Abstract：
:Surface water samples were collected from 55 sites in the Great Lakes Basin and analyzed for the presence of perchlorate using HPLC/MS/MS with an isotopically enriched internal standard. Sites included areas impacted by heavy industry, urbanization, agriculture and atmospheric deposition. Perchlorate was detected at several of the sites at concentrations close to the method detection limit (0.2 microg/l). Despite these low concentrations, its presence was confirmed by sample concentration and determination of the isotopic ratio of perchlorate. The presence of perchlorate at two of the sites was related to a fireworks display which had occurred prior to sampling. The other detections of perchlorate were in rivers/creeks draining watersheds which had high density livestock and crop farming activity. We suspect the two are related. To our knowledge, these are the first reported concentrations of perchlorate in Canadian surface waters.
journal_name
Chemospherejournal_title
Chemosphereauthors
Backus SM,Klawuun P,Brown S,D'sa I,Sharp S,Surette C,Williams DJdoi
10.1016/j.chemosphere.2005.04.054subject
Has Abstractpub_date
2005-11-01 00:00:00pages
834-43issue
6eissn
0045-6535issn
1879-1298pii
S0045-6535(05)00596-5journal_volume
61pub_type
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