Heavy Metals in Agricultural Soils of National Capital Region, Delhi: Levels and Ecological Risk

Rani, Jyoti; Agarwal, Tripti; Chaudhary, Sudesh

doi:10.12944/cwe.16.3.13

Cited by 7 publications

(5 citation statements)

References 38 publications

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“…The major contribution of Cu is agricultural practices, 53 and derived from anthropogenic activities, 54 The Cd concentration is very high in soils due to irrigation drains along with sewage. 38 similar studies stated that high concentration of Cr affected the soil microorganisms. 79&80 Arsenic levels in the present study area observed as S4-15.21 ppm> S3-14.78 ppm> S8-13.27ppm are higher levels and the S6< S1< S7< S2 and S5 are have the minimum levels of the Arsenic, and the mean, standard deviation levels are 3.10689 ± 11.0325.…”

Section: Soil Contamination Assessmentmentioning

confidence: 68%

Heavy Metal Analysis in Agricultural Soils in Godavari River Basin of Rajahmundry Region, East Godavari District, Andhra Pradesh, India.

Babu,

. G,

Vijaya Nirmala

2023

Curr Agri Res Jour

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There are many sectors that are using chemicals and increase their production to meet the needs of people in the world. The domestic, industrial, agriculture, medical and recent technological applications effluents consist of heavy metals that have high density than water and are raising the concerns of potential effects on the environment and also human. The soil samples are collected from Godavari river basin near Rajahmundry in East Godavari district, Andhra Pradesh, to assess the levels of Ni, Fe, Cr, Cu, Zn, Co, Pb, Cd & As to calculate soil PERI. Pearson’s correlation matrix, Contamination factor, Coefficient variations are used for evaluate contamination of pollutants & ecological risk, based on results the accumulation efficiency is very different in soils; most of the samples have high concentration. Contamination factors of heavy metals are in moderate contamination (1 ≤ 3), but the Cd shows as considerable contamination (3 ≤ 5) in Aalamuru-S5, Korumilli -S7 and Kulla-S8 soils samples. The coefficient variation was observed as (CV > 0.36) high variation in heavy metal (Cd > Cu > As > Fe > Co > Zn > Pb > Ni > Cr). Based on results the toxic concentrations are gradually increases in the soil samples due to over usage of chemical fertilizers and may be accumulated into crops, leads to ecological risk, finally agricultural soil are contaminating by heavy metals in our study area.

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Section: Soil Contamination Assessmentmentioning

confidence: 68%

Heavy Metal Analysis in Agricultural Soils in Godavari River Basin of Rajahmundry Region, East Godavari District, Andhra Pradesh, India.

Babu,

. G,

Vijaya Nirmala

2023

Curr Agri Res Jour

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“…The SOC content varies from 0.40% to 0.70% during the winter and summer seasons of both the years (2017–2018 and 2018–2019). Rani et al (2021) observed slightly alkaline soil pH (7.79 ± 0.49), and the organic carbon content 0.53 ± 0.21% in Delhi National Capital Region soil. The pH value of agricultural soils may have been raised due to excessive use of organic fertilizers and continuous crop cultivation.…”

Section: Resultsmentioning

confidence: 98%

“…The values of heavy metals analyzed were detected below the permissible limits of Indian standards given by Awasthi (2000). According to Rani et al (2021), the average concentrations of heavy metals in the agricultural soils of Delhi were determined to be in the following order: Fe > Al > Mn > Zn > Ni > Cr > Cu > Pb > Co > Cd. The alkaline pH in the current study is intended to limit the solubility of heavy metals in agricultural soil since heavy metals often exhibit high solubility at low pH (Shamim et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Heavy metals transfer in soil‐vegetable continuum and health risk assessment via consumption in the urban sprawl of Delhi, India

