Micro-organic herbicides data from rivers [LOIS]
Default
Identification info
- Metadata Language
- English (en)
- Character set
- utf8
- Dataset Reference Date ()
- 2013-07-01
- Dataset Reference Date ()
- 2000-01-01
- Identifier
- CEH:EIDC: / 1373029956118
- Identifier
- doi: / 10.5285/e28ffc01-880d-423f-acb6-879b9fd4603a
- Other citation details
- Bhardwaj, C.L., Dodd, J.C., Bachiller-Jareno, N., Tindall, I., Moore, R. (2013). Micro-organic herbicides data from rivers [LOIS]. NERC Environmental Information Data Centre 10.5285/e28ffc01-880d-423f-acb6-879b9fd4603a
- Maintenance and update frequency
- notPlanned
- Maintenance note
- Programme is finished
- GEMET - INSPIRE themes, version 1.0 ()
-
- Environmental Monitoring Facilities
- GeoNames
- Keywords
-
- Water quality
- water quality
- Phenyl urea
- Phenoxy acid
- herbicide
- 2-4-Dichlorophenoxyacetic acid
- 4-(4-Chloro-O-tolyloxy) butyric acid
- 4-Chloro-O-tolyloxyacetic acid
- Chlorotoluron
- Diuron
- Isoproturon
- Linuron
- Mecoprop
- Land Ocean Interaction Study
- LOIS
- Humber
- Swale
- Derwent
- Aire
- Calder
- Trent
- Ouse
- Nidd
- Limitations on Public Access
- otherRestrictions
- Other constraints
- no limitations
- Use constraints
- otherRestrictions
- Use constraints
- otherRestrictions
- Other constraints
- © UK Centre for Ecology & Hydrology
- Use constraints
- otherRestrictions
- Other constraints
- If you reuse this data, you should cite: Bhardwaj, C.L., Dodd, J.C., Bachiller-Jareno, N., Tindall, I., Moore, R. (2013). Micro-organic herbicides data from rivers [LOIS]. NERC Environmental Information Data Centre https://doi.org/10.5285/e28ffc01-880d-423f-acb6-879b9fd4603a
- Spatial representation type
- textTable
- Topic category
-
- Environment
))
- Begin date
- 1993-09-07
- End date
- 1997-10-29
Distribution Information
- Data format
-
-
Comma-separated values (CSV)
()
-
Comma-separated values (CSV)
()
- Resource Locator
-
Download the data
Get a copy of this data
- Resource Locator
-
Supporting information
Supporting information available to assist in re-use of this dataset.
- Resource Locator
-
Download the data
Get a copy of this data
- Resource Locator
-
Supporting information
Supporting information available to assist in re-use of this dataset.
- Quality Scope
- dataset
- Other
- dataset
Report
- Dataset Reference Date ()
- 2010-12-08
- Statement
- Phenyl urea herbicides were concentrated by using one of the following methods: solid phase extraction (SPE) using C18 (1gm, 6ml) (EC) (ISOLUTE) cartridges and eluting with ethyl acetate; as previous method except that the dried cartridge after loading was washed with 6ml of methanol: water:: 1:1 (to remove the impurities) before eluting the herbicides with methanol; liquid-liquid extraction with dichloromethane. Phenoxy acid herbicides were concentrated using liquid-liquid extraction with dichloromethane. Phenyl urea herbicides were measured by High Performance Liquid Chromatography (HPLC) with detection by a UV/VIS detector and phenoxy acid herbicides by Gas Chromatography (GC) with detection by a mass selective detector (GS-MS). One sample from each batch was randomly spiked with a mixed standard of urea and acid herbicides for comparison purposes. For all determinands certified grade standards of purity >99% were used. The laboratory at Wallingford takes part in WRC's AQUACHECK inter-laboratory harmonisation exercise for urea and acid herbicides. Data quality for both groups of herbicides is variable because of the nature of samples (Aire, Calder, Don and Trent were found to be highly polluted resulting in complex chromatograms), the level of herbicides present (mostly they are close to the detection limit) and difficulties in extraction especially in liquid-liquid extraction where they formed emulsions. A zip file of box-and-whisker plots are available for each determinand, showing the range of values (median, inter-quartile range, 1.5 * inter-quartile range, outliers) recorded at each site to enable prospective users to understand data quality.
Metadata
- File identifier
- e28ffc01-880d-423f-acb6-879b9fd4603a XML
- Metadata Language
- English (en)
- Character set
- ISO/IEC 8859-1 (also known as Latin 1)
- Resource type
- dataset
- Hierarchy level name
- dataset
- Metadata Date
- 2022-05-20T10:40:52
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3