Temporal variations and spatial distributions of heavy metals in a wastewater-irrigated soil-eggplant system and associated influencing factors

Ai, Shiwei; Liu, Bailin; Yang, Ying; Ding, Jian; Yang, Wenzhi; Bai, Xiaojuan; Naeem, Sajid; Zhang, Yingmei

doi:10.1016/j.ecoenv.2018.02.026

Cited by 49 publications

(14 citation statements)

References 57 publications

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“…The deposition and decomposition of huge quantities of many organic wastes and sewage sludge might be responsible for the organic matter enrichment in this soil. Apart from this accumulation and subsequent decomposition of plant residues also result in building organic matter (Gairola and Soni, 2010;Ai et al, 2018). Sand/Silt/Clay Content As described in table 1 the sand/silt/clay content of the soil ranged from 53.00±4.51 (S1) to 65.33 ± 2.42 (S2), 19.33 ±1.03 (S5) to 24.84 ± 4.62 (S1) and 11.33 ± 1.03(S2) to 19.50 ± 2.50 (S5) present of sand, silt and clay respectively, these indicate that the soil contained higher composition of sand followed by silt and clay in all the sampling sites.…”

Section: Organic Matter (Om) Contentmentioning

confidence: 99%

Heavy metal analysis in the soils of in and around Robe town, Bale zone, South Eastern, Ethiopia

Tefera

Gebreyohannes

Saraswathi

2018

Eurasian Journal of Soil Science (Ejss)

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The purpose of this study was to assess physicochemical parameter and heavy metal concentration of the soil in and around Robe town, Bale zone, Ethiopia. Seven soil samples (three from dump sites and four from farm lands) were collected and analyzed through different methods for analyzing the physicochemical parameters like, pH Sand/Silt/Clay Content, MC, OM. and the heavy metals including Cr, Cd, Cu, Fe, Zn and Pb, were investigated using Flame atomic absorption spectrophotometer (FAAS). The analyzed result of all sites revealed that, high moisture content % (14.83 ± 2.57to 19.96 ± 0.72), pH slightly acidic except S2 which is slightly basic, (5.77 ± 0.08 to 7.60 ± 0.33),high organic matter % (13.83 ± 0.49 to 16.60 ± 0.90), sand % (53.00 ± 4.51 to 65.33 ± 2.42), silt % (19.33 ± 1.03 to 24.84 ± 4.62), clay % (11.33 ± 1.03 to 19.50 ± 2.50) sandy nature of soil were observed and the concentration of heavy metals such as: Cr (32.53 ± 3.51 to 41.81 ± 1.06) ppm, Cd (0.57 ± 0.21 to 0.93 ± 0.24) ppm, Cu (26.54 ± 0.68 to 37.44 ± 2.72) ppm, Zn (66.98 ± 1.09 to 170.48 ± 1.51) ppm Fe (33483.55 ± 1470.02 to 49012.18 ± 2692.20) ppm and Pb (18.04 ± 0.37 to 20.77 ± 0.46) ppm were obtained. The results showed that all of the assessed heavy metals below maximum permissible limit except Fe, which is above maximum permissible limit that recommended by Ewers, Based on the results obtained from the study the level of metals concentrations safe for agricultural activities. But different measures must be taken to minimize additional soil pollution.

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Section: Organic Matter (Om) Contentmentioning

confidence: 99%

Heavy metal analysis in the soils of in and around Robe town, Bale zone, South Eastern, Ethiopia

Tefera

Gebreyohannes

Saraswathi

2018

Eurasian Journal of Soil Science (Ejss)

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“…The toxic elements have different poisoning influence on the human body through their potential effects on the neurological system, kidney function, ossification process and various other organs [ 17 ]. Therefore, many studies have been devoted to soil contamination by toxic elements and management strategies for farmland soil [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…There is a history of more than 100 years of heavy metal pollution study, mainly focusing on the distribution, degree of contamination, as well as the origin of toxic elements [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. The following indexes are commonly used to evaluate soil conditions: Single factor pollution index ( P i ), Nemerow Pollution Index ( PN ), Geo-accumulation Index ( I geo ) and Potential Ecological Risk ( EI ).…”

