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Mar Pollut Bull. 2015 Jun 15;95(1):40-6. doi: 10.1016/j.marpolbul.2015.04.044. Epub 2015 Apr 30.

Using a forensic science approach to minimize environmental contamination and to identify microfibres in marine sediments.

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Department of Life Sciences, Natural History Museum, London SW7 5BD, UK. Electronic address:
Department of Forensic and Crime Science, Staffordshire University, Stoke-On-Trent ST4 2DF, UK.
Department of Life Sciences, Natural History Museum, London SW7 5BD, UK.
School of Marine Science and Engineering, Plymouth University, Plymouth, Devon PL4 8AA, UK.
School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK.


There is growing evidence of extensive pollution of the environment by microplastic, with microfibres representing a large proportion of the microplastics seen in marine sediments. Since microfibres are ubiquitous in the environment, present in the laboratory air and water, evaluating microplastic pollution is difficult. Incidental contamination is highly likely unless strict control measures are employed. Here we describe methods developed to minimize the amount of incidental post-sampling contamination when quantifying marine microfibre pollution. We show that our protocol, adapted from the field of forensic fibre examination, reduces fibre abundance by 90% and enables the quick screening of fibre populations. These methods therefore allow an accurate estimate of microplastics polluting marine sediments. In a case study from a series of samples collected on a research vessel, we use these methods to highlight the prevalence of microfibres as marine microplastics.


Deep-sea; Microfibre; Microplastic; Pollution; Sediment

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