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201252 · Concentrations of copper (Cu), zinc (Zn) and manganese (Mn) were measured in four tissues of Tree Sparrow (Passer montanus) from three sites in Heilongjiang province, China, during four seasons. Among the four measured tissues (primary feathers, liver, heart, and pectoral muscle), the highest concentrations were found in feathers (Zn) …
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2023124 · Background: The rapid evolution of electronic cigarette (e-cigarette) products warrants surveillance of the differences in exposure across device types—modifiable devices (MODs), cartridge (“pod”)-containing devices (PODs), disposable PODs (d-PODs)—and flavors of the products available on the market. Objective: This …
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20181031 · (and toxicity) in sediment by controlling metal concentration in pore water. Basically, one mole of SEM will react with one mole of AVS and in case AVS exceeds SEM concentrations (SEM/AVS ratio <1), all metals will be bound to sulfides leading to decreased concentration of free metal ions in the pore water and consequently reduced toxicity.
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2020627 · Other metals Antimony, copper, zinc, lead, and nickel are other metals that are common in Oregon soils. Follow the steps in this brochure to reduce your family’s exposure to all heavy metals. Arsenic Arsenic is a naturally occurring metal found in groundwater, mining ores and soil in Oregon. In its solid state, arsenic appears as a silver-
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202341 · The total soil Cd concentrations in BS were lower than the national tolerance limits of risk screening value guided by risk control standard for soil contamination of agricultural land (Cd 0.3 mg kg −1, GB15618-2018); however, those concentrations in MS and HS were 2.3 and 29.33 times than the screening values. Consistent with other
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201151 · Calibration was performed with a blank sample (ultrapure water) and three standards of known concentrations (e.g., 10, 30, and 100 μg/L for copper; depending on the metal and sample concentrations). The limits of detection, based on 3 times of the standard deviation of non-filtered ultrapure water samples, were 0.4 μg/L for copper, 0.12 μg/L ...
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2023513 · Rogue River. Rogue River, situated in southwestern Oregon, has a rich history of gold mining. Since the discovery of gold in the early 1850s, the river has attracted countless prospectors, establishing several mining towns along its banks. Today, the Rogue River remains a popular destination for gold prospectors, boasting several sites open to ...
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202441 · The detected heavy metals concentrations were contrasted to the permissible limit of heavy metal concentration in samples of the present study. The results were quantified and compared using US EPA standard methodology based on the epidemiological data for non-carcinogenic and carcinogenic risks. ... the average …
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2013115 · Relationships between house age and dust metal concentrations were significant for Pb, Cd and Zn (p<.001) but not for the other four metals (.14≥p≤.87). All seven metals, however, displayed a significant increase in metal loading rates with house age (p<.001) due to the influence of higher dust loading rates in older homes (p<.001).
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2024520 · 1. Introduction. Heavy metals, unlike organic pollutants, are non-biodegradable and bio-accumulative. Soil contamination occurs when concentrations surpass self-purification limitations, resulting in prolonged effects on terrestrial ecosystems (Nriagu, 1996).Increasingly jumping demands for agricultural land and global industries …
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