RISK ASSESSMENT OF HEAVY METALS CONTAMINATION IN SOILS AND SELECTED CROPS IN ZANJAN URBAN AND INDUSTRIAL REGIONS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

AFSHARI A.; KHADEMI H.; AYOUBI SH.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Water and Soil Year:2015 | Volume:29 | Issue:1 Page(s): 151-163

Download Full-Text

Persian Verion

View:

842

Download:

Cites:

Information Journal Paper

Title

RISK ASSESSMENT OF HEAVY METALS CONTAMINATION IN SOILS AND SELECTED CROPS IN ZANJAN URBAN AND INDUSTRIAL REGIONS

Author(s)

AFSHARI A. | KHADEMI H. | AYOUBI SH. | Issue Writer Certificate

Keywords

AGRICULTURE PRODUCTSQ2

BIOLOGICAL RISKQ2

HEAVY METALSQ2

SOILQ2

ZANJAN PROVINCEQ3

Abstract

Introduction: HEAVY METALS are types of elements naturally present in SOIL or enter into SOIL as a result of human activities. The most important route of exposure to HEAVY METALS is daily intake of food. Crops grown in contaminated SOIL (due to mining activities, industrial operations and agriculture) may contain high concentrations of HEAVY METALS. Also closeness to cities and industrial centers can have a great influence on the accumulation of HEAVY METALS to agricultural products grown in the region. The study aimed to determine the concentration of HEAVY METALS in SOIL and agricultural products around urban and industrial areas of ZANJAN PROVINCE (North West of Iran) and consumption hazard probability. Materials and Methods: SOIL (75 samples of SOIL from a depth of 0 to 10 cm) and plant (101 samples) samples, in the summer 2011, were randomly taken from industrial areas as follow: tomatoes (Lycoper sicumesculentum M), wheat seed (Triticum vulgare), barley seeds (Hordeum vulgare), alfalfa shoots (Medicago sativaL.), potato tubers (Solanumtuberosum L.), apple fruit, vegetables and fruits such as Dill (Aniethum graveolensL.), leek (Allium porrum L.), Gardencress (Barbara verna L.) and basil (Ocimum basilicum L.). Plant sampleswere then washed with distilled water, oven dried for48 hours at a temperature of 70 ´C until constant weight was attained and then they digested using 2 M hydrochloric acid (HCl) and nitric acid digestion in 5 M. Concentrations of HEAVY METALS in the SOIL and crops were determined by atomic absorption spectrometry. DTPAextraction of metals by Lindsay and Norvell (1978) method and sequential extraction method by Tessier et al. (1979) were performed. Statistical analysis was accomplished using the software SPSS 16.0 and the comparisonof mean values was done using the Duncan test at the 5% level of significance.Results and Discussion: The magnitude of variations for total copper was from 11.5 to 352.5 (average 52.4), zinc was from 96.3 to 1353.8 (average 264.8), lead was between 40.0 and 470.0 (average 105.7), nickel rangedfrom 12.8 to 77.0 (average 46.7) and chromium varied from 10.0 to 49.5 (average 21.7) mg kg-1. DTPAextracted HEAVY METALS for copper varied from 1.50 to 21.23, averaging 4.47, zinc from 0.57 to 76.50 averaging 23.15, lead from 2.43 to 63.38 averaging 16.81 and nickel from 0.28 to 2.32 averaging 1.20 mg kg-1. Chemicalchanges in the different fractions were as follows: Cu (residual>bounded to organic matter>bounded to Fe-Mnoxides>bounded to carbonate>exchangeable fraction), Zn and Ni (residual>bounded to Fe-Mn oxides>bounded to carbonate>bounded to organic matter>exchangeable fraction,) and Pb (residual>bounded to Fe Mn oxides>bounded to organic matter>bounded to carbonate>exchangeable fraction). The concentration of HEAVY METALS in plant parts were high with respect to studied location. The highest amounts of Zn (Garden cress), Pb (Dill), Cu (Leek), Ni (Basil) and Cr (Basil), respectively were found to be 150.25, 41.25, 23.13, 6.46 and 3.47mg kg-1 and the minimum amounts of the metals studied were found in fruits, wheat and barley grains. The to talamount of metals in plants were as follow (Zn>>Pb>Cu>Ni>Cr). Bioaccumulation factor (BAF) of metalsin plants were as Zn=Cu>Pb>>Cr>Ni. Hazard probability (HQ) in cancerous diseases for each element (except Pb) in both children and adults was less than unit. HQ content of Pb was much higher than the unit and for children and adults 9.07 and 6.94, respectively showing high contribution of Pb contamination of crops that hreatens the consumer health in that location. The total amount of risk (THQ) in children was higher than that inadults.Conclusions: The results obtained in this study indicate that an urgent attention is required for consumerproducts related to public health, especially vegetables grown in the studied regions. Toxic effects of HEAVY METALS have many deleterious effects which are more pronounced over time. With conventional monitoring of food quality produced in farms and presented in markets, excessive accumulation of HEAVY METALS entering in to the human food chain can be prevented. Also, we can change the risk potential of HEAVY METALS in the region by growing vegetables which accumulate HEAVY METALS.

Cites

No record.

References

No record.

Cite

APA: Copy

AFSHARI, A., KHADEMI, H., & AYOUBI, SH.. (2015). RISK ASSESSMENT OF HEAVY METALS CONTAMINATION IN SOILS AND SELECTED CROPS IN ZANJAN URBAN AND INDUSTRIAL REGIONS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 29(1), 151-163. SID. https://sid.ir/paper/141046/en

Vancouver: Copy

AFSHARI A., KHADEMI H., AYOUBI SH.. RISK ASSESSMENT OF HEAVY METALS CONTAMINATION IN SOILS AND SELECTED CROPS IN ZANJAN URBAN AND INDUSTRIAL REGIONS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2015;29(1):151-163. Available from: https://sid.ir/paper/141046/en

IEEE: Copy

A. AFSHARI, H. KHADEMI, and SH. AYOUBI, “RISK ASSESSMENT OF HEAVY METALS CONTAMINATION IN SOILS AND SELECTED CROPS IN ZANJAN URBAN AND INDUSTRIAL REGIONS,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 29, no. 1, pp. 151–163, 2015, [Online]. Available: https://sid.ir/paper/141046/en

Related Journal Papers