scholarly journals The Levels, Sources, and Spatial Distribution of Heavy Metals in Soils from the Drinking Water Sources of Beijing, China

2021 ◽  
Vol 13 (7) ◽  
pp. 3719
Author(s):  
Jing Wei ◽  
Xiaogang Zheng ◽  
Jintong Liu ◽  
Guowei Zhang ◽  
Yanxi Zhang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Drinking Water ◽  
Spatial Distribution ◽  
Agricultural Land ◽  
Heavy Metal Contamination ◽  
Soil Samples ◽  
Drinking Water Source ◽  
Quartz Syenite ◽  
Beijing China

Our study area is the upstream watershed of the Guanting and Miyun Reservoirs; together, these two reservoirs comprise the main drinking water source of Beijing, China. In order to prevent crop contamination and preserve the quality of the water and soil, it is important to investigate the spatial distribution and the sources of the heavy metals in farmland soils on the watershed scale. For this study, we collected 23,851 farmland surface soil samples. Based on our analysis of the concentrations of eight heavy metals in these samples, we found that the overall soil quality in our study area is excellent, but that the Cd, Cu, Zn, and Cr contamination risks are relatively high. Moreover, a percentage of samples exceeded the Cd (1.54%,), Cu (0.28%), Zn (0.25%), Cr (0.13%), Pb (0.09%), As (0.05%), Ni (0.04%), and Hg (0.02%) risk screening values for soil contamination in agricultural land. In addition to determining the spatial distribution characteristics of the heavy metal concentrations of the soil samples, we also conducted a factor analysis and an R cluster analysis (CA) whcih can gathered the similar variables to track the sources of the heavy metals. We found that the Cd, Pb, and Zn are likely sourced from a quartz syenite porphyry body and from coal-fired enterprises, while the Cr, Cu, and Ni contaminations are mainly caused by runoff from iron ore smelting. Additionally, agricultural production contributes to the local accumulation of Cu, and industrial (smelting) discharge is partially responsible for the As contamination. As a result of the atmospheric deposition of pollutants, areas with high Hg concentrations are generally centered on large- and medium-sized cities. Due to these high natural heavy metal background values, the existing and future heavy metal contamination in the watershed poses a serious ecological risk to both the soil and the surface water.

scholarly journals Arc GIS based Interpretation of Heavy Metals in Soil Samples near Coastal Areas of Badin, Sindh, Pakistan

2021 ◽  
Vol 11 (4) ◽  
pp. 1-5
Author(s):  
Muhammad Murtaza Qureshi ◽  
Mohammad Amin Qureshi ◽  
Muhammad Saeed Qureshi ◽  
Afzal Shah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Coastal Area ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Saline Water ◽  
Coastal Areas ◽  
Soil Samples ◽  
Spatial Mapping ◽  
Arc Gis

This study was aimed to assess the severity of heavy metal contamination in eastern coastal area of Pakistan. Agriculture lands near district Badin coastal area found contaminated due to mega surface canal drain network, carrying untreated industrial and municipal effluents along with pumped saline water. Thirty-two random soil samples were collected from different coastal areas. Arc Geographic Information System was used for spatial mapping. Soil samples from coastal areas of Badin contain average concentrations of heavy metals (mg/kg) as Hg 0.247±0.207, Ni 2.622±1.107,Zn 3.121±0.929, Cu 0.059±0.066, Fe 70.447±1.163, Mn7.062±1.251, Co 0.0167±0.033,Cr0.799±0.718.

scholarly journals Status of soil heavy metals contamination using contamination indices in shallot fields

2021 ◽  
Vol 306 ◽  
pp. 04013
Author(s):  
Triyani Dewi ◽  
Edhi Martono ◽  
Eko Hanudin ◽  
Rika Harini
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Contamination Factor ◽  
Soil Samples ◽  
Limit Values ◽  
Central Java ◽  
Contamination Indices ◽  
Heavy Metals Contamination ◽  
The Status

