Výsledky vyhledávání - "E. G. Cotterill"

Adsorption and degradation of chlorsulfuron and metsulfuron-methyl in soils from different depths

Autor: Sarah J. Welch, Allan Walker, E. G. Cotterill

Publikováno v: Weed Research. 29:281-287

Summary Adsorption and degradation rates of chlorsulfuron and metsulfuron-methyl were measured in soil taken from depths of 0–20, 20–40 and 40–60 cm at eight sites. Adsorption of both herbicides was negatively correlated with soil pH, and posit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8974a9543fd05c7384c7b99b21083940
https://doi.org/10.1111/j.1365-3180.1989.tb00913.x

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Determination of 3,6-dichloropicolinic acid residues in soil by gas chromatography of the 1-butyl ester

Autor: E. G. Cotterill

Publikováno v: Bulletin of environmental contamination and toxicology. 19(4)

Although this method gives similar limits of detection and recoveries to that of Pik and Hodgson, the reduced background and introduction of the less volatile ester gives it some advantage especially for soils with high organic matter content with th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efb1b0aae97261aaf8a9f0cf69503cd6
https://pubmed.ncbi.nlm.nih.gov/656649

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HPLC Of Pesticide Residues in Environmental Samples

Autor: E. G. Cotterill, T. H. Byast

Publikováno v: Liquid Chromatography in Environmental Analysis ISBN: 9781461297789

Although liquid chromatography has been in use for many years, recent advances in technology have led to a rapid expansion in its application in analytical chemistry (1). Improvements in solvent delivery systems, packing materials, and the availabili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db6ae11770e193b95a216ae1f58ec71c
https://doi.org/10.1007/978-1-4612-5306-8_3

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Extraction of picloram residues from a sandy loam soil

Autor: C. E. McKone, E. G. Cotterill

Publikováno v: Bulletin of environmental contamination and toxicology. 11(3)

The efficiency of extraction of low levels of picloram from field treated soil using aqueous systems is dependent on the pH during extraction. Data from laboratory experiments and residue analyses on soil from a field experiment have been used to dem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d7af97d201bdd7b39565cddad5fc0ef
https://pubmed.ncbi.nlm.nih.gov/4433803

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Enhanced degradation in soil of tri-allate and other carbamate pesticides following application of tri-allate

Autor: E. G. Cotterill, P. G. Owen

Summary Tri-allate degraded faster in soil from a site (T1) that had received 1·7 kg ha−1 of tri-allate annually for 23 years than in soil from an adjacent site (TO) that had received no pesticide application. Soil from the untreated site, which h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f2b8085359dbb4da6b7528ff1e0da23
https://doi.org/10.1111/j.1365-3180.1989.tb00842.x

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Determination of acid and hydroxybenzonitrile herbicide residues in soil by gas-liquid chromatography after ion-pair alkylation

Autor: E. G. Cotterill

Publikováno v: The Analyst. 107:76

The herbicides are extracted from soil with saturated calcium hydroxide solution. After clean-up the residues are ethylated using iodoethane and tetrabutylammonium hydrogen sulphate as counter ion. Liquid-liquid partition and the use of a macroreticu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1169e1e3baba78492381275b925e7251
https://doi.org/10.1039/an9820700076

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