Assessment of Heavy Metals Accumulation and Translocation Potential

Overview

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Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

• Statistical analysis of soil and plants data were done by using Minitab software and MS Excel 2007. Data were represented by using mean and
• Table 1 represents the pH, EC and heavy metals concentrations of soil samples collected from all the sampling sites. The pH of soil samples in all
• the sites ranged from 7.65 to 8.27. The pH range lies from 7 to 8 at all sites, means neutral to alkaline conditions. Site 7 had the lowest pH range
• while site 1 had the highest pH range. The EC of soil samples in all the sampling sites range from 0.56 to 0.98 dS m- 1. The maximum EC was
• contents in soil samples range from 50 to 251 mg kg- 1 . While the range of Ni concentration was from 43 to 65 mg kg- 1. The maximum Pb
• concentration (55.67 mg kg- 1) was observed in site 7. The range of Cr was from 7 to 53 mg kg- 1 at all sites. The Cd concentrations in all the
• Table 2 represents the concentrations of heavy metals (mg kg-1) in plants shoots and roots parts. Total 21 plants species collected from the ten
• species because of 9 variable accumulation capacity for different metals. Total Cd concentrations ranged from 1.5 to 5.43 mg kg-1. Maximum Cd
• higher concentrations of Cd. Average Cr concentrations in all the plants species ranged from 3.67 to 58.05 mg kg-1. Maximum Cr concentrations
• The average concentrations of Pb in shoots part of plant ranged from 5.73 to 26.77 mg kg-1. While in roots, the average concentrations of Pb in
• plants species ranged from 8.70 to 51.67 mg kg-1. The results of the present study showed that C. album, O. cormculata, R. communis and S.
• Table 3 shows the translocation factor for six metals of all the plant species collected from contaminated sites. Among all the plants species, F.
• Table 4 showed bioaccumulation factor (BF) for six metals in all plant species collected from contaminated sites. From the present study, it is
• Table 1. Heavy metals concentrations (mg/kg) in soil samples and soil pH and EC.
• significantly different according to Newman Keul`s multiple range test (P<0.05).
• Table 2: Concentrations of heavy metals (mg/kg) in plants shoot and root parts.
• Normal range in plants 0.1-2.4 d 0.5-1.5b 0.1-10 c 4-15a, b 0.05-10b (mgkg-1) 60-100 b

Methods (brief)

• in Some Native Plants Species Collected from Contaminated Soils
• accumulation and translocation of selected metals (Cd, Cr, Cu, Ni, Pb, Zn). Twenty one plant species were collected from the ten polluted sites of
• were selected for the collection of soil and plants samples.
• 2.2. Soil sampling, Sample preparation and Chemical analysis
• Soil samples were collected randomly from ten locations of canal (with the depth of 0–30 cm) in metropolitan cities. From each site, soil samples
• were collected in replicates to make a composite and brought to laboratory for preparation of soil samples and chemical analysis. In the laboratory,
• soil samples were air dried, grounded into fine powder and sieved by using 2 mm nylon sieves. Soil samples were determined for pH, electrical
• in a ratio of 1:2, and analyzed with pH and EC meter. Soil samples (0.5 g each) were digested (USEPA Method 3050) by using aqua-regia 6 (HCl:
• HNO3; 3:1) and analyzed on atomic absorption spectrophotometer (Model: AA-6650 Shimadzu).
• 2.3. Plant sampling, sample preparation and Chemical analysis
• Plant species were collected from metals contaminated sites. The sampling areas were same from where the soil samples had been collected.
• Rannunculus muricatus L., and Chenopodium album L. were collected from the contaminated sites of Rawalpindi and Islamabad. All plants were
• collected in replicates of three to five samples. For analysis, plant samples were washed with distilled water and separated into shoots and roots.
• Samples were oven dried at 60oC for 48 hours, ground and sieved for further analysis.
• Plant samples were determined for total heavy metals by using block digestion procedure (USEPA Method 3050). Plant samples (0.5 g each)
• digested with aqua-regia (HCl:HNO3; 3:1), and analyzed on atomic absorption spectrophotometer (Model: AA-6650 Shimadzu). All samples were
• Sigma-Aldrich Company) and also run blank samples during each analytical measurement.
• Table 1 represents the pH, EC and heavy metals concentrations of soil samples collected from all the sampling sites. The pH of soil samples in all

Implications

This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.

Wiki pages this source may touch

• Root-Vegetable Purees
• Mercury
• Cadmium
• Lead
• Arsenic
• Nickel
• Chromium

Verification notes

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Update history

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