Monitoring and assessment of heavy metal concentrations in shallot fields are needed to evaluate the potential risk of contamination due to heavy metals. This study aims to define the status of heavy metal contamination in shallot fields using contamination indices. A total of 184 soil samples (0-20 cm) were taken from shallot fields in Brebes Regency, Central Java. The soil samples were analyzed for the concentration of five heavy metals (Cd, Pb, Ni, Cr, and Co) with HNO3 and HClO4 extracts and measured using AAS. Assessment of the status of heavy metals contamination in the soil using contaminant factor (CF), geo-accumulation index (I-geo), and pollution load index (PLI). The mean concentration in shallot fields showed the following order Cr > Ni > Pb > Co > Cd and the concentration were still below critical limit values. Four metals are Pb, Cr, Co, and Ni are low contamination (CF<1), while Cd is considerable until very high contamination factor. Based on I-geo values, shallot fields are practically uncontaminated of Pb, Co, Ni, and Cr (I-geo<1), meanwhile the status of Cd is uncontaminated to moderately contaminated (0<I-geo<1). Generally, the shallot fields in Brebes Regency, Central Java is unpolluted with five metals (PLI<1).

scholarly journals Evaluation of redevelopment priority of abandoned industrial and mining land based on heavy metal pollution

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0255509
Author(s):  
Xing Gao ◽  
Junping Tian ◽  
Zheng Huo ◽  
Yanbin Wu ◽  
Chenxi Li
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Metal Contamination ◽  
Agricultural Land ◽  
Heavy Metal Contamination ◽  
Northern China ◽  
Construction Land ◽  
Priority Assessment

Heavy metal contamination in soil is an important factor affecting the determination of safe redevelopment methods for industrial and mining land. In this paper, the soil environment of a typical mining city in northern China was taken as the research object, 148 surface soil samples were collected and the contents of heavy metals were measured. The health risk classification criteria for heavy metal contamination of soils and the method of priority assessment for redevelopment were used. The results showed that: the risk of potential utilization types of heavy metals in the abandoned industrial and mining land is different. When the utilization type is agricultural land, the soil environmental quality is good as a whole, and a small number of plots are polluted by cadmium (Cd)and mercury (Hg); When the land use type is construction land, the risk of heavy metal pollution comes from chromium (Cr); The priority of development in this study area is as follows: agricultural land > construction land > ecological land.

scholarly journals Communities of oribatid mites and heavy metal accumulation in oribatid species in agricultural soils in Egypt impacted by waste water

2010 ◽  
Vol 46 (No. 4) ◽  
pp. 159-170 ◽  
Author(s):  
H.M. El-Sharabasy ◽  
A. Ibrahim
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Agricultural Land ◽  
Heavy Metal Contamination ◽  
Agricultural Soils ◽  
Diversity Index ◽  
Heavy Metal Accumulation ◽  
Oribatid Mites ◽  
The Body

The continued use of waste water for irrigation of agricultural fields in Egypt may lead to accumulation of heavy metals in soils and adverse effects on soil-living communities. We investigated responses of oribatid communities to heavy metal contamination in mango plantations irrigated by the Ismailia canal in the Suez region. Mean concentrations of heavy metals determined in irrigation water were considerably above the recommended levels. Concentrations of metals in agricultural soil were however below the permissible levels. A comparison with concentrations of a typical uncontaminated soil in this area revealed that the Ismailia water canal used for irrigation of agricultural land has elevated levels of heavy metals. The results of our ecological survey showed that the abundance and structure of the soil oribatid communities were not influenced by levels of heavy metals in the soil. We also showed that the diversity index can be a valuable tool for assessing the possible impact of pollutants on different species of oribatid mites. The oribatid species appeared to be accumulating different amounts of heavy metals when characterised by their bioconcentration factors. Most species were poor zinc accumulators. The accumulation of heavy metals in the body of oribatids was not strictly determined by their body size or by the trophic level. In conclusion, our study showed that mango plantations impacted by waste water from the Ismailia canal are accumulating heavy metals in their soils above the background concentrations, but ecological effects on soil-living communities are not apparent yet.

Profiling of essential mineral content, heavy metals, and bacterial contaminants in conventional and organic eggs available in the hypermarkets of the Eastern Province of Saudi Arabia

2021 ◽  
Vol 12 ◽  
Author(s):  
Saad Dahlawi ◽  
Mahmoud Berekaa ◽  
Khaled Salama ◽  
Ossama Labib ◽  
Saifullah ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Drinking Water ◽  
Saudi Arabia ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Plate Count ◽  
Eastern Province ◽  
Fecal Matter ◽  
Bacterial Contaminants

