Determination of Chlorpropham (CIPC) residues, in the concrete flooring of potato stores, using quantitative (HPLC UV/VIS) and qualitative (GCMS) methods

Douglas, L. , MacKinnon, G. , Cook, G. , Duncan, H., Briddon, A. and Seamark, S. (2018) Determination of Chlorpropham (CIPC) residues, in the concrete flooring of potato stores, using quantitative (HPLC UV/VIS) and qualitative (GCMS) methods. Chemosphere, 195, pp. 119-124. (doi:10.1016/j.chemosphere.2017.12.010)

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Abstract

Isopropyl-N-(3-chlorophenyl) carbamate (CIPC, common name Chlorpropham) is commonly used for post-harvest sprout inhibition in stored potatoes. It is applied as a thermal fog which results in loss to the fabric of the store and the atmosphere. Recently, there have been concerns in the United Kingdom because of cross contamination of other crop commodities that were stored in buildings with a history of CIPC usage. This cross contamination may have occurred because of retained residues in the fabric of the stores. The retention of CIPC in concrete is poorly understood; therefore the requirement for a robust analytical method for the detection and quantification of CIPC in concrete is a critical first step in tackling this problem. A method using High-Performance Liquid Chromatography with ultraviolet detection (HPLC UV/VIS) was validated. CIPC recoveries at three concentration levels (0.4, 4.0 and 40.0 µg g-1) were in the range of 90.7-97.0 % with relative standard deviations between 2.14-3.01 %. The limits of detection and quantification were 0.03 and 0.1 µg g-1 , respectively. This study confirmed that CIPC was persistent in concrete to a depth of 4 cm, with > 90 % within the top 1 cm of the flooring.

Item Type:Articles
Additional Information:This work was supported by the Agriculture and Horticulture Development Board (grant number 115R485).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cook, Professor Gordon and Douglas, Leisa Antoinette and MacKinnon, Dr Gillian
Authors: Douglas, L., MacKinnon, G., Cook, G., Duncan, H., Briddon, A., and Seamark, S.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Chemosphere
Publisher:Elsevier
ISSN:0045-6535
ISSN (Online):1879-1298
Published Online:05 December 2017
Copyright Holders:Copyright © 2017 Elsevier Ltd.
First Published:First published in Chemosphere 195:119-124
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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