Applications of liquid-phase microextraction in the sample preparation of environmental solid samples.

Molecules · 2014 · PMC6271381 · PMID 24858267

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a positive trendno p-value reported

However, there seems to be a positive trend towards introducing LPME techniques in the environmental analysis of solid samples, judging from the number of papers in the last decade.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.