1. Biogeochemistry and Environmental Analytical Chemistry Research Group
2. University of Plymouth
3. Plymouth
4. UK
5. Supra-Regional Assay Service
6. Trace Element Laboratory
7. Guildford
8. Speciation and Environmental Analysis Research Group
9. Departamento de Química Analítica
10. Facultad de Ciencias Químicas
11. Universidad Complutense de Madrid
12. 28040 Madrid
13. Spain
14. Department of Chemistry
15. University of Massachusetts Amherst
16. Amherst
17. USA