IAEA RADIOISOTOPES AND RADIOPHARMACEUTICALS SERIES No. 2 This book provides information on the production and processing of four important long lived parent radionuclides, 68Ge, 82Sr, 90Sr and 188W, used for the preparation of generators for nuclear medicine applications such as positron emission tomography and therapy. It includes descriptions of the production routes for and process chemistry of the selected parent radionuclides, including relevant separation approaches. Information on use of the generator system and on physical and chemical characteristics is also provided. Production of Long Lived Parent Radionuclides for Generators: 68 82 90 188 Ge, Sr, Sr and W INTERNATIONAL ATOMIC ENERGY AGENCY VIENNA ISBN 978–92–0–101110–7 ISSN 2077–6462 10-03151_P1436_cover.indd 1 2010-05-06 10:29:07 Production of Long Lived Parent Radionuclides for Generators: 68Ge, 82Sr, 90Sr and 188W RELATED PUBLICATIONS IAEA RADIOISOTOPES AND TECHNETIUM-99M RADIOPHARMACEUTICALS: STATUS AND TRENDS RADIOPHARMACEUTICALS SERIES PUBLICATIONS IAEA Radioisotopes and Radiopharmaceuticals Series No. 1 STI/PUB/1405 (360 pp.; 2009) One of the main objectives of the IAEA Radioisotope Production and Radiation Technology ISBN 978–92–0–103509–7 Price: €52.00 programme is to enhance the expertise and capability of IAEA Member States in deploying CYCLOTRON PRODUCED RADIONUCLIDES: emerging radioisotope products and generators for medical and industrial applications in order to meet national needs as well as to assimilate new developments in radiopharmaceuticals for GUIDELINES FOR SETTING UP A FACILITY diagnostic and therapeutic applications. This will ensure local availability of these applications Technical Reports Series No. 471 within a framework of quality assurance. STI/DOC/010/471 (213 pp.; 2009) Publications in the IAEA Radioisotopes and Radiopharmaceuticals Series provide ISBN 978–92–0–103109–9 Price: €45.00 information in the areas of: reactor and accelerator produced radioisotopes, generators and sealed sources development/production for medical and industrial uses; radiopharmaceutical sciences, THERAPEUTIC RADIONUCLIDE GENERATORS: including radiochemistry, radiotracer development, production methods and quality assurance/ 90 90 188 188 SR/ Y AND W/ RE GENERATORS quality control (QA/QC). The publications have a broad readership and are aimed at meeting the needs of scientists, engineers, researchers, teachers and students, laboratory professionals, and Technical Reports Series No. 470 instructors. International experts assist the IAEA Secretariat in drafting and reviewing these STI/DOC/010/470 (233 pp.; 2009) publications. Some of the publications in this series may also be endorsed or co-sponsored by ISBN 978–92–0–111408–2 Price: €45.00 international organizations and professional societies active in the relevant fields. There are two categories of publications: the IAEA Radioisotopes and CYCLOTRON PRODUCED RADIONUCLIDES: Radiopharmaceuticals Series and IAEA Radioisotopes and Radiopharmaceuticals Reports. PHYSICAL CHARACTERISTICS AND PRODUCTION METHODS Technical Reports Series No. 468 IAEA RADIOISOTOPES AND RADIOPHARMACEUTICALS SERIES STI/DOC/010/468 (279 pp.; 2009) Publications in this category present guidance information or methodologies and analyses of long term validity, for example protocols, guidelines, codes, standards, quality assurance manuals, ISBN 978–92–0–106908–5 Price: €52.00 best practices and high level technological and educational material. TECHNETIUM RADIOPHARMACEUTICALS: IAEA RADIOISOTOPES AND RADIOPHARMACEUTICALS REPORTS MANUFACTURE OF KITS In this category, publications complement information published in the IAEA Radioisotopes Technical Reports Series No. 466 and Radiopharmaceuticals Series in areas of the: development and production of radioisotopes and STI/DOC/010/466 (202 pp.; 2008) generators for medical and industrial applications; and development, production and QA/QC of ISBN 978–92–0–100408–6 Price: €50.00 diagnostic and therapeutic radiopharmaceuticals. These publications include reports on current issues and activities such as technical meetings, the results of IAEA coordinated research projects, CYCLOTRON PRODUCED RADIONUCLIDES: interim reports on IAEA projects, and educational material compiled for IAEA training courses PRINCIPLES AND PRACTICE dealing with radioisotope and radiopharmaceutical related subjects. In some cases, these reports may provide supporting material relating to publications issued in the IAEA Radioisotopes and Technical Reports Series No. 465 Radiopharmaceuticals Series. STI/DOC/010/465 (230 pp.; 2008) ISBN 978–92–0–100208–2 Price: €45.00 All of these publications can be downloaded cost free from the IAEA