Arsenic in sediments, water and aquatic biota from lakes in the vicinity of Yellowknife, Northwest Territories, Canada

Wagemann, R.; Snow, N. B.; Rosenberg, D. M.; Lutz, A.

doi:10.1007/bf02332047

Cited by 81 publications

(26 citation statements)

References 14 publications

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“…Although this change was not statistically significant, it should be noted that concentrations at this site have been increasing since the 1970s (May and McKinney, 1981;Lowe et al, 1985;Schmitt and Brumbaugh, 1990;Schmitt et al, 1999b). Nationally, the geometric mean concentration of Se in fish (all NCBP stations) declined slightly from 1978(Schmitt and Brumbaugh, 1990), but increased slightly from 1984 to 1986 (Schmitt et al, 1999).…”

Section: Seleniummentioning

confidence: 89%

Concentrations of Arsenic, Cadmium, Copper, Lead, Selenium, and Zinc in Fish from the Mississippi River Basin, 1995

Schmitt

2004

Environ Monit Assess

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Abstract. Fish were collected in late 1995 from 34 National Contaminant Biomonitoring Program (NCBP) stations and 12 National Water Quality Assessment Program (NAWQA) stations in the Mississippi River basin (MRB), and in late 1996 from a reference site in West Virginia. The NCBP sites represented key points (dams, tributaries, etc.) in the largest rivers of the MRB. The NAWQA sites were typically on smaller rivers and were selected to represent dominant land uses in their watersheds. The West Virginia site, which is in an Eastern U.S. watershed adjacent to the MRB, was selected to document elemental concentrations in fish used for other aspects of a larger study and to provide additional contemporaneous data on background elemental concentrations. At each site four samples, each comprising (nominally) 10 adult common carp (Cyprinus carpio, 'carp') or black bass (Micropterus spp., 'bass') of the same sex, were collected. The whole fish were composited by station, species, and gender for analysis of arsenic (As), lead (Pb), and selenium (Se) by atomic absorption spectroscopy and for cadmium (Cd), copper (Cu), and zinc (Zn) by inductively-coupled plasma emission spectroscopy. Concentrations of most of the elements examined were lower in both carp and bass from the reference site, a small impoundment located in a rural area, than from the NCBP and NAWQA sites on rivers and larger impoundments. In contrast, there were few overall differences between NCBP sites NAWQA sites. The 1995 results generally confirmed the continued weathering and re-distribution of these elemental contaminants in the MRB; concentrations declined or were unchanged from 1984-1986 to 1995 at most NCBP sites, thus continuing two-decade trends. Exceptions were Se at Station 77 (Arkansas R. at John Martin Reservoir, CO), where concentrations have been elevated historically and increased slightly (to 3.8-4.7 µg g −1 in bass and carp); and Pb, Cd, and Zn at Station 67 (Allegheny R. at Natrona, PA), where levels of these metals were high in the past and increased from 1986 to 1995.

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Section: Seleniummentioning

confidence: 89%

Concentrations of Arsenic, Cadmium, Copper, Lead, Selenium, and Zinc in Fish from the Mississippi River Basin, 1995

Schmitt

2004

Environ Monit Assess

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“…Because algae and some macrophytes have been shown to take up As as As(V) (Wagemann et al 1978;Sohrin et al 1997), the areal distribution of As in the uppermost sediments could be mostly the result of vegetative die-off, whereby As is returned to the sediments in those places where dead plants and algae comprise a large part of the decomposing materials on the lake bottom. This could, in large part, explain why As concentrations are so high in the tops of the sediment cores, as there are no known major sources of As to the lake at present.…”

Section: Lake Sedimentsmentioning

confidence: 99%

Distribution and seasonal dynamics of arsenic in a shallow lake in northwestern New Jersey, USA

