European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

Distribution and chemical speciation of trace metals in the North Atlantic (1991)

Data holding centreUniversity of Liverpool, Oceanographic Laboratories, Department of Earth Sciences
CountryUnited Kingdom  United Kingdom
Time periodFrom 06 March to 02 April 1991
OngoingNo
Geographical area

North East Atlantic (along 20° W, between 30° N and 53° N)

Observations 
Parameters

Ammonium and ammonia concentration parameters in water bodies; Transmittance and attenuance of the water column; Variable fluorescence parameters; Electrical conductivity of the water column; Dissolved oxygen parameters in the water column; Raw fluorometer output; Dissolved trace metalloid concentrations in the water column; Particulate trace metalloid concentrations in the water column; Nitrite concentration parameters in the water column; Salinity of the water column; Silicate concentration parameters in the water column; Temperature of the water column

Instruments

Fluorometers; transmissometers; CTD; nutrient analysers; discrete water samplers; continuous water samplers; elemental analysers; spectrophotometers

Description 
Summary

This data set was collected on RRS Challenger cruise 76/90 and comprises an investigation into the distribution and chemical speciation of trace metals in the North Atlantic, supported by NERC research grants. Continuous measurements were collected of fluorescence and transmittance from the ship's non-toxic supply along the entire cruise track. Nineteen CTD casts were taken at 13 stations, mostly taking measurements through the entire water column. A Rosette sampler with Go-Flo bottles was used, in addition to the CTD, and samples of the water column were collected at each of the 13 stations. These were filtered and analyzed in the laboratory. Trace metals analyzed for were CU, Ni, Cr, Pt, Ti, Al, Fe and V. Organic complexion of Cu and Ni were determined and speciation of Cr, Al and Ti measured. Nutrients (nitrite, silicate and ammonia) were measured spectrophotometrically.

OriginatorsUniversity of Liverpool, Oceanographic Laboratories, Department of Earth Sciences
Availability 
OrganisationUniversity of Liverpool, Oceanographic Laboratories, Department of Earth Sciences
AvailabilityBy negotiation
ContactHead of Department
Address

University of Liverpool, Oceanographic Laboratories, Department of Earth Sciences
PO Box 147
Liverpool
Merseyside
L69 3BX
United Kingdom

Telephone+44 151 794 4090
Administration 
Collating centreBritish Oceanographic Data Centre
Local identifier1010001
Global identifier252
Last revised2009-11-30