Background: Eggs are commonly regarded as one of the best sources of various macro, and micronutrients, in particular, high biological value (BV) proteins, and both saturated, and unsaturated fatty acids. Apart from proteins, eggs are excellent sources of various high health value lipid components, carotenoids, minerals, and both water and lipid-soluble vitamins. However, the nutrient-rich nature of this ‘superfood’ also makes them susceptible to microbial contamination from various sources, such as fecal matter, drinking water for layer chicken, and the surrounding environment. Moreover, drinking water and chicken feed are also sources of heavy metal contamination. The presence of both factors poses serious health concerns for consumers. Objective: The main aim of this research was to proximate heavy metals and bacterial contaminants in nine different brands of brown organic and white conventional eggs available in the hypermarkets of the Eastern Province of Saudi Arabia. Methods: An Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES), was used to determine the concentration of metals with high sensitivity. Standard plate count eas followed by enrichment of bacterial contaminants in a double-strength nutrient broth medium for microbiological assessment. Results: The results indicated that Pb, Cd, Al, and As were present in high concentrations in all egg brands of both types (organic and conventional). The estimated daily intake (EDI) values for Ca, Fe, Mn, and Mg were within the range of WHO-recommended thresholds, and that these essential minerals were present in adequate amounts in all egg brands. The two major groups predominating the microbial loads were the family Enterobacteriaceae and Pseudomonas sp. Conclusion: The presence of heavy metals, such as Al, As, Pb, and Cd, in nearly all the brands, amounts that exceeded the established ADI and EDI thresholds were a considerable concern. In particular, the elevated levels of Cd and Pb, group 1 and group 2A probable human carcinogens respectively, demands that local regulatory authorities investigate the sources of heavy metal contamination, and alleviate this considerable risk to human health. Furthermore, this study could be a benchmark for establishing food safety and hygiene standards for local egg production, storage, handling, and transport in Saudi Arabia.

Spatial distribution of heavy metals in the West Dongting Lake floodplain, China

2020 ◽  
Vol 22 (5) ◽  
pp. 1256-1265 ◽  
Author(s):  
Dong Peng ◽  
Ziyu Liu ◽  
Xinyue Su ◽  
Yaqian Xiao ◽  
Yuechen Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Dongting Lake ◽  
Migration Route ◽  
The West ◽  
Rare And Endangered ◽  
And Migration

The protection of Dongting Lake is important because it is an overwintering and migration route for many rare and endangered birds of East Asia and Australasia, but an assessment of heavy metal contamination in West Dongting Lake is lacking.

scholarly journals Risk Assessment of Heavy Metal in the Surface Sediment at the Drinking Water Source of the Xiangjiang River in South China

2020 ◽  
Author(s):  
Zhifeng Huang ◽  
Chengyou Liu ◽  
Xingru Zhao ◽  
Jing Dong ◽  
Binghui Zheng
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Drinking Water ◽  
Ecological Risk ◽  
Surface Sediment ◽  
Anthropogenic Activities ◽  
Organic Matter Content ◽  
Hunan Province ◽  
Drinking Water Source ◽  
Xiangjiang River

Abstract Background: The Xiangjiang River is an important drinking water resource for the Hunan province of China. It is crucial to ascertain the pollution status, influencing factors, ecological risks, and possible sources of heavy metals in the sediments of the Xiangjiang River. Sediment is both a source and a sink of heavy metals in aquatic ecosystems. In this study, surface sediment was collected from the Zhuzhou Reach of the Xiangjiang River and eight heavy metals were investigated. Results: In all sediment samples, all eight heavy metals were detected and their average concentration fell in the order of Zn > Pb > As > Cu > Cr > Ni > Cd > Co. Assessment shows extremely serious Cd pollution and a very high potential ecological risk from Cd. According to correlation analysis and principle component analysis (PCA), As, Cu, Ni, Pb, and Zn originate from industrial wastewater and mineral smelting activities, whereas Co, Cr, and Ni come from natural sources. Redundancy analysis (RDA) reveals that the organic matter content and the particle size of the sediment have some influence on the enrichment of heavy metals. Conclusion: Among all eight examined heavy metals in the surveyed area, the content of Zn, Pb, and As is the highest, and that of Cd and Co is the lowest. Despite a low level of absolute content, the Cd in sediment already renders a high ecological risk and thus calls for urgent attention. Anthropogenic activities are the main source of heavy metals in the sediment. The distribution of heavy metals is also influenced by sediment properties. The results provide guidance for controlling heavy metal pollution and protecting drinking water sources in the Xiangjiang River.

scholarly journals Monitoring of heavy metal contamination of soil and plants (for example, Potentilla tanacetifolia Willd. ex Schlecht.) of natural ecosystems in Chita urban areas

