ISO 16703-2004 PDF

Full title and description

ISO 16703:2004 — Soil quality — Determination of content of hydrocarbon in the range C10 to C40 by gas chromatography. Specifies a laboratory GC method for the quantitative determination of mineral oil / hydrocarbons (approx. boiling range 175 °C to 525 °C; n‑alkanes C10–C40 and related hydrocarbon classes) in field‑moist soil samples, reported as mass fraction on a dry‑matter basis.

Abstract

ISO 16703:2004 defines sample pretreatment, extraction, clean‑up and gas‑chromatographic analysis procedures to determine hydrocarbon (mineral oil) content in soils in the C10–C40 range. The method is applicable over a typical working range of about 100 mg/kg to 10 000 mg/kg (dry mass) and can be adapted to lower detection limits with appropriate validation. It is not intended for gasoline‑range hydrocarbons < C10.

General information

• Status: Published (International Standard; under periodic review; revision work in progress).
• Publication date: 10 November 2004 (Edition 1:2004).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.080.10 — Chemical characteristics of soils / soil quality.
• Edition / version: Edition 1 (2004).
• Number of pages: 18 pages.

Scope

Specifies a gas‑chromatographic procedure for the quantitative determination of mineral oil / hydrocarbons in the C10–C40 boiling range in field‑moist soil samples. The method covers n‑alkanes (C10–C40), isoalkanes, cycloalkanes, alkylbenzenes, alkylnaphthalenes and certain polycyclic aromatic compounds provided they are not retained by the prescribed clean‑up column; it excludes quantitative determination of gasoline‑range hydrocarbons below C10. Results are reported as mass fraction on a dry‑matter basis.

Key topics and requirements

• Target analyte range: hydrocarbons with approximate boiling points 175 °C–525 °C (n‑alkanes C10–C40 and related compounds).
• Sample condition: method applies to field‑moist soil; results reported on a dry‑matter basis (drying and moisture determination referenced).
• Extraction: solvent extraction (validated solvent system and extraction procedure required; common practices include mechanical shaking/sonication with suitable non‑polar solvents).
• Clean‑up: adsorption column clean‑up (e.g., Florisil or equivalent) to remove polar interferents prior to GC analysis.
• Analysis: gas chromatography with appropriate detector (FID or MS) and calibration using hydrocarbon standards; peak‑pattern interpretation to estimate boiling‑range and composition.
• Quantitation range and validation: typical working range ~100–10 000 mg/kg (dry mass); laboratories must validate detection limits, recoveries and precision for their matrix and method variants.
• Reporting and QA: report dry‑basis concentration, method details (extraction/clean‑up), calibration information, quality controls (blanks, spikes, recoveries) and any deviations from the standard procedure.

Typical use and users

Widely used by environmental testing laboratories, contaminated‑land consultants, remediation contractors, regulatory agencies, research institutions and oil industry analytical groups for site assessment, monitoring and remediation verification where mineral‑oil range contamination (C10–C40) is suspected.

Related standards

ISO 16703 is part of the ISO soil‑quality / environmental solid matrices family and is commonly used alongside sampling and sample‑prep standards (for example ISO 10381‑1 for sampling design), moisture/dry‑matter methods (ISO 11465), and pretreatment guidance (ISO 14507). It has also been adopted as EN ISO 16703 in the European system. A revised edition (ISO/DIS 16703) has been developed to update and broaden the scope to environmental solid matrices.

Keywords

ISO 16703, soil quality, mineral oil, hydrocarbons C10–C40, gas chromatography, GC‑FID, extraction, clean‑up, Florisil, dry‑matter basis, environmental analysis, contaminated land.

FAQ

Q: What is this standard?

A: ISO 16703:2004 is an ISO international standard that specifies a gas‑chromatographic laboratory method for determining hydrocarbon (mineral oil) content in soils in the C10–C40 range.

Q: What does it cover?

A: It covers sample pretreatment for field‑moist soils, solvent extraction, clean‑up (adsorption column), GC analysis and reporting conventions for hydrocarbons with boiling ranges roughly 175 °C–525 °C (n‑alkanes C10–C40 and related compounds). It is not intended for gasoline‑range hydrocarbons < C10.

Q: Who typically uses it?

A: Environmental testing laboratories, remediation and site‑assessment consultants, regulators, academic researchers and petroleum/oil industry analysts use this method for quantifying mineral‑oil‑range contamination in soils.

Q: Is it current or superseded?

A: ISO 16703:2004 remains a published International Standard (first edition, 2004) but has been scheduled for revision; a Draft International Standard (ISO/DIS 16703) has been developed to replace and update it. Users should check for the latest published revision before formal adoption.

Q: Is it part of a series?

A: Yes — it belongs to the suite of ISO soil quality / environmental solid matrices standards (ISO/TC 190) and is used in concert with related standards for sampling, moisture/dry‑matter determination and sample pretreatment.

Q: What are the key keywords?

A: Hydrocarbons C10–C40, mineral oil, soil quality, gas chromatography, extraction, Florisil clean‑up, dry‑matter basis, environmental analysis.