment of Heavy Metal Contamination in Two Edible Fish Species and Water from North Patagonia Estuary

被引:7
|
作者
Fierro, Pablo [1 ]
Tapia, Jaime [2 ]
Bertran, Carlos [1 ]
Acuna, Cristina [2 ]
Vargas-Chacoff, Luis [1 ,3 ]
机构
[1] Univ Austral Chile, Inst Marine Sci & Limnol, Independencia 641, Valdivia 5090000, Chile
[2] Univ Talca, Inst Chem & Nat Resources, Talca 3460000, Chile
[3] Univ Austral Chile, FONDAP IDEAL Ctr, Valdivia 5090000, Chile
来源
APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 06期
关键词
bioaccumulation; metal toxicity; silverside; puye; Odontesthes regia; Galaxias maculatus; lead poisoning; cadmium poisoning; ARAUCANIA REGION; TRACE-ELEMENTS; MUSCLE; COPPER; RIVER; BIOACCUMULATION; ACCUMULATION; SEDIMENTS; CHILE; LIVER;
D O I
10.3390/app11062492
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Estuaries worldwide have been severely degraded and become reservoirs for many types of pollutants, such as heavy metals. This study investigated the levels of Cd, Cu, Mn, Ni, Pb, and Zn in water and whole fish. We sampled 40 juvenile silversides Odontesthes regia and 41 juvenile puye Galaxias maculatus from the Valdivia River estuary, adjacent to the urban area in southern South America (Chile). Samples were analyzed using a flame atomic absorption spectrophotometer. In water samples, metals except Zn were mostly below the detection limits and all metals were below the maximum levels established by local guidelines in this estuary. In whole fish samples, concentrations of Cu, Zn, Pb, Mn, and Cd were significantly higher in puyes than in silversides. Additionally, Zn, Pb, and Mn were correlated to body length and weight in puyes, whereas Cd was correlated to body length in silversides. The mean concentration of heavy metals in silverside and puyes were higher than those reported in the literature. In silversides, all heavy metal levels were below the limits permitted by current legislation (FAO), whereas in puyes Pb and Cd levels were above the recommended maximum level established by international guidelines, therefore putting the human population at risk.
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页数:10
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