4482fa14-aee2-4c7f-9c62-a08dc9704051 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:14:51 UK GEMINI 2.3 OSGB 1936 / British National Grid Major ion and nutrient data from rivers [LOIS] 2013-07-01 publication 2000-01-01 creation 1373029845405 CEH:EIDC: https://catalogue.ceh.ac.uk/id/4482fa14-aee2-4c7f-9c62-a08dc9704051 10.5285/4482fa14-aee2-4c7f-9c62-a08dc9704051 doi: Leach, D., Neal, M., Bachiller-Jareno, N., Tindall, I., Moore, R. (2013). Major ion and nutrient data from rivers [LOIS]. NERC Environmental Information Data Centre 10.5285/4482fa14-aee2-4c7f-9c62-a08dc9704051 Discrete data for major ions and nutrients in river water for 13 sites in the Humber catchment over the periods 1993 to 1997 and 1996 to 1997 and for 3 sites from the Tweed catchment over the period 1994 to 1997. Ions and nutrients measured were: Ammonia, Calcium (dissolved), Magnesium (dissolved), Potassium (dissolved), Sodium (dissolved), Bromide-ion, Carbon (organic dissolved), Chloride-ion, Nitrate, Nitrite, Phosphorus (soluble reactive), Phosphorus (total dissolved), Silicate (reactive dissolved), Sulphate, Carbon (organic particulate), Nitrogen (particulate), Phosphorus (total). Sites were sampled at regular weekly intervals and more intermittently during high flows (on average an extra sampling once a month per site). Samples were obtained using a wide neck PTFE bottle in a plastic covered bottle carrier (lowered from bridges where possible otherwise collected by immersing sample bottle by hand in the water as near the main flow as possible). Samples were filtered through Whatman 0.45um sterile membrane filters immediately on return to laboratory. Samples stored in sterilin tubes in the dark at 40C and analysed by Dionex DX100 ion chromatography system. Silicate reactive dissolved and Chloride-ion concentrations were determined by automated colourimetry and dissolved organic carbon concentrations were determined using a TOCsin II aqueous carbon analyser. Some samples on the River Aire were collected using EPIC automatic samplers. The analysis was carried out by members of the analytical chemistry section at York University (from April 1994 until November 1996) and at Wallingford Institute of Hydrology (September 1993 to April 1994 and December 1996 to April 1997), as part of the Land Ocean Interaction Study (LOIS). Full details about this dataset can be found at https://doi.org/10.5285/4482fa14-aee2-4c7f-9c62-a08dc9704051 Fry, M. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk pointOfContact Leach, D. University of York enquiries@ceh.ac.uk author Neal, M. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Bachiller-Jareno, N. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Tindall, I. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Moore, R. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC Environmental Information Data Centre info@eidc.ac.uk publisher UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk owner notPlanned Programme is finished Environmental Monitoring Facilities theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication nitrogen sulphate phosphorus nitrite nitrate carbon chloride ammonia water quality GEMET - Concepts, version 4.1.3 2019-01-28 creation England GeoNames 2006-01-01 creation Water quality Humber Swale Derwent Aire Calder Trent Ouse Nidd Calcium Magnesium Potassium Sodium Bromide Silicate Land Ocean Interaction Study LOIS otherRestrictions no limitations otherRestrictions This resource is made available under the terms of the Open Government Licence otherRestrictions © UK Centre for Ecology & Hydrology otherRestrictions If you reuse this data, you should cite: Leach, D., Neal, M., Bachiller-Jareno, N., Tindall, I., Moore, R. (2013). Major ion and nutrient data from rivers [LOIS]. NERC Environmental Information Data Centre https://doi.org/10.5285/4482fa14-aee2-4c7f-9c62-a08dc9704051 textTable English utf8 environment 1993-09-07 1997-10-29 -2.75 -0.72 53.1 55.8 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/sd/4482fa14-aee2-4c7f-9c62-a08dc9704051.zip Supporting information Supporting information available to assist in re-use of this dataset. information https://data-package.ceh.ac.uk/data/4482fa14-aee2-4c7f-9c62-a08dc9704051 Download the data Get a copy of this data download dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 For the major ion determinations, quality control standards were included with the samples during analysis. Standards were periodically sent to the analytical chemistry at the Institute of Hydrology (Wallingford) for comparison. Spiked samples prepared by the Institute of Freshwater Ecology (East Stoke) were also analysed occasionally as part of inter-laboratory comparison studies. The lowest quotable values were taken as five times the detection level and variables were rounded to the nearest 0.05 mg/l for Bromide, 0.1 mg/l for Nitrite, 0.2 mg/l for Phosphate, Sodium, Ammonium, Potassium, Magnesium. 0.5 mg/l for Nitrate and Calcium, and 1 mg/l for Chloride and Sulphate. For Carbon organic dissolved, Chloride-ion and Silicate reactive dissolved, the lowest quotable values were taken as 2% of the highest calibration standard and both variables were rounded to 1% of the highest calibration standard. A zip file containing box-and-whisker plots for each determinand, showing the range of values (median, inter-quartile range, 1.5 * inter-quartile range, outliers) recorded at each site is available to enable prospective users to understand data quality.