EUROPEAN COMMISSION JOINT RESEARCH CENTRE Elements in tap water Part 1 - Initial sampling and measurements Eddo J. Hoekstra, Pier Renato Trìncherini, Valerio Pedroni, Rosanna Passarella, Franck Rieth, Risto Savolainen 2003 EUR 20672 EN IHW INLAND & MARINE WATERS EUROPEAN COMMISSION JOINT RESEARCH CENTRE Elements in tap water Part 1 - Initial sampling and measurements Eddo J. Hoekstra, Pier Renato Trincherini, Valerio Pedroni, Rosanna Passarella, Franck Rieth, Risto Savolainen 2003 EUR 20672 EN BHW INLAND & MARINE WATERS LEGAL NOTICE Neither the European Commission nor any person acting on behalf of then is responsible for the use which might be made of the following information. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server (http://europa.eu.int) EUR 20672 EN © European Communities, 2003 Reproduction is authorised provided the source is acknowledged Printed in Italy Table of contents INTRODUCTION 5 EXPERIMENTAL 9 Sample handlingSensitivity, blanks and detection limitAccuracy and UncertaintyRESULTS 11 Determination of accuracyMigration from sampling bottlesOvernight stagnation3 Effect ofn time9 Random Day Time sampling 2CONCLUSIONS7 RECOMMENDATIONSREFERENCES 31 Correspondence to: E.J. Hoekstra EC DG Joint Research Centre, Institute for Environment and Sustainability, Inland and Marine Waters Unit, Via E.