Section: Introductionmentioning

confidence: 99%

“…The sources of toxic elements are complex and can be divided into artificial and natural sources [ 33 ]. The typical anthropogenic inputs of toxic elements in farmland soil are wastewater irrigation, atmospheric deposition and the use of fertilizers and pesticides containing toxic elements in agricultural activities [ 23 , 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Human Health Risk Assessment of Toxic Elements in Farmland Topsoil with Source Identification in Jilin Province, China

Zhang

Cao

et al. 2018

IJERPH

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The presence of toxic elements in agricultural soils from anthropogenic activities is a potential threat to human health through the food chain. In this study, the concentration of toxic elements in 122 agricultural topsoil composite samples were determined in order to study the current status, identify their sources and assess the level of pollution and human health risk. The results showed that the mean concentrations of Zn, Cu, Pb, Cd, Hg and As in the farmland topsoil were 21.72, 15.09, 36.08, 0.2451, 0.0378 and 4.957 mg·kg−1, respectively. The spatial distribution showed that the soils were mainly contaminated by Cd, Pb and Hg in midwest Jilin but by Cu and As in the east. According to the pollution index (Pi), Nemerow integrated pollution index (PN) and Geo-Accumulation Index (Igeo), Cd and Pb were the main pollutants in the soils. The occurrence of these elements was caused by anthropogenic activities and they were concentrated in the Songyuan-Changchun-Siping economic belt. There is limited non-carcinogenic and carcinogenic health risk to humans. Principal component analyses suggest the Pb, Cd and Hg soil contamination was mainly derived from anthropogenic activities in the Midwest, but all examined toxic elements in the east were mainly due to geogenic anomalies and came from atmospheric deposition.

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“…Cd was officially identified as a predominant metal pollutant in the agricultural soils of China [11]. Many studies have focused on the spatial distribution pattern and pollution risk of Cd in Chinese agricultural soils [6,12,13,14,15,16,17,18], but the spatio-temporal analysis using direct measurements over two sampling dates at a relatively large area remained unavailable, and only rather limited county-scale studies were reported, e.g., Li et al [19].…”

Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Change and Pollution Risk of Agricultural Soil Cadmium in a Rapidly Industrializing Area in the Yangtze Delta Region of China

Qian

Xie

et al. 2018

IJERPH

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The impacts of rapid industrialization on agricultural soil cadmium (Cd) accumulation and their potential risks have drawn major attention from the scientific community and decision-makers, due to the high toxicity of Cd to animals and humans. A total of 812 topsoil samples (0–20 cm) was collected from the southern parts of Jiangsu Province, China, in 2000 and 2015, respectively. Geostatistical ordinary kriging and conditional sequential Gaussian simulation were used to quantify the changes in spatial distributions and the potential risk of Cd pollution between the two sampling dates. Results showed that across the study area, the mean Cd concentrations increased from 0.110 mg/kg in 2000 to 0.196 mg/kg in 2015, representing an annual average increase of 5.73 μg/kg. Given a confidence level of 95%, areas with significantly-increased Cd covered approximately 12% of the study area. Areas with a potential risk of Cd pollution in 2000 only covered 0.009% of the study area, while this figure increased to 0.75% in 2015. In addition, the locally concentrating trend of soil Cd pollution risk was evident after 15 years. Although multiple factors contributed to this elevated Cd pollution risk, the primary reason can be attributed to the enhanced atmospheric deposition and industrial waste discharge resulting from rapid industrialization, and the quick increase of traffic and transportation associated with rapid urbanization.

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Temporal variations and spatial distributions of heavy metals in a wastewater-irrigated soil-eggplant system and associated influencing factors

Cited by 49 publications

References 57 publications

Heavy metal analysis in the soils of in and around Robe town, Bale zone, South Eastern, Ethiopia

Heavy metal analysis in the soils of in and around Robe town, Bale zone, South Eastern, Ethiopia

Human Health Risk Assessment of Toxic Elements in Farmland Topsoil with Source Identification in Jilin Province, China

Spatio-Temporal Change and Pollution Risk of Agricultural Soil Cadmium in a Rapidly Industrializing Area in the Yangtze Delta Region of China

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