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</script>Additional file 1. Details of the chemical standards used for the analysis; MS acquisition parameters for all three GC/MS systems, PAH levels in blank samples together with their respective Limits of Detection (LODs) and Limits of Quantification (LOQs) as well as repeatability and accuracy of fortified Quality Control (QC) samples.
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