Kumar

Prasad

Shrivastava

et al. 2023

Journal of Food Safety

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Human health is the biggest issue with consumption of contaminated vegetables and water. This study aimed to quantify heavy metals in soil, irrigation water, and vegetables in five urban and peri‐urban area of Delhi. Under this study, vegetable crops, i.e. spinach, tomato, carrot, potato, onion and mustard were selected and soil, water and vegetable samples were analyzed for five toxic heavy metals, i.e. As, Cd, Cr, Hg, and Pb. Result showed that in irrigation water samples, Cd crossed the WHO/FAO permissible limit at Mehrauli and Najafgarh, while in all vegetable samples Cd content was detected more than permissible limit except for spinach. At all the sites, transfer factor and hazard risk index were observed higher in spinach and okra. The target hazard quotient were higher in spinach (1.184) and correlated with higher As content. Findings revealed that contaminated vegetables consumption needs to be continuously monitored to avoid adverse health impacts.

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“…Organic carbon (OC) is also a significant parameter of agricultural soil because it maintains the bio-availability of HM in soil 29 . A low concentration of OC in soil reduces the soil microbial diversity and biomass through decreasing mineralization.…”

Section: Resultsmentioning

confidence: 99%

“…This study observed that the surface soils ranged from strongly acidic to slightly acidic and sub-surface soils varied from strongly acidic to neutral. Although, Rani et al 29 found the alkaline nature of agricultural soil in Delhi, India and they mentioned that low pH has high solubility of HM in soil. Lower concentrations of pH in soil may decrease HM adsorption and increase soil mobility 70 .…”

Section: Discussionmentioning

confidence: 99%

Assessment of soil heavy metal pollution and associated ecological risk of agriculture dominated mid-channel bars in a subtropical river basin

Hoque

Islam

et al. 2023

Sci Rep

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The elevated concentrations of heavy metals in soil considerably threaten ecological and human health. To this end, the present study assesses metals pollution and its threat to ecology from the mid-channel bar’s (char) agricultural soil in the Damodar River basin, India. For this, the contamination factor (CF), enrichment factor (EF), geoaccumulation index (Igeo), pollution index, and ecological risk index (RI) were measured on 60 soil samples at 30 stations (2 from each station, i.e., surface and sub-surface) in different parts of the mid-channel bar. The CF and EF indicate that both levels of char soil have low contamination and hence portray a higher potential for future enrichment by heavy metals. Moreover, Igeo portrays that soil samples are uncontaminated to moderately contaminated. Further, pollution indices indicate that all the samples (both levels) are unpolluted with a mean of 0.062 for surface soils and 0.048 for sub-surface soils. Both levels of the char have a low potentiality for ecological risk with an average RI of 0.20 for the surface soils and 0.19 for the sub-surface soils. Moreover, Technique for order preference by similarity to ideal solution (TOPSIS) indicates that the sub-surface soils have lower pollution than the surface soils. The geostatistical modeling reveals that the simple kriging technique was estimated as the most appropriate interpolation model. The present investigation exhibits that reduced heavy metal pollution is due to the sandy nature of soils and frequent flooding. However, the limited pollution is revealed due to the intensive agricultural practices on riverine chars. Therefore, this would be helpful to regional planners, agricultural engineers, and stakeholders in a basin area.

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Heavy Metals in Agricultural Soils of National Capital Region, Delhi: Levels and Ecological Risk

Cited by 7 publications

References 38 publications

Heavy Metal Analysis in Agricultural Soils in Godavari River Basin of Rajahmundry Region, East Godavari District, Andhra Pradesh, India.

Heavy Metal Analysis in Agricultural Soils in Godavari River Basin of Rajahmundry Region, East Godavari District, Andhra Pradesh, India.

Heavy metals transfer in soil‐vegetable continuum and health risk assessment via consumption in the urban sprawl of Delhi, India

Assessment of soil heavy metal pollution and associated ecological risk of agriculture dominated mid-channel bars in a subtropical river basin

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