Technical Note: Comparison of storage strategies of sea surface microlayer samples

[摘要] The sea surface microlayer (SML) is an important biogeochemical system whosephysico-chemical analysis often necessitates some degree of sample storage.However, many SML components degrade with time so the development of optimalstorage protocols is paramount. We here briefly review some commonly usedtreatment and storage protocols. Using freshwater and saline SML samples froma river estuary, we investigated temporal changes in surfactant activity (SA)and the absorbance and fluorescence of chromophoric dissolved organic matter(CDOM) over four weeks, following selected sample treatment and storageprotocols. Some variability in the effectiveness of individual protocols mostlikely reflects sample provenance. None of the various protocols examinedperformed any better than dark storage at 4 °C withoutpre-treatment. We therefore recommend storing samples refrigerated in thedark.

[学科分类] 地球化学与岩石