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Arsenic tissue concentration of immature mice one hour after oral exposure to gold mine tailings

Content Provider	Springer Nature Link
Author	Golub, Mari S. Keen, Carl L. Commisso, Joel F. Salocks, Charles B. Hathaway, T.R.
Copyright Year	1999
Abstract	A potentially high bioavailability of arsenic in gold mine tailings from a site in northern California has been suggested by solubility studies. To help address this issue, an in vivo dosing study was conducted using 12‐day‐old Swiss Webster mouse pups (n=8/group). A sample of size‐fractionated mine tailings from the site (<20 μm particle size, 691 μg g−1 arsenic) was prepared as an aqueous suspension and administered by gavage in a volume that provided 4 mg As/kg body weight. The control group received the same volume of a commercial soil (1 μg g−1 As) of similar particle size (<60 μm). No mortality or toxic signs were noted in either group. Tissue samples were collected 1 h after gavage, freeze‐dried, microwave‐digested and analysed for arsenic by ICP/MS (detection limit 2 ng As g−1 dry weight). Arsenic concentrations (ng As g−1 dry weight) in tissues from the pups who received mine tailings were significantly higher than in control tissues. The mean elevation in arsenic concentration was highest in the liver (3364% of control, p<0.0001), followed by blood (818 of control, p<0.0001), skin (207% of control, p=0.07), and brain (143% of control, p<0.0001). The carcass arsenic concentration (excluding the GI tract, liver, brain and skin) was 138 of control (p=0.02). The data indicate uptake of arsenic from weathered mine tailings by the immature mouse pups after oral exposure.
Starting Page	199
Ending Page	209
Page Count	11
File Format	PDF
ISSN	02694042
Journal	Environmental Geochemistry and Health
Volume Number	21
Issue Number	3
e-ISSN	15732983
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geochemistry Public Health/Gesundheitswesen Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Medicine Geochemistry and Petrology Environmental Engineering Water Science and Technology

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