Soil quality. Risk-based petroleum hydrocarbons. Part 1: Determination of aliphatic and aromatic fractions of volatile petroleum hydrocarbons using gas chromatography (static headspace method) (ISO 16558-1:2015)
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ISO 16558-1:2015 specifies a method for the quantitative determination of the total extractable volatile, the volatile aliphatic, and aromatic fractions of petroleum hydrocarbon content in field moist soil samples by gas chromatography with mass spectrometric detection. The aromatic fractions are determined by the sum of individual aromatic compounds. The sum of the volatile aliphatic (C5 to C10) and aromatic (C6 to C10) fractions can be referred to as "volatile oil". The results of the test carried out can be used for risk assessment studies related to contaminations with petroleum hydrocarbons. ISO 16558-1:2015 provides a method applicable to petroleum hydrocarbon contents from about 5 mg/kg soil expressed as dry matter for the whole aliphatic fraction C5 to C10 and about 5 mg/kg soil expressed as dry matter for the aromatic fraction in the boiling range of C6 to C10. With this method, all hydrocarbons with a boiling range of 36 °C to 184 °C, n-alkanes between C5H12 to C10H22, isoalkanes, cycloalkanes, BTEX, and di- and tri-alkyl benzenes compounds are determined as total volatile petroleum hydrocarbons C5 to C10. In addition, volatile aliphatic and aromatic fractions are specified. For the determination of semi-volatile aliphatic and aromatic fractions of petroleum hydrocarbons in soil samples, see ISO/TS 16558-2. NOTE The sub-fractions proposed in this part of ISO 16558 have shown to be suitable for risk assessment studies. However, other sub-fractions between C5H12 to C10H22 can be determined in conformity with this part of ISO 16558. On the basis of the peak pattern of the gas chromatogram and of the boiling points of the individual n-alkanes listed in Annex A, the approximate boiling range of the mineral oil and some qualitative information on the composition of the contamination can be achieved.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Interferences
5 Principle
6 Reagents
7 Apparatus
8 Sampling, preservation, and sample pretreatment
8.1 General
8.2 Sampling using vials pre-filled with methanol
8.3 Sampling using coring tube method
9 Procedure
9.1 Blank determination
9.2 Extraction
9.3 Headspace-analysis
9.4 Gas chromatographic analysis
10 Calculation
10.1 Calculation of the concentration in the spiked water sample
10.2 Calculation of the concentration of a volatile compound or fraction in the soil sample
10.3 Calculation of the concentration of volatile oil in the soil sample
11 Expression of results
12 Precision
13 Test report
Annex A Examples of GC-MS chromatograms of fuels (informative)
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 11465:1993 Soil quality -- Determination of dry matter and water content on a mass basis -- Gravimetric method
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 11465:1993 Soil quality -- Determination of dry matter and water content on a mass basis -- Gravimetric method
ISO 18512:2007 Soil quality -- Guidance on long and short term storage of soil samples
ISO 22155:2011 Soil quality -- Gas chromatographic determination of volatile aromatic and halogenated hydrocarbons and selected ethers -- Static headspace method
ISO 22892:2006 Soil quality -- Guidelines for the identification of target compounds by gas chromatography and mass spectrometry
ISO 8466-1:1990 Water quality -- Calibration and evaluation of analytical methods and estimation of performance characteristics -- Part 1: Statistical evaluation of the linear calibration function