Barringer

Szabó

Wilson

et al. 2010

Environ Geochem Health

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Elevated concentrations of arsenic (As) occurred during warm months in water from the outlet of Lake Mohawk in northwestern New Jersey. The shallow manmade lake is surrounded by residential development and used for recreation. Eutrophic conditions are addressed by alum and copper sulfate applications and aerators operating in the summer. In September 2005, arsenite was dominant in hypoxic to anoxic bottom water. Filterable As concentrations were about 1.6-2 times higher than those in the upper water column (23-25 μg/L, mostly arsenate). Hypoxic/anoxic and near-neutral bottom conditions formed during the summer, but became more oxic and alkaline as winter approached. Acid-leachable As concentrations in lake-bed sediments ranged up to 694 mg/kg in highly organic material from the tops of sediment cores but were <15 mg/kg in geologic substrate. During warm months, reduced As from the sediment diffuses into the water column and is oxidized; mixing by aerators, wind, and boat traffic spreads arsenate and metals, some in particulate form, throughout the water column. Similar levels of As in sediments of lakes treated with arsenic pesticides indicate that most of the As in Lake Mohawk probably derives from past use of arsenical pesticides, although records of applications are lacking. The annual loss of As at the lake outlet is only about 0.01% of the As calculated to be in the sediments, indicating that elevated levels of As in the lake will persist for decades.

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“…The remediation project has three objectives: (1) to work on stabilizing the site of the Giant Mine; (2) to isolate contamination from the surrounding environment; and (3) to rehabilitate the mine site to a safe condition in order to restore ecological processes on the mine lease area [65]. Numerous environmental studies have been conducted on the mine lease area and known discharge pathways of Giant and Con mines since the 1970s (e.g., [54,57,66]). However, little is known about the ecological impact of Giant and Con mines on the surrounding region ( [66]; a summary of literature dealing with environmental studies is presented in Galloway et al [67]).…”

Section: Remediation Planmentioning

confidence: 99%

Lacustrine Arcellinina (Testate Amoebae) as Bioindicators of Arsenic Contamination

et al. 2016

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Arcellininids (testate amoebae) were examined from 61 surface sediment samples collected from 59 lakes in the vicinity of former gold mines, notably Giant Mine, near Yellowknife, Northwest Territories, Canada to determine their utility as bioindicators of arsenic (As), which occurs both as a byproduct of gold extraction at mines in the area and ore-bearing outcrops. Cluster analysis (Q-R-mode) and detrended correspondence analysis (DCA) reveal five arcellininid assemblages, three of which are related to varying As concentrations in the sediment samples. Redundancy analysis (RDA) showed that 14 statistically significant environmental parameters explained 57 % of the variation in faunal distribution, while partial RDA indicated that As had the greatest influence on assemblage variance (10.7 %; p < 0.10). Stress-indicating species (primarily centropyxids) characterized the faunas of samples with high As concentrations (median = 121.7 ppm, max > 10000 ppm, min = 16.1 ppm, n = 32), while difflugiid dominated assemblages were prevalent in substrates with relatively low As concentrations (median = 30.2 ppm, max = 905.2 ppm, min = 6.3 ppm, n = 20). Most of the lakes with very high As levels are located downwind (N and W) of the former Giant Mine roaster stack where refractory ore was roasted and substantial quantities of As were released (as As2O3) to the atmosphere in the first decade of mining. This spatial pattern suggests that a significant proportion of the observed As, in at least these lakes, are industrially derived. The results of this study highlight the sensitivity of Arcellinina to As and confirm that the group has considerable potential for assessing the impact of As contamination on lakes.

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Arsenic in sediments, water and aquatic biota from lakes in the vicinity of Yellowknife, Northwest Territories, Canada

Cited by 81 publications

References 14 publications

Concentrations of Arsenic, Cadmium, Copper, Lead, Selenium, and Zinc in Fish from the Mississippi River Basin, 1995

Concentrations of Arsenic, Cadmium, Copper, Lead, Selenium, and Zinc in Fish from the Mississippi River Basin, 1995

Distribution and seasonal dynamics of arsenic in a shallow lake in northwestern New Jersey, USA

Lacustrine Arcellinina (Testate Amoebae) as Bioindicators of Arsenic Contamination

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