web site: COMPARATIVE EVALUATION OF THERAPEUTIC http://www.iaea.org/Publications/index.html RADIOPHARMACEUTICALS Technical Reports Series No. 458 Further information is available from: STI/DOC/010/458 (310 pp.; 2007) Marketing and Sales Unit ISBN 92–0–115106–3 Price: €56.00 International Atomic Energy Agency Vienna International Centre LABELLING OF SMALL BIOMOLECULES PO Box 100 USING NOVEL TECHNETIUM-99M CORES 1400 Vienna, Austria Technical Reports Series No. 459 STI/DOC/010/459 (312 pp.; 2007) Readers are invited to provide feedback to the IAEA on these publications. Information may ISBN 92–0–101607–7 Price: €70.00 be provided through the IAEA web site, by mail at the address given above, or by email to: TRENDS IN RADIOPHARMACEUTICALS (2 volumes) PRODUCTION OF LONG LIVED PARENT RADIONUCLIDES FOR 68 82 90 188 GENERATORS: Ge, Sr, Sr AND W The following States are Members of the International Atomic Energy Agency: AFGHANISTAN GHANA NORWAY ALBANIA GREECE OMAN ALGERIA GUATEMALA PAKISTAN ANGOLA HAITI PALAU ARGENTINA HOLY SEE PANAMA ARMENIA HONDURAS PARAGUAY AUSTRALIA HUNGARY PERU AUSTRIA ICELAND PHILIPPINES AZERBAIJAN INDIA POLAND BAHRAIN INDONESIA PORTUGAL BANGLADESH IRAN, ISLAMIC REPUBLIC OF QATAR BELARUS IRAQ REPUBLIC OF MOLDOVA BELGIUM IRELAND ROMANIA BELIZE ISRAEL RUSSIAN FEDERATION BENIN ITALY SAUDI ARABIA BOLIVIA JAMAICA SENEGAL BOSNIA AND HERZEGOVINA JAPAN SERBIA BOTSWANA JORDAN SEYCHELLES BRAZIL KAZAKHSTAN SIERRA LEONE BULGARIA KENYA BURKINA FASO KOREA, REPUBLIC OF SINGAPORE BURUNDI KUWAIT SLOVAKIA CAMBODIA KYRGYZSTAN SLOVENIA CAMEROON LATVIA SOUTH AFRICA CANADA LEBANON SPAIN CENTRAL AFRICAN LESOTHO SRI LANKA REPUBLIC LIBERIA SUDAN CHAD LIBYAN ARAB JAMAHIRIYA SWEDEN CHILE LIECHTENSTEIN SWITZERLAND CHINA LITHUANIA SYRIAN ARAB REPUBLIC COLOMBIA LUXEMBOURG TAJIKISTAN CONGO MADAGASCAR THAILAND COSTA RICA MALAWI THE FORMER YUGOSLAV CÔTE D’IVOIRE MALAYSIA REPUBLIC OF MACEDONIA CROATIA MALI TUNISIA CUBA MALTA TURKEY CYPRUS MARSHALL ISLANDS UGANDA CZECH REPUBLIC MAURITANIA UKRAINE DEMOCRATIC REPUBLIC MAURITIUS UNITED ARAB EMIRATES OF THE CONGO MEXICO UNITED KINGDOM OF DENMARK MONACO GREAT BRITAIN AND DOMINICAN REPUBLIC MONGOLIA NORTHERN IRELAND ECUADOR MONTENEGRO UNITED REPUBLIC EGYPT MOROCCO OF TANZANIA EL SALVADOR MOZAMBIQUE UNITED STATES OF AMERICA ERITREA MYANMAR URUGUAY ESTONIA NAMIBIA UZBEKISTAN ETHIOPIA NEPAL FINLAND NETHERLANDS VENEZUELA FRANCE NEW ZEALAND VIETNAM GABON NICARAGUA YEMEN GEORGIA NIGER ZAMBIA GERMANY NIGERIA ZIMBABWE The Agency’s Statute was approved on 23 October 1956 by the Conference on the Statute of the IAEA held at United Nations Headquarters, New York; it entered into force on 29 July 1957. The Headquarters of the Agency are situated in Vienna. Its principal objective is “to accelerate and enlarge the contribution of atomic energy to peace, health and prosperity throughout the world’’. IAEA RADIOISOTOPES AND RADIOPHARMACEUTICALS SERIES No. 2 PRODUCTION OF LONG LIVED PARENT RADIONUCLIDES FOR 68 82 90 188 GENERATORS: Ge, Sr, Sr AND W INTERNATIONAL ATOMIC ENERGY AGENCY VIENNA, 2010 COPYRIGHT NOTICE All IAEA scientific and technical publications are protected by the terms of the Universal Copyright Convention as adopted in 1952 (Berne) and as revised in 1972 (Paris). The copyright has since been extended by the World Intellectual Property Organization (Geneva) to include electronic and virtual intellectual property. Permission to use whole or parts of texts contained in IAEA publications in printed or electronic form must be obtained and is usually subject to royalty agreements. Proposals for non-commercial reproductions and translations are welcomed and considered on a case-by-case basis. Enquiries should be addressed to the IAEA Publishing Section at: Marketing and Sales Unit, Publishing Section International Atomic Energy Agency Vienna International Centre PO Box 100 1400 Vienna, Austria fax: +43 1 2600 29302 tel.: +43 1 2600 22417 email: FOREWORD Radionuclide generators represent convenient in-house radionuclide production systems that allow daughter species to be obtained even in the absence of on-site reactor or accelerator facilities. The resurgence in interest in the use of radionuclide generator systems is due to the development of new targeting strategies using specific carrier molecules for the development of both diagnostic and therapeutic radiopharmaceuticals. This publication provides information on the production and processing of 68 82 90 188 four important long lived parent radionuclides, Ge, Sr, Sr and W, used for the preparation of generators for nuclear medicine applications such as positron 68 68 emission tomography (PET) or therapy. Germanium-68 is used for the Ge/ Ga 68 generator