Identification of wood species by ion mobility spectrometry

Lawrence, A. H.; Barbour, R. James.; Sutcliffe, R.

doi:10.1021/ac00013a007

Cited by 27 publications

(9 citation statements)

References 30 publications

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“…For a start, food contact item regulatory bodies and researchers in Ghana can initiate biochemical research that uses molecular features including cellular wood anatomy to accurately identify all species in current use for food contact purposes [33,64-66]. This approach will eliminate much of the guess-work and subjectivity associated with species identification by direct visual inspection and will pave the way for the complete chemical and biological characterization of all indigenous species in current use for food contact purposes.…”

Section: Discussionmentioning

confidence: 99%

Assessment of local wood species used for the manufacture of cookware and the perception of chemical benefits and chemical hazards associated with their use in Kumasi, Ghana

Mensah

Adei

et al. 2012

J Ethnobiology Ethnomedicine

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BackgroundHistorical proven wood species have no reported adverse health effect associated with its past use. Different historical proven species have traditionally been used to manufacture different wooden food contact items. This study uses survey questionnaires to assess suppliers’, manufacturers’, retailers’ and consumers’ (end-users’) preferences for specific wood species, to examine the considerations that inform these preferences and to investigate the extent of awareness of the chemical benefits and chemical hazards associated with wooden food contact material use.MethodsThrough the combined use of a cross sectional approach and a case study design, 25 suppliers, 25 manufacturers, 25 retailers and 125 consumers (end-users) of wooden food contact materials in four suburbs in Kumasi Metropolitan Area (Anloga junction, Ahinsan Bus Stop, Ahwia-Pankrono and Race Course) and Ashanti Akyim Agogo in the Ashanti Akyim North District of the Ashanti Region were administered with closed ended questionnaires. The questionnaires were prepared in English, but local language, Twi, was used to translate and communicate the content of the questionnaire where necessary.ResultsSuppliers’, manufacturers’ and retailers’ preferences for specific wood species for most wooden cookware differed from that of consumers (end-users). But all respondent groups failed to indicate any awareness of chemical benefits or chemical hazards associated with either the choice of specific wood species for specific wooden cookware or with the general use of wooden food contact materials. The lack of appreciation of chemical benefits or hazards associated with active principles of wooden cookware led to heavy reliance of consumers (end-users) on the wood density, price, attractive grain pattern and colour or on the judgement of retailers in their choice of specific species for a wooden cookware.ConclusionThis study contributes some practical suggestions to guide national policy development on improvement in quality of available wooden food contact materials in Ghana.

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Section: Discussionmentioning

confidence: 99%

Assessment of local wood species used for the manufacture of cookware and the perception of chemical benefits and chemical hazards associated with their use in Kumasi, Ghana

Mensah

Adei

et al. 2012

J Ethnobiology Ethnomedicine

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“…The other signals are evoked from the wood matrix and might serve as a wood identification tool. 29 Compounds that have been detected by mobile IMS are displayed in Table 1. Table 1 displays the preservatives that have been analyzed with GC/MS, GC-ECD and IMS.…”

Section: Portable Imsmentioning

confidence: 99%

Fast detection of preservatives on waste wood with GC/MS, GC-ECD and ion mobility spectrometry

Schröder

Matz

Kbler³

1998

Field Analyt. Chem. Technol.

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“…It is unclear at present if any of these methods can be used for automatic roundwood species classification. Sawn wood species, on the other hand, have been classified by a number of methods, including FT-NIR spectroscopy (Brunner et al 1996), Raman spectroscopy (Lewis et al 1994), ion mobility spectrometry (Lawrence 1989) and ultrasonic signals (Jordan et al 1998). An automated method has also been proposed for detecting defects in sawn wood using image segmentation (Funck et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Pine and spruce roundwood species classification using multivariate image analysis on bark

Nilsson¹,

Edlund²

2005

Holzforschung

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Wood discs from 67 pine and 79 spruce logs were collected from a forest clearing. Three different 24-bit redgreen-blue (RGB) images were acquired from the radial surface of each disc. The first image contained bark, the second image was a mixture of bark and wood surface, and the third image consisted only of wood surface. The image texture was compressed into vectors of Fouriertransformed wavelet coefficients. These were assembled in matrices and analysed by principal component analysis (PCA) and partial least-squares projections to latent structures (PLS). Classification using Fourier-transformed wavelet scales showed that the wood species could be predicted with 90% accuracy. A thorough examination of this classification showed that the predicting power of these models was mostly due to wavelet scales that represented the mean value of each colour channel. The prediction accuracy that could be obtained from coefficients representing image texture was generally low. The use of grey-level co-occurrence matrices prior to the wavelet transformation showed, however, that it is possible to classify the wood species of pine and spruce with an accuracy approaching 100%.

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Identification of wood species by ion mobility spectrometry

Cited by 27 publications

References 30 publications

Assessment of local wood species used for the manufacture of cookware and the perception of chemical benefits and chemical hazards associated with their use in Kumasi, Ghana

Assessment of local wood species used for the manufacture of cookware and the perception of chemical benefits and chemical hazards associated with their use in Kumasi, Ghana

Fast detection of preservatives on waste wood with GC/MS, GC-ECD and ion mobility spectrometry

Pine and spruce roundwood species classification using multivariate image analysis on bark

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