Study of heavy metal pollutant concentration in soil and edible leafy vegetables and risk assessment of its consumption with hazard quotient index

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SEILSEPOUR MOHSEN

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Journal: HORTICULTURAL PLANT NUTRITION Year:2020 | Volume:3 | Issue:2 Page(s): 145-158

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Title

Study of heavy metal pollutant concentration in soil and edible leafy vegetables and risk assessment of its consumption with hazard quotient index

Author(s)

SEILSEPOUR MOHSEN | Issue Writer Certificate

Keywords

Biological Concentration Factor

Cadmium

Lead

Nickle

Abstract

Introduction: Nowadays chemical pollutants endanger human health and the environment. Heavy metals are among these pollutants that have been named because of their high atomic weight and atomic density greater than four grams per cubic centimeter. Heavy metals are not decomposed by living organisms, and most of them forms are stable compounds in nature. There is no comprehensive information on the concentration of pollutants such as nitrate and heavy metals and the risk assessment of the consumption of vegetable, especially leafy vegetables in farms in the southeast of Tehran province. Material and methods: To investigate the concentration of nitrate and heavy metals including Lead, Cadmium and nickel in leafy vegetables and risk assessment of the use of this product, this study was conducted during one year in 2014 on agricultural lands of Varamin region (Varamin, Pishva, Pakdasht), which is the hub of vegetable production. Results and discussion: The maximum concentration of Lead measured in leafy vegetables was 3. 8 mg/kg in mint and minimum was 1 mg/kg in coriander with mean of 2. 0 mg/kg. The average Lead concentration was 900% higher than the maximum permissible limit for leafy vegetables, which was 0. 2 mg/kg (National Iranian Standards Organization, 2013). The maximum total Pb measured in the soil was 21 mg/kg and at least 3. 1 mg/kg with a mean of 10. 7 mg/kg. The maximum level of Cadmium measured in leafy vegetables was 0. 16 mg/kg in lettuce and its minimum was 0. 03 mg/kg in coriander with mean of 0. 07 mg/kg. The mean concentration of Cadmium was nott higher than the maximum permissible limit for leafy vegetables (0. 1 mg/kg) according to the national standard. In 43% of the studied farms, the Cadmium content exceeded the national standard limit. Conclusions: The results showed that the risk index for all pollutants was less than one. The results showed that leafy vegetables consumers with 40 grams of leafy vegetables daily do not face significant non-cancer risks. Among leafy vegetables, lettuce had the highest nitrate risk index with 0. 37 and the highest Cadmium risk index with 0. 08. Also, the highest Lead risk index with 0. 5 index was related to mint. Parsley also had the highest risk index of nickel with a risk index of 0. 18.

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APA: Copy

SEILSEPOUR, MOHSEN. (2020). Study of heavy metal pollutant concentration in soil and edible leafy vegetables and risk assessment of its consumption with hazard quotient index. HORTICULTURAL PLANT NUTRITION, 3(2 ), 145-158. SID. https://sid.ir/paper/399514/en

Vancouver: Copy

SEILSEPOUR MOHSEN. Study of heavy metal pollutant concentration in soil and edible leafy vegetables and risk assessment of its consumption with hazard quotient index. HORTICULTURAL PLANT NUTRITION[Internet]. 2020;3(2 ):145-158. Available from: https://sid.ir/paper/399514/en

IEEE: Copy

MOHSEN SEILSEPOUR, “Study of heavy metal pollutant concentration in soil and edible leafy vegetables and risk assessment of its consumption with hazard quotient index,” HORTICULTURAL PLANT NUTRITION, vol. 3, no. 2 , pp. 145–158, 2020, [Online]. Available: https://sid.ir/paper/399514/en

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