scholarly journals Heavy Metal Contamination in Soil: Sources, Accumulation in Vegetables and Remedial Measures: A Review

Agropedology ◽  
2019 ◽  
Vol 30 (2) ◽  
Author(s):  
Sandeep Kumar ◽  
◽  
Lal Chand Malav ◽  
Shiv Prasad ◽  
Sunita Yadav ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Toxic Metals ◽  
Urban Areas ◽  
Metal Contamination ◽  
Industrial Development ◽  
Heavy Metal Contamination ◽  
Biological Activities ◽  
Vegetable Production ◽  
Human Beings ◽  
Negative Effects

Presently, rapid industrialization and mechanization create a lot of heavy metal pollution around the globe. Both anthropogenic and natural sources are responsible for the discharge of heavy metal in the environment. Anyhow, these toxic metals reach into soil, water bodies, plants and finally to human beings through the food chain. These toxic metals create several problems in plants and living beings after intake from the soil and get accumulated in their body. Heavy metals also exhibit toxic effects on soil biological activities by affecting key microbial processes and also hamper the activities of soil microbes. Recently, due to industrial development in urban areas, heavy metal contamination has become a serious threat to peri-urban agriculture prevalent for vegetable production. There has long been a need for decontamination of these agricultural resources and prevention from the further contamination to avert the negative effects on living beings. In this article, an attempt has been made to provide an extensive understanding about different sources of heavy metal, such as zinc (Zn), copper (Cu), lead (Pb) and cadmium (Cd) etc., in agro-ecosystem and their possible risks to soil and plants. An effort has been also made to present in brief information on remediation techniques specially phytoremediation through this review.

scholarly journals Phytoremediation of Heavy Metals Extracted from Soil and Aquatic Environments: Current Advances as well as Emerging Trends

2021 ◽  
Vol 12 (4) ◽  
pp. 5486-5509
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Contamination ◽  
Industrial Development ◽  
Heavy Metal Contamination ◽  
Cost Effective ◽  
Aquatic Environments ◽  
Farming Practices ◽  
Emerging Trends ◽  
Soil And Water

Quick industrial development, current farming practices, and other anthropogenic events enhance an important number of poisonous heavy metals in the atmosphere, which persuades severe poisonous effect on all the forms of living beings, which change the properties. This type of heavy metal pollution has ecological dangers as well as affects human health. Heavy metal contamination is mutagenic, endocrine, carcinogenic, and teratogenic, which causes nervous health problems mostly in kids. Further, an appropriate method for the remediation of adulteration of water along with soil is phytoremediation. In addition, it has been progressively utilized. Phytoremediation helps to improve the contaminated soil and water by the extraction of contaminating heavy metals, which is called phytoextraction and their phytostabilisation. Phytoremediation is based on many processes, and it is very eco-friendly, cost-effective, and economical. In this review, we aim to explain the detailed study of phytoremediation and current approaches.

scholarly journals Heavy Metals and Safety of Fresh Fruits in Bangalore City, India - A Case Study

1970 ◽  
Vol 4 (1) ◽  
pp. 17-27 ◽  
Author(s):  
Seyed Esmael Mahdavian ◽  
RK Somashekar
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Food Safety ◽  
Urban Areas ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Food Adulteration ◽  
Safety Standards ◽  
Sanitary Conditions ◽  
Food Safety Standards

Urban food security in India is a matter of growing concern. It is estimated that by 2005, 60% of India's population will be living in urban areas. The presence of heavy metals in human body always draws scientific concern as these are considered responsible for affecting health, especially in these days where the release of toxic wastes in the environment has been increased. The increasing trends in food contamination in urban areas are largely attributed to the polluted environment in urban agriculture, contaminated food transport and supply chains; poor market sanitary conditions, and the use of contaminated or waste water for irrigation purposes. The objectives of this paper to measure the levels of heavy metal contamination of fruits in Bangalore markets and assess how the heavy metal contamination might have impacted food safety standards vis a vis heavy metals on urban consumers. The results show that urban consumers are at greater risk of purchasing fresh fruits with high levels of heavy metals beyond the legally permissible limits as defined by the Indian Prevention of Food Adulteration Act, 1954. It must be noted here that these norms are less strict than international food safety norms like Codex Alimentarius or European Union standards. It is therefore suggested here that care should be taken in the following: reduce pollution at water source points; improve post harvest handling; enhance better coordination in fresh crops trading system to improve food safety standards; improve sanitary conditions for the city food markets; and increase awareness in consumers and policy makers on the dangers of heavy metal contamination in the food intake. Keywords: Heavy metals; Prevention of Food Adulteration Act; Atomic Absorption Spectrophotometer (AAS) DOI: 10.3126/kuset.v4i1.2880 Kathmandu University Journal of Science, Engineering and Technology Vol.4, No.1, September 2008, pp 17-27

scholarly journals Comparative analysis of heavy metal contamination in some common tubers and vegetables of Kerala

2019 ◽  
Author(s):  
Silvy Mathew ◽  
P. T. Teenamol
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Comparative Analysis ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Leafy Vegetables ◽  
Cadmium Content ◽  
Human Beings ◽  
Potential Health ◽  
Potential Health Risk

Leafy vegetables and tubers contaminated by heavy metals will cause potential health risk to human beings. An analysis was carried out to study the heavy metal contamination in tubers and leafy vegetables at Kottayam district, Kerala. The results indicated that higher levels of lead were recorded in all of the samples analyzed when compared to the WHO permissible limits (0.1 mg/kg) for tubers and leafy vegetables, except in Colocasia esculenta (L.) Schott., collected from Erattupetta market. Cadmium content was higher in both the tubers and leafy vegetables collected from Changanacherry market. Therefore, regular assessment of the accumulation of heavy metals in leafy vegetables and tubers is the need of the era.

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