Impact factors and ranks of selected journals in categories according to 

SCI journal citation reports (2007):

Name of Journal Impact factor Category and Rank
Applied Radiation and Isotopes 1.008 Nuclear Science & Technology: 8/31
Aquatic Toxicology 2.975 Marine & Freshwater Biology: 3/86
Atmospheric Environment 2.549 Environmental Sciences: 26/160
Applied Spectroscopy 1.902 Instruments and Instrumentation: 9/55

Chemosphere

2.739 Environmental Sciences: 24/160

Computer Physics Communications

1.842 Computer Science, Interdisciplinary applications: 16/92

Environmental Modelling & Software

2.099 Computer Science, Interdisciplinary applications: 12/92
Environmental Science & Technology 4.363 Environmental Sciences: 4/160
Environmental Toxicology and Chemistry 2.309 Environmental Sciences: 35/160
Health Physics 0.870 Nuclear Science & Technology: 13/31
IEEE Transactions on Nuclear Science 1.107 Nuclear Science & Technology: 5/31
International Journal of Radiation Oncology Biology and Physics 4.290 Radiology: 6/87
International Journal of Radiation Biology 1.468 Nuclear Science & Technology: 2/31
Journal of Environmental Radioactivity 0.963 Environmental Sciences: 109/160
Journal of Hazardous Materials 2.337 Engineering, Civil: 1/88
Journal of Radiological Protection 0.903 Nuclear Science & Technology: 12/31
Marine Biology 2.215 Marine & Freshwater Biology: 17/86
Marine Ecology Progress Series 2.546 Marine & Freshwater Biology: 8/86
Marine Pollution Bulletin 2.334 Environmental Sciences: 33/160
Materials Chemistry and Physics 1.871 Materials Science, Multidisciplinary: 42/189
Materials Science and Engineering R 14.400 Materials Science, Multidisciplinary: 4/189;   Physics, Applied: 2/94
Medical Physics 3.198 Radiology: 16/87
Nuclear Instruments & Methods in Physics Research, A 1.114 Nuclear Science & Technology: 4/31
Nuclear Instruments & Methods in Physics Research, B 0.997 Nuclear Science & Technology: 9/31
Physics in Medicine and Biology 2.528 Engineering, Biomedical: 9/44
Polymer Degradation and Stability 2.073 Polymer Science: 14/74
Radiation and Environmental Biophysics 1.070 Environmental Sciences: 101/160
Radiation Measurements 1.054 Nuclear Science & Technology: 7/31
Radiation Protection Dosimetry 0.528 Nuclear Science & Technology: 17/31
Radiation Research 2.599 Radiology: 23/87
Radiotherapy and Oncology 4.074 Radiology: 9/87
Surface & Coatings Technology 1.678 Materials Science, Coatings & Films: 4/18
X-ray Spectrometry 1.117 Spectroscopy: 39/39