Next Article in Journal
Identification and Selection of Alternative Scenarios in LCA Studies of Integrated Waste Management Systems: A Review of Main Issues and Perspectives
Previous Article in Journal
Recent Research of Thorium Molten-Salt Reactor from a Sustainability Viewpoint
Article Menu

Export Article

Open AccessArticle
Sustainability 2012, 4(10), 2419-2429; doi:10.3390/su4102419

Sedimentation Rate and 210Pb Sediment Dating at Apipucos Reservoir, Recife, Brazil

Centro Regional de Ciências Nucleares (CRCN/CNEN-PE), Av. Professor Luiz Freire 200, 50740-540 Recife, PE, Brazil
*
Author to whom correspondence should be addressed.
Received: 20 August 2012 / Revised: 10 September 2012 / Accepted: 11 September 2012 / Published: 27 September 2012
View Full-Text   |   Download PDF [839 KB, uploaded 24 February 2015]   |  

Abstract

The Apipucos Reservoir is located in Pernambuco-Brazil. Several districts of the metropolitan area use this reservoir to dispose of rubbish, waste and sewage. Dating sediments uses the 210Pb from the atmosphere. 210Pb is a daughter of the 222Rn, which emanates from the soil but is different from that contained in the sediment, which is in balance with the 226Ra. The chosen model for dating sediments depends on certain conditions: in environments where the amount of sediment can vary, the Constant Rate of Supply (CRS) model is adopted. In environments where the sediments can be considered to be constant, a Constant Initial Concentration (CIC) model is applied. A 70 cm long and 5 cm internal-diameter wide core was used for sediment sampling. Samples were dried at 105 °C, and about 5 g dry material was dissolved with acids. The 210Pb and 226Ra content was determined by their radioactive descendants’ concentrations. For the second sampling point, both models could be used. The results showed an increase in sedimentation rate over the last 50–60 years. We could conclude that the top sediment interval had been there 30 years ago. We could decide that the CRS was the best applicable model. View Full-Text
Keywords: sedimentation rate; dating sediments with 210Pb; CRS and CIC models sedimentation rate; dating sediments with 210Pb; CRS and CIC models
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

de Souza, V.L.B.; Rodrigues, K.R.G.; Pedroza, E.H.; Melo, R.T.; Lima, V.L.; Hazin, C.A.; Almeida, M.G.O.; Nascimento, R.K. Sedimentation Rate and 210Pb Sediment Dating at Apipucos Reservoir, Recife, Brazil. Sustainability 2012, 4, 2419-2429.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top