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Standard Practice for Tissue Cryosection Analysis with SIMS
Automaticky preložený názov:
Štandardné praktiky pre tkanivové cryosection analýzu s SIMS
NORMA vydaná dňa 1.11.2012
Označenie normy: ASTM E1880-12
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.11.2012
Kód tovaru: NS-43430
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
SIMS, ICS Number Code 17.180.01 (Optics and optical measurement in general)
Significance and Use | ||
5.1 Pressing cryosections flat onto a conducting substrate has been one of the most challenging problems in SIMS analysis of cryogenically prepared tissue specimens. Frozen cryosections often curl or peel off, or both, from the substrate during freeze-drying. The curling of cryosections results in an uneven sample surface for SIMS analysis. Furthermore, if freeze-dried cryosections are not attached tightly to the substrate, the impact of the primary ion beam may result in further curling and even dislodging of the cryosection from the substrate. These problems render SIMS analysis difficult, frustrating and time consuming. The use of indium as a substrate for pressing cryosections flat has provided a practical approach for analyzing cryogenically prepared tissue specimens (1).4 5.2 The procedure described herein has been successfully used for SIMS imaging of calcium and magnesium transport and localization of anticancer drugs in animal models 5.3 The procedure described here is amenable to soft tissues of both animal and plant origin. |
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1. Scope | ||
1.1 This practice provides the Secondary Ion Mass Spectrometry (SIMS) analyst with a method for analyzing tissue cryosections in the imaging mode of the instrument. This practice is suitable for frozen-freeze-dried and frozen-hydrated cryosection analysis. 1.2 This practice does not describe methods for optimal freezing of the specimen for immobilizing diffusible chemical species in their native intracellular sites. 1.3 This practice does not describe methods for obtaining cryosections from a frozen specimen. 1.4 This practice is not suitable for any plastic embedded tissues. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||
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