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Isotopic variation as an index of sulphur pollution in lakes around Sudbury, Ontario


SULPHUR isotopic variations can in principle be used in fingerprinting the sources of sulphur and for tracing the pathways of sulphur migration in the environment (for examples, see refs 1–4). However, few attempts have been made to apply this technique in the study of sulphur pollution of natural waters. We present here results of a study of the distribution and isotopic composition of sulphur in lakes at various distances from the smelter stacks near Sudbury, Ontario. An objective of the study is to ascertain the point source contribution to variations in the isotopic composition of sulphur in these lakes.

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