ISO 16720:2005 PDF

Soil quality — Pretreatment of samples by freeze-drying for subsequent analysis

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Title (English):

ISO 16720:2005

Soil quality — Pretreatment of samples by freeze-drying for subsequent analysis

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 5
Publication date:: April 4, 2005
Edition:: ISO IS 16720 edition 1 version 1
ICS:: 13.080.20

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Description (English):

ISO 16720:2005 specifies a method for pretreatment of soil samples by freeze-drying for subsequent analysis. ISO 16720:2005 is applicable to soil samples for subsequent determination of elements or organic compounds recognized as non-volatile under freeze-drying conditions. Generally, ISO 16720:2005 can also be applied to samples from sludges and sediments. This method is also applicable as a first step for the determination of dry matter (or water) content, for instance in the case of samples with high water content.

Technical details

Technical committee: ISO/TC 190/SC 3 - Chemical and physical characterization
SKU: ISO 16720:2005

Abstract

Overview

ISO 16720:2005 is an international standard that specifies the pretreatment of soil samples by freeze-drying to prepare them for subsequent analytical testing. Developed by the International Organization for Standardization (ISO), this standard provides a reliable and efficient method to remove moisture from soils, sludges, and sediments while preserving non-volatile elements and organic compounds for accurate laboratory analysis.

This method is particularly designed for samples that contain high water content and is also applicable as a first step in determining dry matter or water content. Freeze-drying, also known as lyophilization, helps maintain sample integrity by sublimating water under controlled low temperature and vacuum conditions, preventing alteration of the compounds of interest.

Key Topics

Scope and Applicability The standard applies primarily to soil samples but can also be extended to sludges and sediments. It targets the preservation of elements and organic compounds that remain stable during freeze-drying.
Freeze-Drying Principle Freeze-drying involves:
- Pre-cooling samples below their eutectic point (usually

Related standards

Other ISO standards

Overview

Key Topics

Scope and Applicability The standard applies primarily to soil samples but can also be extended to sludges and sediments. It targets the preservation of elements and organic compounds that remain stable during freeze-drying.
Freeze-Drying Principle Freeze-drying involves:
- Pre-cooling samples below their eutectic point (usually

ISO 16720:2005 PDF

Technical details

Abstract

Overview

Key Topics

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