system, which provides no-carrier-added Ga for use in PET imaging. Gallium-68 labelled tumour specific peptides are now in routine use for PET imaging of certain types of cancer. Strontium-82 is used as the parent for the 82 82 production of Sr/ Rb generator systems. Rubidium-82 is an important PET marker for myocardial perfusion studies. This report describes the processing and 90 90 purification of Sr from fission products, which can provide Sr suitable for 90 90 fabrication of the Sr/ Y generator. Yttrium-90 is widely used for a variety of important therapeutic applications. Reactor production and subsequent 188 processing of W provides this important parent species for fabrication of the 188 188 188 W/ Re generator system to obtain Re perrhenate for incorporation into various therapeutic agents. The IAEA thanks all the consultants who contributed to this publication, as well as the reviewers. F.F. Knapp, Jr., of the Oak Ridge National Laboratory, USA, provided valuable help in editing the manuscript. The IAEA officer responsible for this publication was M.R.A. Pillai of the Division of Physical and Chemical Sciences. EDITORIAL NOTE The use of particular designations of countries or territories does not imply any judgments by the publisher, the IAEA, as to the legal status of such countries or territories, of their authorities and institutions or of the delimitation of their boundaries. The mention of names of specific companies or products (whether or not indicated as registered) does not imply any intention to infringe proprietary rights, nor should it be construed as an endorsement or recommendation on the part of the IAEA. The authors are responsible for having obtained the necessary permission for the IAEA to reproduce, translate or use material from sources already protected by copyrights. CONTENTS CHAPTER 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2. Objective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 References to Chapter 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 CHAPTER 2. PRODUCTION, RADIOCHEMICAL PROCESSING 68 AND QUALITY EVALUATION OF Ge . . . . . . . . . . . . 11 F. Roesch, D.V. Filosofov 2.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.3. Nuclear decay characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 68 2.4. Ge production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.5. Chemical aspects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.6. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 References to Chapter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 82 CHAPTER 3. PRODUCTION AND PROCESSING OF Sr . . . . . . . . . 31 K.D. John, L. Mausner, T.J. Ruth 3.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.2. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.3. Nuclear decay characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.4. Production processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 3.5. Chemical aspects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 3.6. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 References to Chapter 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 CHAPTER 4. RECOVERY, PURIFICATION AND QUALITY 90 EVALUATION OF Sr . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 S.K. Samanta 4.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.2. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 4.3. Nuclear decay characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 90 4.4. Processes for the recovery of Sr from radioactive waste . . . . 55 4.5. Purification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 90 4.6. Methods for evaluation of the quality of Sr . . . . . . . . . . . . . . . 71 4.7. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 References to Chapter 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 CHAPTER 5. REACTOR PRODUCTION 188 AND PROCESSING OF W . . . . . . . . . . . . . . . . . . . . . . 79 F.F. Knapp, Jr., S. Mirzadeh, M. Garland, B. Ponsard, R. Kuznetsov 5.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 5.2. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 5.3. Nuclear decay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 5.4. Production and processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 5.5. Chemical aspects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 188 5.6. Processing of W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 5.7. Radiological controls and radiation protection . . . . . . . . . . . . . 98 5.8. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 References to Chapter 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 CONTRIBUTORS TO DRAFTING AND REVIEW . . . . . . . . . . . . . . . . . 111