The predominance of inorganic arsenic species in plants from Yellowknife, Northwest Territories, Canada

Journal Article · Sat Jan 01 04:00:00 EST 2000 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es9906756· OSTI ID:20014612

Koch, I; Wang, L; Ollson, C A; Cullen, W R; Reimer, K J

Elevated levels of arsenic in Yellowknife, NWT, Canada, from historic and recent gold mine operations, are of increasing concern to Yellowknife residents. The study of arsenic in Yellowknife plants is a part of ongoing bioavailability and food chain research. A variety of plants from Yellowknife were analyzed for total arsenic and water soluble arsenic species. The plants included vascular plants and bryophytes (mosses). Total amounts of arsenic were greatest in mosses and varied greatly within specimens of the same plant species from different locations. Mostly inorganic arsenic species were extracted from plants using methanol/water (1:1). This result is very important from a toxicological point of view, since inorganic species are relatively toxic arsenic species. Small amounts of methylated arsenic species, as well as arsenosugars, were present in some plants. On average, greater than 50% of arsenic in these plants was not extracted; the chemical and toxicological characteristics of this fraction remain a topic for further study.

• Research Organization: Royal Military Coll. of Canada, Kingston, Ontario (CA)
• OSTI ID: 20014612
• Journal Information: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 1 Vol. 34; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
ARSENIC
BIOLOGICAL ACCUMULATION
BIOLOGICAL AVAILABILITY
BIOLOGICAL INDICATORS
LAND POLLUTION
NORTHWEST TERRITORIES
PLANTS
ROOT ABSORPTION
SOILS