Date (Publication)

2015-03-04

Citation identifier

CEH:EIDC: / 1420712455477

Citation identifier

https://catalogue.ceh.ac.uk/id/ed90df1b-462c-46bb-afbd-59794fb03f6b

Citation identifier

doi: / 10.5285/ed90df1b-462c-46bb-afbd-59794fb03f6b

Other citation details

Barnett, C.L., Wells, C., Thacker, S., Guyatt, H.J., Fletcher, J.M., Lawlor, A.J., Winfield, I.J., Beresford, N.A. (2015). Elemental concentrations in fish from lakes in Northwest England. NERC Environmental Information Data Centre 10.5285/ed90df1b-462c-46bb-afbd-59794fb03f6b

Point of contact

Organisation name	Individual name	Electronic mail address	Role
UK Centre for Ecology & Hydrology	Barnett, C.	enquiries@ceh.ac.uk	Point of contact
Centre for Ecology & Hydrology	Barnett, C.L.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Wells, C.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Thacker, S.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Guyatt, H.J.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Fletcher, J.M.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Lawlor, A.J.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Winfield, I.J.	enquiries@ceh.ac.uk	Author
Centre for Ecology & Hydrology	Beresford, N.A.	enquiries@ceh.ac.uk	Author
NERC Environmental Information Data Centre		info@eidc.ac.uk	Publisher
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Custodian
UK Centre for Ecology & Hydrology		enquiries@ceh.ac.uk	Owner

Maintenance and update frequency

Not planned

GEMET - INSPIRE themes, version 1.0

• Environmental Monitoring Facilities

Access constraints

Other restrictions

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no limitations

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This resource is made available under the terms of the Open Government Licence

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© UK Centre for Ecology & Hydrology

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If you reuse this data, you should cite: Barnett, C.L., Wells, C., Thacker, S., Guyatt, H.J., Fletcher, J.M., Lawlor, A.J., Winfield, I.J., Beresford, N.A. (2015). Elemental concentrations in fish from lakes in Northwest England. NERC Environmental Information Data Centre https://doi.org/10.5285/ed90df1b-462c-46bb-afbd-59794fb03f6b

Spatial representation type

Text, table

Distance

100  urn:ogc:def:uom:EPSG::9001

Language

English

Character set

UTF8

Topic category

• Environment

Begin date

2012-01-02

Unique resource identifier

OSGB 1936 / British National Grid

Distribution format

Name	Version
Comma-separated values (CSV)

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://data-package.ceh.ac.uk/sd/ed90df1b-462c-46bb-afbd-59794fb03f6b.zip	Supporting information

OnLine resource

Protocol	Linkage	Name
	https://data-package.ceh.ac.uk/data/ed90df1b-462c-46bb-afbd-59794fb03f6b	Download the data

Hierarchy level

Dataset

Other

dataset

Statement

Fish were collected in 2012 and 2013 from Windermere, Bassenthwaite Lake and Derwent Water in the English Lake District. Species collected were: Roach (Rutilus rutilus), Perch (Perca fluviatilis), Ruffe (Gymnocephalus cernuus), Brown trout (Salmo trutta), Pike (Esox lucius) and Vendace (Coregonus albula). Samples were frozen to minus 20 degrees Centigrade as soon as possible after collection. Fish samples were thoroughly defrosted, weighed and gutted prior to the whole-fish being ashed at 500°C. The ash was then weighed. Ashed fish samples were digested using an aqua regia reagent (fresh 3:1 mixture of concentrated HNO3 and HCl aristar grade) at 175°C for 12 minutes using a microwave oven (CEM, MarsXpress). Analysis of the ashed fish digests was then conducted by ICPMS (Perkin Elmer, NeXION 300D) or ICPOES (Perkin Elmer, 7300 DV). ICPMS measurements were made using two types of instrument operation, either quantitative or semi-quantitative (using Perkin Elmer Total Quant software). The quantitative measurements were made using external calibration after spiking the digests with 10 microgram per litre Ga, In and Re as internal standards to compensate for instrumental drift and matrix effects. The semi-quantitative measurements were made using the ICPMS instrument operating in kinetic energy discrimination (KED) mode with the addition of helium gas. The semi-quantitative and quantitative modes differed as the former used an element concentration to intensity response curve to extrapolate concentrations over a wide mass range. ICPMS and ICPOES instrument limits of detection (LOD) were calculated using mean and standard deviation measurements for the digestion reagent blank (yb, plus sb where yb is blank concentration and sb is three standard deviations of the blank). Method LODs were then calculated taking into account the dilution arising from the digestion procedure. Note that for some elements determined using the semi-quantitative ICPMS method it was not possible to determine instrument LODs from the analysis of a digestion reagent blank and in these cases the instrument LODs were estimated from an assessment of instrument sensitivity and assigned a values of 0.001 microgram per litre (equivalent to a mean method LOD of 0.001 milligrams per kilogram). Results are reported as milligrams per kilogram fresh weight (converted from ash weight using fresh to ash weight ratio for each sample).

Metadata

File identifier

ed90df1b-462c-46bb-afbd-59794fb03f6b XML

Metadata language

English

Character set

8859 Part 1

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-03-21T13:34:25

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Point of contact