concentrations of metals in quarry rock mg kg Oct

Soil Arsenic in Miami-Dade County

Arsenic concentrations ranged from 3.3–13 mg/kg for bedrocks collected from the south Everglades (Chen et al. 2000). Samples collected from marl (sedimentary soil par-ent material containing predominantly calcium carbonate) soils that overlie these rocks in the Everglades had 0.6–29.8 mg/kg As, with 4 mg/kg as the average concentration of As

Assessment of trace metals contamination in sediment and ...

The average concentration of Pb in the residues takes the maximum value compared to the other studied metals with: Pb (5547 mg/kg), Cu (119 mg kg/kg), Zn (686 mg/kg), As (192.2 mg/kg) and Cd (1.3 mg/kg) (El Hachimi et al. 2005); this suggests an abnormal dispersion of Pb in the studied lakes; this metal despite its low mobility and high density ...

Cadmium in soils and groundwater: A review | Science ...

The crustal average Cd content is 0.2 mg/kg. In soils, Cd occurs at concentrations of 0.01 to 1 mg/kg with a worldwide mean of 0.36 mg/kg. Weathering of parent materials leads to Cd concentrations up to 5 µg/L in soil water and up to 1 µg/L in groundwater. In aqueous solutions, Cd generally occurs as the divalent Cd2+ ion.

ENVIRONMENTAL ASSESSMENT OF MINE TAILINGS: CAN-ETILI …

The results showed that the sediments, mine tailings and outcrops contain several toxic metals at elevated concentrations. The most dominant metal contaminants found were: Pb (79 mg/kg), Ba (190 mg/kg) and Ni (470 mg/kg) in mine tailings; Pb (64 mg/kg), Ba (310 mg/kg) and Ni (570 mg/kg) in lake sediments; and Pb (96 mg/kg), Ba (279 mg/kg) and ...

2013.04.08 Interim Corrective Measures Completion Report ...

the Industrial SCO (5.7 mg/kg). A blind field duplicate sample collected from SWMU 12 SB-25 contained arsenic at a concentration of 17.5 mg/kg, which is greater than the Industrial SCO of 16 mg/kg; however, the arsenic concentration for the sample SWMU SB-25 (5.11 mg/kg) did not exceed the SCO. Analytical results for soil samples

Heavy metal content and toxicity of mine and quarry soils ...

12%The metal concentrations in the quarry soils from the different areas are highly variable, especially Cr pseudo-total contents (Table 2); this is related to the occurrence of metal ores, whose accumulations depend on natural and anthropogenic factors, like historical quarrying, as well as on how the waste was deposited, among other factors.

Assessment of Heavy Metal Pollution in Soils from Farms in ...

This is attributed to activities of the quarry which generates dust and waste harbouring heavy metals. 2 While dry season concentrations for control (Background) soils at depth of 0.0- 5.0cm &5.0 -10cm for Cr (4.95 & 1.21mg/kg), Cu (0.08 & 0.04mg/kg), Cd (0.08 &0.09mg/kg), and Fe (111.89 & 110.46mg/kg) respectively were higher than in the ...

WORKPLAN FOR CHARACTERIZATION OF EASTERN AND …

These data indicate that the leachable fraction of the total concentrations present in mined materials is small. For example, total concentrations of selenium range from 2.4 to 15 mg/kg in mined material, whereas the CAM WET leachate results are significantly lower at <0.38 to 6 µg/l. In addition, none of the CAM WET leachate concentrations exceed

Health risk assessment of trace metals in selected food ...

The daily intake of metals (DIM), target hazard quotient (THQ), and carcinogenic risk (CR) assessments of health risks accompanied by the continuous ingestion of the selected food crops polluted through these trace metals were evaluated. 0.23 mg/kg and 0.05 mg/kg, 0.11 mg/kg and 0.02 mg/kg, 0.78 mg/kg and 0.65 mg/kg, and 0.23 mg/kg and 0.09 mg ...

Superfund Record of Decision: Fort Hartford Coal Co. Stone ...

Superfund Record of Decision: Fort Hartford Coal Co. Stone Quarry (OU 1), Olaton, KY 3/30/1995. EPA/ROD/R04-95/226 June 1995 EPA Superfund Record of Decision: Fort Hartford Coal Co. Stone Quarry (OU 1), Olaton, KY 3/30/1995.

Toxic and heavy metals contamination assessment in soil ...

The mean concentration of Hg in both soil and water samples was found under the standard limit set by WHO (soil: 0.08 mg kg −1, water: 0.006 mg L …

Dredging & Dumping | OSPAR Commission

The calculated average concentrations, in mg/kg, dry weight (dw), for the trace metals are comparable to those described in the OSPAR Quality Status Report 2010. Although yearly fluctuations can be seen, there do not appear to be any meaningful increases or decreases across the entire assessment period.

Federal Register :: National Oil and Hazardous Substances ...

Final confirmation sampling results indicated that the zinc concentrations in the bottom of the excavation ranged from 55.6 mg/kg to 161 mg/kg, with an average concentration of 94.7 mg/kg, well below the cleanup standard of 200.2 mg/kg.

African Journal of Environmental Science and Technology ...

Limestone rocks samples displayed a high concentration of Fe and Mn improvement. Toxic metals concentrations (mg/kg) in top-soil with background levels were discovered in Hg, Fe, Mn, Ni, Zn, Cd, Cu, Cr and Pb. Residual phases exhibited the lowest enrichment for most metals possibly, because of high loamy sand content.

EPA Region 3 RCRA Corrective Action Statement of Basis for ...

