European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Isolation, fractionation and characterization of aquatic humic materials in Aveiro region, Portugal (1990 onwards)

Data holding centreUniversity of Aveiro, Department of Chemistry
CountryPortugal  Portugal
Time periodFrom May 1990 onwards
OngoingYes
Geographical area

Aveiro area (Portugal)

Observations 
Parameters

Carbon concentrations in sediment; Carbon concentrations in suspended particulate material; Particulate inorganic carbon concentrations in the water column; Colloidal organic carbon concentration in the water column; Particulate total and organic carbon concentrations in the water column; Dissolved organic carbon concentration in the water column; Nutrient concentrations in sediment pore waters; Nitrate concentration parameters in the water column; Nitrite concentration parameters in the water column; Dissolved organic carbon concentrations in sediment pore waters; Phosphate concentration parameters in the water column; Silicate concentration parameters in the water column; Concentration of organic matter in sediments; Total dissolved inorganic carbon (TCO2) concentration in the water column

Instruments

Nutrient analysers; dissolved gas sensors; autoanalysers; titrators

Description 
Summary

A methodology for isolation is proposed in order to obtain enough amounts of humic materials which will allow the carrying out of studies on the mechanisms of mutagenicity in water supplies, as well as studies on the complexation and transport of organic and inorganic compounds in natural waters. The main steps leading to the isolation of humics will be as follows: membrane filtration (0.45 micron), acidification of the filtered water, elution through a poly (methylmetaurylate) resin followed by another elution through a styrene divinylbenzene polymer resin, back elution of the observed material by an alkaline solution, reconcentration desalting, protenation and freeze-drying.

OriginatorsUniversity of Aveiro, Department of Chemistry
Availability 
OrganisationUniversity of Aveiro, Department of Chemistry
AvailabilityBy negotiation
ContactProf. Armando Duarte
Address

University of Aveiro, Department of Chemistry
Campus Universitário de Santiago
Aveiro
Aveiro
3810-193
Portugal

Telephone+351 234 370 360
Facsimile+351 234370084
Emailquimica@ua.pt
Administration 
Collating centreIHPT, Hydrographic Institute
Local identifier15035002
Global identifier2277
Last revised2009-10-29