EN 12918:1999
(Main)Water quality - Determination of parathion, parathion-methyl and some other organophosphorus compounds in water by dichloromethane extraction and gas chromatographic analysis
Water quality - Determination of parathion, parathion-methyl and some other organophosphorus compounds in water by dichloromethane extraction and gas chromatographic analysis
This European Standard specifies the extraction processes and gas chromatographic (GC) methods for determining parathion, parathion-methyl and some other organophosphorus compounds in drinking waters, surface waters and waste waters. This standard may also be suitable for the determination of other organic compounds. The range is dependent on the compound and the source of water and is typically up to 1 ug/l with a reporting limit of 0,001 ug/l for drinking waters involving a 1 000 to 1 extraction ratio.
Wasserbeschaffenheit - Bestimmung von Parathion, Parathion-methyl und einigen anderen Organphosphor-Verbindungen in Wasser mittels Dichlormethan-Extraktion und gaschromatographischer Analyse
Diese Europäische Norm legt ein Verfahren zur Bestimmung von Parathion, Parthion-methyl und einigen anderen Organophosphoverbindungen in Trink-, Oberflächen- und Abwasser nach Extraktion und Gaschromatographie (GC) fest. Diese Norm kann auch zur Bestimmung anderer organischer Verbindungen geeignet sein. Der Anwendungsbereich hängt von der zu bestimmenden Substanz und der Herkunft des Wassers ab und beträgt üblicherweise bis zu 1 ug/l mit einer unteren Angabegrenze von 0,001 ug/l für Trinkwasser bei einem Extraktionsverhältnis von 1 000:1.
Qualité de l'eau - Dosage du parathion, méthyl-parathion et certains autres composés organophosphorés dans les eaux après extraction au dichlorométhane et analyse par chromatographie en phase gazeuse
La présente norme européenne prescrit une méthode par chromatographie en phase gazeuse permettant le dosage du parathion, méthyl-parathion et certains autres composés organophosphorés dans les eaux potables, les eaux de surface et les eaux résiduaires. La présente norme peut également convenir au dosage d'autres composés organiques. La gamme dépend du composé et de l'origine de l'eau, et s'élève généralement jusqu'à 1 ug/l, avec une limite de 0,01 ug/l dans le cas des eaux potables pour un rapport d'extraction de 1 000 pour 1.
Kakovost vode - Določevanje parationa, parationmetila in drugih organofosfornih spojin v vodi z ekstrakcijo z diklorometanom in metodo plinske kromatografije
General Information
- Status
- Published
- Publication Date
- 17-Aug-1999
- Technical Committee
- CEN/TC 230 - Water analysis
- Drafting Committee
- CEN/TC 230 - Water analysis
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 09-Feb-2022
- Completion Date
- 21-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
EN 12918:1999 - Overview
EN 12918:1999 (CEN) specifies validated analytical procedures for the determination of parathion, parathion‑methyl and selected other organophosphorus compounds in water. The method uses dichloromethane extraction of water samples followed by gas chromatographic (GC) analysis. It applies to drinking water, surface water and wastewater, and may be adapted for other organic contaminants depending on compound chemistry and matrix. Typical achievable concentrations are up to about 1 µg/L, with a reporting limit of 0.001 µg/L for drinking waters when using a 1000:1 extraction ratio.
Key Topics and Technical Requirements
- Scope and applicability: Methods tailored for organophosphorus pesticides in varied water matrices (drinking, surface, waste).
- Sample preparation: Liquid–liquid extraction using dichloromethane to isolate target compounds from aqueous samples.
- Analytical technique: Gas chromatography employed for separation and quantification of parathion, parathion‑methyl and other organophosphorus analytes.
- Performance characteristics: Typical working range up to ~1 µg/L; reporting limits down to 0.001 µg/L under defined extraction ratios.
- Quality assurance: Emphasis on calibration, method validation, recovery checks and control of matrix effects to ensure reliable GC results.
- Adaptability: Method may be suitable for additional organic compounds; sensitivity and applicability depend on analyte properties and water matrix.
Applications and Who Uses This Standard
- Environmental laboratories conducting pesticide monitoring in rivers, lakes and effluents.
- Drinking water testing facilities that require low reporting limits for public-health compliance.
- Regulatory agencies setting and enforcing pesticide concentration limits in water.
- Wastewater treatment operators monitoring removal efficiency of organophosphorus compounds.
- Public health and research institutions studying pesticide occurrence, transport and fate in aquatic systems.
Practical benefits include standardized sample extraction and GC workflows that support comparable, legally defensible results across laboratories and monitoring programs. The method’s documented detection limits and extraction-ratio guidance help laboratories design sampling and concentration steps to meet regulatory reporting needs.
Related Standards
- EN 12918:1999 is a CEN document; it has national adoptions (e.g., SIST EN 12918:2000).
- Users often consult other CEN/ISO methods for complementary pesticide and organic contaminant analyses and for broader physicochemical methods of analysis in water.
Keywords: water quality, parathion, parathion‑methyl, organophosphorus, dichloromethane extraction, gas chromatography, GC analysis, drinking water testing, environmental monitoring, analytical method.
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Frequently Asked Questions
EN 12918:1999 is a standard published by the European Committee for Standardization (CEN). Its full title is "Water quality - Determination of parathion, parathion-methyl and some other organophosphorus compounds in water by dichloromethane extraction and gas chromatographic analysis". This standard covers: This European Standard specifies the extraction processes and gas chromatographic (GC) methods for determining parathion, parathion-methyl and some other organophosphorus compounds in drinking waters, surface waters and waste waters. This standard may also be suitable for the determination of other organic compounds. The range is dependent on the compound and the source of water and is typically up to 1 ug/l with a reporting limit of 0,001 ug/l for drinking waters involving a 1 000 to 1 extraction ratio.
This European Standard specifies the extraction processes and gas chromatographic (GC) methods for determining parathion, parathion-methyl and some other organophosphorus compounds in drinking waters, surface waters and waste waters. This standard may also be suitable for the determination of other organic compounds. The range is dependent on the compound and the source of water and is typically up to 1 ug/l with a reporting limit of 0,001 ug/l for drinking waters involving a 1 000 to 1 extraction ratio.
EN 12918:1999 is classified under the following ICS (International Classification for Standards) categories: 13.060.50 - Examination of water for chemical substances. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12918:1999 has the following relationships with other standards: It is inter standard links to EN ISO 5667-1:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12918:1999 is associated with the following European legislation: EU Directives/Regulations: 76/464/EEC; Standardization Mandates: M/BC/CEN/92/45. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 12918:1999 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.UJDQRIRVIRUQLKRPDWRJUDILMHWasserbeschaffenheit - Bestimmung von Parathion, Parathion-methyl und einigen anderen Organphosphor-Verbindungen in Wasser mittels Dichlormethan-Extraktion und gaschromatographischer AnalyseQualité de l'eau - Dosage du parathion, méthyl-parathion et certains autres composés organophosphorés dans les eaux apres extraction au dichlorométhane et analyse par chromatographie en phase gazeuseWater quality - Determination of parathion, parathion-methyl and some other organophosphorus compounds in water by dichloromethane extraction and gas chromatographic analysis71.040.50Fizikalnokemijske analitske metodePhy
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