Journal Title
Title of Journal: Water Air Soil Pollut
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Abbravation: Water, Air, and Soil Pollution
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Publisher
Springer Netherlands
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Authors: E C Machado W Machado L F Bellido S R Patchineelam A V B Bellido
Publish Date: 2008/02/22
Volume: 192, Issue: 1-4, Pages: 77-83
Abstract
The removal of 65Zn from tidal water by underlaying sediment cores collected in a mangrove forest and a tidal creek that drains this forest in Sepetiba Bay SE Brazil was investigated After 30h experiments in laboratory microcosms the 65Zn halfremoval times from tidal creek and mangrove forest sediments were 87 ± 18 and 92 ± 09 h respectively Depth penetration of 65Zn was mainly restricted to the upper 3 cm in mangrove forest cores while detectable 65Zn activities were found in all layers 0–7 cm depth of tidal creek cores An unexpected 65Zn release back to the overlaying water was observed for one of the tidal creek experiments in the 12–18 h interval corresponding to a return of 17 of the initial 65Zn activity in overlaying water suggesting a reversibility of the 65Zn removal process eg by adsorption in tidal creek sediments The results indicate that mangrovevegetated sediments allowed a lower vertical mobility of Zn than observed in creek sediments and mangrove sediments appear to be less susceptible to a reversion in the process of zinc removal from overlaying water suggesting a greater capacity to retain this metal near the water–sediment interface This first radiotracer approach on the mangrove sediments removal of Zn from tidal waters supports earlier experimental studies employing stable Zn contributing for a better understanding of the metal uptake kinetics by such sediments and suggesting that these sediments act as active sinks for trace metalsWe thank the Radiation Protection and Dosimetry Institute/Brazilian Nuclear Energy Council IRD/CNEN for the supply of the radiotracer used in the present study EC Machado and W Machado thank the financial support from the Brazilian Research Council CNPq This research was developed as part of the CAPES/COFECUB Program We thank the useful comments from two anonymous referees
Keywords:
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Other Papers In This Journal:
- Changes in Fatty Acid Composition and Content of Two Plants ( Lolium perenne and Trifolium repens ) Grown During 6 and 18 Months in a Metal (Pb, Cd, Zn) Contaminated Field
- Effects of Soil Amelioration and Tree Planting on Restoration of an Air-Pollution Damaged Forest in South Korea
- Stable Isotope and Chloride, Boron Study for Tracing Sources of Boron Contamination in Groundwater: Boron Contents in Fresh and Thermal Water in Different Areas in Greece
- Evaluation of Biodegradability and Biodegradation Kinetics for Anionic, Nonionic, and Amphoteric Surfactants
- Nutrient Input Through Occult and Wet Deposition into a Subtropical Montane Cloud Forest
- Is Nuclear Energy the Solution?
- Monitoring of Atmospheric Mercury at a Global Atmospheric Watch (GAW) Site on An-Myun Island, Korea
- Seasonal Variations of Ten Metals in Highway Runoff and their Partition between Dissolved and Particulate Matter
- The Big Biosphere Party
- The Effect of Moderate Salinity on Nitrate Leaching from Bermudagrass Turf: A Lysimeter Study
- Effects of Soil Property and Soil Amendment on Weathering of Abraded Metallic Pb in Shooting Ranges
- Effects of Copper on the Sorption of Phthalate Esters to Yellow River Sediment
- Ecotoxicological Evaluation in an Effluent and Petrochemical Waste Disposal Area
- Use of Enrichment Factors for the Assessment of Heavy Metal Contamination in the Sediments of Koumoundourou Lake, Greece
- Chemical Oxygen Demand (COD) Reduction in Domestic Wastewater by Fly Ash and Brick Kiln Ash
- Accumulation and Distribution of Heavy Metals in Scirpus americanus and Typha latifolia from an Artificial Lagoon in San Luis Potosí, México
- Ammonia Emissions from Anaerobically-digested Slurry and Chemical Fertilizer Applied to Flooded Forage Rice
- Toxicity of Residual Chlorines from Hypochlorite-treated Seawater to Marine Amphipod Hyale barbicornis and Estuarine Fish Oryzias javanicus
- Vertical Distribution of Nonylphenol Ethoxylates and Their Derivatives in Sediments of a Freshwater Reservoir
- Simultaneous Use of Trace Metals, 210 Pb and 137 Cs in Floodplain Sediments of a Lowland River as Indicators of Anthropogenic Impacts
- Water Pollution Simulation and Health Risk Assessment Through a Refined Contaminant Transport Model
- The Democracy Defect and Our Polluted, Overpopulated Biosphere
- Use of Moringa oleifera Seed as a Natural Adsorbent for Wastewater Treatment
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