2018 ◽  
Vol 7 (1) ◽  
pp. 110-115
Author(s):  
Galina Yurievna Samoilenko ◽  
Evgeniy Aleksandrovich Bondarevich ◽  
Natalia Nikolaevna Kotsyurzhinskaya ◽  
Igor Anatolyevich Boriskin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Urban Areas ◽  
Heavy Metal Contamination ◽  
Soil Samples ◽  
Natural Ecosystems ◽  
High Concentration ◽  
Mobile Forms ◽  
Zinc Cadmium ◽  
Cadmium Lead

The paper presents data on the content of gross and mobile forms of zinc, cadmium, lead and copper in the soils of Chita and its surroundings. The paper contains a comparative analysis of the accumulation (Kn) and movement (KP) coefficients of these microelements in organs ( Potentilla tanacetifolia Willd. ex Schlecht.), relative to their gross content and mobile forms in soils. The authors have revealed that soil samples of the studied sites contain unequal gross amount of heavy metals. In some points (6 and 3) the content of cadmium and zinc exceeded the Mac, that is why such soils have been attributed to heavily polluted. The index of biological activity on mobile forms of heavy metals in all sites significantly exceeded the same index on gross forms. It was found that Potentilla tanacetifolia are accumulators of heavy metal ions. Aboveground bodies accumulate and absorb cadmium and copper especially intensively, thus the content of mobile forms of these metals in the soil is insignificant. Excessive adsorption of trace elements in the phytomass of plants can be connected with surface contamination. According to the content of zinc and lead, the accumulation values in the organs of P. tanacetifolia were characterized by small coefficient values, against the background of their high concentration in the soil.

scholarly journals Trace Analysis of Heavy Metals in Ground Water and Soil near Coal Based Thermal Power Plant Udupi Karnataka

2021 ◽  
Vol 23 (2) ◽  
Author(s):  
Nausha Shetty ◽  
◽  
Jyothi K Shetty ◽  
Dr Mohandas Chadaga ◽  
Dr Udaya Shankara H N ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Power Plant ◽  
Ground Water ◽  
Thermal Power Plant ◽  
Heavy Metal Contamination ◽  
Thermal Power ◽  
Soil Samples ◽  
Preliminary Treatment ◽  
Post Monsoon

The study involves evaluation of quality of groundwater and soil near the Thermal power plant located in Udupi District, Karnataka, India based on seasonal variation. 24 samples of ground water and soil were collected during Pre-Monsoon, Post- Monsoon and Monsoon Seasons from the places which are surrounding the Thermal Power plant. Collected Ground water samples were tested for detection of various heavy metal concentrations such as Ni, Fe, Mn, Cr, and Pb and soil samples were detected for Ni, Fe, Mn, Cr, Pb, Cd and Co. Collected soil samples were sieved according to different Standard sieve size. After sieving, soil samples were digested using tri-acids (Nitric Acid, Hydrogen peroxide and Concentrated Hydrochloric acid). Both Ground water and Soil samples were analysed for heavy metal contamination by using Atomic Absorptive Spectrometry. From the results obtained for Pre-Monsoon, Post-Monsoon and Monsoon Season it showed that concentration of heavy metals in the samples were exceeding the permissible limit prescribed by WHO and BIS. Hence preliminary treatment should be done before discharging in to Ash ponds.

scholarly journals INVESTIGATION OF HEAVY METAL CONTAMINATION IN THE ROADSIDE SOIL AT MORENA DISTRICT IN INDIA

2016 ◽  
Vol 4 (11) ◽  
pp. 72-76
Author(s):  
Laxmi Kant Sharma
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Surface Soil ◽  
Soil Samples ◽  
Roadside Soil ◽  
Degree Of Contamination ◽  
Vehicular Pollution ◽  
Definite Indicator ◽  
High Degree

Pollution of natural environment due to release of heavy metals from various sources is a widespread problem throughout the world. This study explains the effect of heavy metal contaminants in Roadside soil of Morena district. Twelve air dried surface soil samples were collected from 50cm – 1m (point A) and twelve from 30m (point B) away from the roadside along a road with a distance of 50 km. Heavy metals were found in both points with highest concentration at 50cm – 1m (point A). Roadside soil is a definite indicator of vehicular pollution from where the high degree of contamination, is expected. The presence of heavy metals like Cu, Cr, Fe, Pb, Zn and Mn in the roadside soil was also considerable.

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