Optimizing a standard preparation procedure for grain size analysis of marine sediments by laser diffraction (MS-PT4SD: Marine sediments-pretreatment for size distribution)

Roy Jaijel, Beverly N. Goodman Tchernov, Eli Biton, Yishai Weinstein, Timor Katz

Research output: Contribution to journalArticlepeer-review

Abstract

Grain size distributions are a key physical measurement in marine sediment studies. The introduction of laser diffraction spectrometry analyzers a few decades ago, allowed the differentiating of grain size in higher resolution than before, and led to increased volumes of samples analyzed overall. However, pretreatment of the sediment samples is required for obtaining high quality results by this method. Currently there are different pretreatment methods for different sediments, but no inclusive, standard method that is applicable across many types. Moreover, often the particulars of the methods are not fully described in the literature. A standard simple and effective pretreatment method which is applicable for a large variety of marine sediments is required as it can allow for intra and inter study comparisons. This study systematically tested and compared commonly applied digestion and dispersion pretreatment techniques for particle size analysis by laser diffraction spectrometry. The pretreatments were applied on a wide spectrum of marine sediments to distill a single protocol that produces precise, reliable, and consistent results across all samples. The recommended marine sediment pretreatment protocol (‘PT4SD’) reduces the needed amount of sediment for analysis, reduces handler bias and overall digestion time. We propose that using ‘PT4SD’ as a standard pretreatment protocol will greatly benefit sedimentological laboratories individually, as well as encourage and improve the depth of cross-study comparability, thereby improving the collective field of marine sedimentology and related research as a whole.

Original languageEnglish
Article number103429
JournalDeep-Sea Research Part I: Oceanographic Research Papers
Volume167
DOIs
StatePublished - Jan 2021

Bibliographical note

Funding Information:
Funding for the study was provided by the Israel Ministry of Science and Technology , grant number 3–15503 . The authors highly appreciate the assistance provided by Mor Kanari, Nimer Taha, and Adellina Anne Cini. We also thank IOLR scientists and ship crew members, which collected and shared their sediment samples with us. The “Proyecto Costa Escondida” team is thanked for the Yucatan Peninsula sample collection. We are very grateful to Verena Tunnicliffe from Victoria University, BC, Canada for providing us with sediment from Saanich Inlet. The authors would like to thank the anonymous reviewers for their thoughtful comments.

Funding Information:
Funding for the study was provided by the Israel Ministry of Science and Technology, grant number 3?15503. The authors highly appreciate the assistance provided by Mor Kanari, Nimer Taha, and Adellina Anne Cini. We also thank IOLR scientists and ship crew members, which collected and shared their sediment samples with us. The ?Proyecto Costa Escondida? team is thanked for the Yucatan Peninsula sample collection. We are very grateful to Verena Tunnicliffe from Victoria University, BC, Canada for providing us with sediment from Saanich Inlet. The authors would like to thank the anonymous reviewers for their thoughtful comments.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

  • Grain size
  • Granulometry
  • Laser diffraction spectrometry (LDS)
  • Marine sediment
  • Sediment pretreatment
  • Sedimentology

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

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