Environmental scanning electron microscopy of marine aggregates

被引：0

作者：

Lavoie, D.M. ^{[1
]}

Little, B.J. ^{[1
]}

Ray, R.I. ^{[1
]}

Bennett, R.H. ^{[1
]}

Lambert, M.W. ^{[1
]}

Asper, V. ^{[1
]}

Baerwald, R.J. ^{[1
]}

机构：

[1] Naval Research Laboratory, Stennis Space Center, MS 39529, United States

来源：

Journal of Microscopy | 1995年 / 178卷 / 02期

关键词：

Aggregates - Driers (materials) - Electrons - Energy dispersive spectroscopy - Hydration - Minerals;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Marine aggregates were examined for the first time in the hydrated state using an environmental scanning electron microscope (ESEM). Sample preparation consisted of fixation followed by rinsing with distilled water to remove excess salts and fixative. Aggregates were continuously observed at resolutions comparable to conventional scanning electron microscopy through stages of hydration, from completely immersed to desiccated. Because no metallic coating is required, energy-dispersive X-ray spectroscopy (EDXS) can be used to analyse rapidly constituent elements occurring at low concentrations with no spectral interference. Subtle differences in mineral particles were seen in both EDXS spectra and in direct observation of relative hydration, reflecting apparent differences in mineralogy. ESEM enabled examination of effects of desiccation and rehydration on individual particles composed primarily of hydrated polymer and eliminated dehydration artefacts in delicate organisms.

引用

页码：101 / 106