Applicability of ion mobility spectrometry for detection of quarantine pests in wood

K. J. Ewing; J. Sanghera; S. W. Myers; A. M. Ervin; C. Carey; G. Gleason; L. Mosser; L. Levy; M. K. Hennessey; R. Bulluck

doi:10.1117/12.2223877

12 July 2016 Applicability of ion mobility spectrometry for detection of quarantine pests in wood

K. J. Ewing, J. Sanghera, S. W. Myers, A. M. Ervin, C. Carey, G. Gleason, L. Mosser, L. Levy, M. K. Hennessey, R. Bulluck

Author Affiliations +

Proceedings Volume 9864, Sensing for Agriculture and Food Quality and Safety VIII; 98640P (2016) https://doi.org/10.1117/12.2223877
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

Visual inspection is the most commonly used method for detecting quarantine pests in agricultural cargo items at ports. For example, solid wood packing material (SWPM) at ports may be a pathway for wood pests and is a frequent item of inspection at ports. The inspection process includes examination of the external surface of the item and often destructive sampling to detect internal pest targets. There are few tools available to inspectors to increase the efficiency of inspection and reduce the labor involved. Ion mobility spectrometry (IMS) has promise as an aid for inspection. Because pests emit volatile organic compounds (VOCs) such as hormone like substances, Ion Mobility Spectrometry (IMS) was investigated for possible utility for detecting pests during inspection. SWPM is a major pest pathway in trade, and fumigation of many kinds of wood, including SWPM, with methyl bromide (MeBr) following a published schedule¹ is regularly conducted for phytosanitary reasons prior to shipment to the United States. However, the question remains as to how long the methyl bromide remains in the wood samples after fumigation such that it could act as an interferent to the detection of pest related VOC emissions. This work investigates the capability of ion mobility spectrometry to detect the presence of residual methyl bromide in fumigated maple and poplar wood samples at different times post fumigation up to 118 days after fumigation. Data show that MeBr can be detected in the less dense poplar wood up to 118 days after fumigation while MeBr can be detected in the denser maple wood 55 days after fumigation.

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K. J. Ewing, J. Sanghera, S. W. Myers, A. M. Ervin, C. Carey, G. Gleason, L. Mosser, L. Levy, M. K. Hennessey, and R. Bulluck "Applicability of ion mobility spectrometry for detection of quarantine pests in wood", Proc. SPIE 9864, Sensing for Agriculture and Food Quality and Safety VIII, 98640P (12 July 2016); https://doi.org/10.1117/12.2223877

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KEYWORDS

Ions

Inspection

Bromine

Spectroscopy

Neodymium

Target detection

Agriculture

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