Trace Metals in Sediments of Seven Coastal Lagoons of the Sabana - Camaguey Archipelago, Cuba
Por:
Gonzalez-De Zayas, Roberto, Barredo Yera, A., Manduca Artiles, M., Lestayo Gonzalez, J. A., Castillo Sandoval, F. S., Merino-Ibarra, M.
Publicada:
3 abr 2021
Resumen:
Coastal lagoons are highly sensitive ecosystems from the ecological
point of view. Water samples to assess physicochemical parameters, as
well as sediments to measure trace metals (Cd, Cr, Cu, Ni, Pb, Zn and
Hg) were collected in seven coastal lagoons of the Sabana-Camaguey
Archipelago. Los Caimanes, Tortuguilla and La Salina lagoons showed high
salinity levels (>100.0 PSU). High concentrations of Total Nitrogen (TN,
up to 819.3 mmol/L) and Total Phosphorus (TP, up to 7.8 mmol/L) were
recorded in the lagoons with more impact from tourism development, such
as Las Coloradas, Larga, Los Caimanes and La Salina lagoons. Regarding
their relative abundance, metals ranked as follows: Ni > Zn > Cu > Cd >
Hg > Cr >Pb. Metal concentrations ranged within the following intervals:
Pb: < 50 mg/kg (all values below the quantification limit); Ni:
<12.5-115.7 mg/kg; Cd: <2.0-3.4 mg/kg; Zn: 5.2-81.4 mg/kg; Cu: <5.0-45.2
mg/kg; Cr: <25.0-156.4 mg/kg and Hg: <0.1-0.30 mg/kg. The concentrations
of trace metals were similar to those recorded in uncontaminated coastal
systems of Cuba and other parts of the world. Nevertheless, most trace
metals, except Hg, showed high concentrations at Site 1 of Laguna Las
Coloradas. Laguna Tortuguilla was the lagoon with the highest ecological
risk. Cd must be carefully monitored there, as concentrations detected
were high (up to 3.4 mg/kg), which poses an ecological risk for all the
lagoons.
Filiaciones:
Gonzalez-De Zayas, Roberto:
Ctr Estudios Geomat Ambientales & Marinos GEOMAR, Ave Ejercito Nacl, Mexico City, DF, Mexico
Univ Ciego Avila Carretera Moron, Fac Ciencias Tecn, Dept Hidraul, Ciego De Avila, Cuba
Barredo Yera, A.:
Univ Sao Paulo, Inst Quim, Sao Paulo, Brazil
Manduca Artiles, M.:
Inst Super Ciencias Tecnol & Aplicadas, Lab Anal Ambiental, Havana, Cuba
Lestayo Gonzalez, J. A.:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Posgrad Ciencias Mar & Limnol, Mexico City, DF, Mexico
Castillo Sandoval, F. S.:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Unidad Acad Ecol Marina, Mexico City, DF, Mexico
Merino-Ibarra, M.:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Unidad Acad Ecol Marina, Mexico City, DF, Mexico
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