Arsenic concentrations ranged from 5.55 milligrams per kilogram (mg/kg) to I 0.4 mg/kg, which exceeded both the Tier II SL of 0.439 mg/kg and the Tier III SL of . 1.60 . mg/kg. However, the levels of arsenic detected are representative of background levels (6.68 to I 0.3 mg/kg) based on a statistical comparison of on Site arsenic levels to ...

Establishing the Origin of Elevated Uranium Concentrations ...

The average U contents in the rock samples were relatively high: 35.8 mg/kg in coaly slate, 5.1 mg/kg in slate, 3.1 mg/kg in phyllite, 2.1 mg/kg in limestone, 3.9 mg/kg in meta-arenaceous rocks, and 3.7 mg/kg in granite. In contrast, groundwater in these rocks showed very low U concentrations, <10 μg/L (Hwang, 2010).

Original Research Influence of Wind Direction on the Level ...

158.7 mg/kg d.m,, 283 mg/kg d.m,, 136.7 mg/kg d.m) in D. stramonium. Higher concentrations of Cu and Mn were recorded in P. maximum to the northwest (1045 mg/kg d.m) and northeast (178.51 mg/kg d.m) of the site, respectively (Table 1). The highest concentration of Fe was recorded to the southwest for all three plants; it ranged from 989 mg/kg

Trace element content of fish feed and bluegill sunfish ...

The average Hg levels obtained in this study for bluegill muscles from the wastewater (0.19 mg/kg wet wt.) and rock quarry (0.24 mg/kg wet wt.) ponds were slightly higher than the average values (above: 0.13, along: 0.14, and below: 0.16 mg/kg wet wt.) reported for bluegill muscles from Savannah River, USA (Burger et al., 2001).

Determination of heavy metal concentration in soils used ...

The results obtained revealed that the mean heavy metal concentrations for Fe, Zn, Mn, Cu, Co, Ni, Cd, and Pb were 23,866–32,262 mg/kg, 137.1–213.4 mg/ kg, 401.8–583.7 mg/kg, 52.1–77.3 mg/kg, 106.6–177.6 mg/kg, 87.5–123.5 mg/kg, 2.3–2.5 mg/kg, and 13.8–23.2 mg/kg, respectively. In general, the levels of metals in soil collected ...

Lead, Cadmium and Iron Concentrations in Zea Mays Grown ...

Concentrations of Pb, Cd and Fe in maize-parts were significantly higher (P ≤ 0.05) than those cultivated on the reference site soil. Roots had the highest concentration of Pb (40.95±1.98 mg/L) and Cd (2.84±0.19 mg/L). In all maize-parts, bio-accumulation factor of the heavy metals was less than 1.

Contamination and spatial distribution of heavy metals in ...

Pb and Cu had high concentrations (469.2 and 404.4 mg/kg respectively) with high variations. Cd rated next in soil content (298.9 mg/kg) while Cr and Zn soil contents were 186.2 and 168.1 mg/kg respectively . This high Pb and Cu content of the soil principally could have come from the synergistic deposition effects from cement production ...

State of Oregon: Department of Environmental Quality

Methane is due to degradation of organic matter in fill soils. Metals (iron and manganese) in surface water seeps are likely from native soil/basalt rock and may have been mobilized due to changes in the soil redox potential from filling. Manner and Time of Release: Former quarry pit backfilling and unauthorized disposal of solid waste.

Metals in Tortula muralis from sandstone buildings in an ...

The concentrations of the investigated metals in T. muralis from all the Wrocław sites exceeded those given for the similar Tortula ruralis of the same genus from Southern Spitsbergen collected at the beginning of June, immediately after snow melting (mg kg −1): Cd 0.9, Cu 6.9, Ni 3.6, Pb 5.2 and Zn 32, and considered by Grodzinska and ...

The Absorption and Distribution of Heavy Metals of ...

In contrast, the concentrations of Cd and Ni in the substrate material were generally upward overall. In addition, the concentration of Cd and Ni in the substrate material increased 5.71 and 2.23 times, respectively, from 0.14 to 0.80 mg kg -1 and 23.52 to 52.46 mg kg-1. The high concentration of these metals in stone coal might be one of the ...

Assessment of the metal pollution in surface sediments of ...

The determined mean metal concentrations were as follows: Al 49,772 mg/kg, Zn 84.40 mg/kg, Cr 83.70 mg/kg, V 76.45 mg/kg, Ni 42.53 mg/kg, Cu 34.27 mg/kg, Pb 26.30 mg/kg, As 12.49 mg/kg, and Hg 0.06 mg/kg. The metals in the surface sediments of Tasaul Lake displayed moderate spatial variation, with higher metal concentrations mainly occurring in ...

Concentrations of Lithium in Chinese Coals

(Received 2 October 2009; accepted 5 March 2010) Abstract Lithium is an important energy metal. Its concentrations in coals have been studied by many geologists. Its average content is only 14 mg/kg in the coals of the world. Lithium has never been reported as a coal associated deposit before.

Assessment of Lead, Zinc and Cadmium Contamination in the ...

0.01433 mg/kg-1 dry weight (Table 1). Data in Table 1 reveal that in NARC station, the extractable mean values of heavy metals (Pb, Zn and Cd) in date palm washing residues were 1.9931, 34.915 and 0.02485 mg kg-1, in DH station 0.829, 30.394 and 0.0178 mg kg-1, while in ADS station 1.0967, 30.532 and 0.01433 mg kg-1, respectively. Table 1.

(PDF) EVALUATION OF COPPER AND ZINC CONCENTRATION IN ...

Heavy metals contents in agricultural topsoils in the Ebro basin (Spain). Application of the multivariate geoestatistical methods to study spatial variations. By Jose Antonio Rodriguez Martin and José Corb ...