BS ISO BRITISH STANDARD 7981-2:2005 BS 6068-2.96:2005 Water quality Determination of polycyclic aromatic hydrocarbons (PAH) - Part 2: Determination of six PAH by high-performance liquid chromatography with fluorescence detection after liquid-liquid extraction ICS 13.060.50 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSISO7981-2:2005 National foreword This British Standard reproduces verbatim ISO 7981-2:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee EH/3, Water quality, to Subcommittee EH/3/2,Physical, chemical and biochemical methods, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the“Search facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity fromlegal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages i to v, a blank page, pages 1 to 18, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendmentsissued sincepublication This British Standard was Amd. No. Date Comments published under the authority of the Standards Policy and Strategy Committee on 1August 2005 BSI 1 August 2005 ISBN 0 580 46411 3 BS ISO 7981-2:2005 ISO INTERNATIONAL 7981-2 STANDARD First edition 2005-06-15 Water qualityDetermination of polycyclic aromatic hydrocarbons (PAH) 一 Part 2: Determination of six PAH by high- performance liquid chromatography with fluorescence detection after liquid-liquid extraction Qualite de I'eau-Determination des hydrocarbures aromatiques polycycliques (HAP)- Partie 2:Dosage de six HAP par chromatographie de haute performance en phase liquide avec detection fluorimetriquea la suite d'une extraction liquide-liquide Reference number ISO 7981-2:2005(E) = BSIS07981-2:2005 Contents Page Foreword iv Introduction Scope 2 Normativereferences.. 3 Principle. 4 Interferences 5 Reagents 6 Apparatus 7 Sampling.. 8 Procedure 6 9 Calibration 10 Measurementofsamples 11 Determinationoftherecovery.... 12 Blank measurement 10 13 Calculation... 14 Expression of results 10 15 Testreport 11 16 Accuracy... 11 AnnexA(informative)Examples ofchromatographicconditionsandcolumns.. AnnexB(informative)Examplesfortheconstructionofspecialapparatus Annex C (informative)Accuracy..... Bibliography... ili BSISO7981-2:2005 Foreword ISsO (the International Organization for Standardization) is a worldwide federation of national standards bodies non-governmental, in liaison with isO, also take part in the work.iso collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75%of the member bodies casting avote. rights. IsO shall not be held responsible for identifying any or all such patent rights. chemicaland biochemicalmethods. Iso7981 consists of the followingp