Soil quality. Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials. Part 4: Extraction of humic substances from solid samples (ISO 12782-4:2012)
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ISO 12782-4:2012 specifies a procedure to determine the concentration of humic substances in soil or other materials. Other materials also include waste. The content of humic substances can be used as input in geochemical models.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Sample pretreatment
7.1 Sample size
7.2 Particle size reduction
7.3 Determination of dry residue
7.4 Test portion
8 Procedure
8.1 Preparation of DAX-8 resin
8.2 Determination of total humic acid (HA), fulvic acid (FA) and hydrophilic organic carbon (Hy) content in solid source materials
9 Eluate treatment and storage
10 Analytical determination
11 Blank test
12 Calculation
12.1 General correction factors for the calculation of humic acid (HA), fulvic acid (FA), hydrophilic organic carbon (Hy) and hydrophobic neutral organic carbon (HON) in liquid and solid samples
12.2 Concentration of total humic acid (HA), fulvic acid (FA), hydrophilic organic carbon (Hy) and hydrophobic neutral organic carbon (HON) concentrations in solid samples
13 Expression of results
14 Test report
15 Performance characteristics
Annex A Schematic representation of the fractionation procedure (informative)
Annex B Validation of procedure (informative)
Annex C Conditions regarding centrifugation (informative)
8.2 Determination of total humic acid (HA), fulvic acid (FA) and hydrophilic organic carbon (Hy) content in solid source materials
9 Eluate treatment and storage
10 Analytical determination
11 Blank test
12 Calculation
12.1 General correction factors for the calculation of humic acid (HA), fulvic acid (FA), hydrophilic organic carbon (Hy) and hydrophobic neutral organic carbon (HON) in liquid and solid samples
12.2 Concentration of total humic acid (HA), fulvic acid (FA), hydrophilic organic carbon (Hy) and hydrophobic neutral organic carbon (HON) concentrations in solid samples
13 Expression of results
14 Test report
15 Performance characteristics
Annex A Schematic representation of the fractionation procedure (informative)
Annex B Validation of procedure (informative)
Annex C Conditions regarding centrifugation (informative)
CEN/TR 15310-3:2006 Characterization of waste - Sampling of waste materials - Part 3: Guidance on procedures for sub-sampling in the field
EN 14899:2005 Characterization of waste - Sampling of waste materials - Framework for the preparation and application of a Sampling Plan
EN 15002:2015 Characterization of waste - Preparation of test portions from the laboratory sample
CEN/TR 15310-3:2006 Characterization of waste - Sampling of waste materials - Part 3: Guidance on procedures for sub-sampling in the field
EN 14899:2005 Characterization of waste - Sampling of waste materials - Framework for the preparation and application of a Sampling Plan
EN 15002:2015 Characterization of waste - Preparation of test portions from the laboratory sample
ISO 10381-1:2002 Soil quality -- Sampling -- Part 1: Guidance on the design of sampling programmes
ISO 10381-2:2002 Soil quality -- Sampling -- Part 2: Guidance on sampling techniques
ISO 10381-3:2001 Soil quality -- Sampling -- Part 3: Guidance on safety
ISO 10381-4:2003 Soil quality -- Sampling -- Part 4: Guidance on the procedure for investigation of natural, near-natural and cultivated sites
ISO 10381-5:2005 Soil quality -- Sampling -- Part 5: Guidance on the procedure for the investigation of urban and industrial sites with regard to soil contamination
ISO 10381-6:2009 Soil quality -- Sampling -- Part 6: Guidance on the collection, handling and storage of soil under aerobic conditions for the assessment of microbiological processes, biomass and diversity in the laboratory
ISO 11464:2006 Soil quality -- Pretreatment of samples for physico-chemical analysis
ISO 11465:1993 Soil quality -- Determination of dry matter and water content on a mass basis -- Gravimetric method
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 5667-3:2003 Water quality -- Sampling -- Part 3: Guidance on the preservation and handling of water samples
ISO 8245:1999 Water quality -- Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)