Effect of soil contamination with heavy metals on soybean seed oil quality

Field and greenhouse experiments were conducted in 1995 and 1996 to determine soybean injury and weed control differences from imazamox and imazethapyr applied postemergence with a nonionic surfactant or methylated seed oil and with selected tank mixtures. Soybean injury from imazamox at 35 g ai ha−1plus either a methylated seed oil or nonionic surfactant was equal to injury from imazethapyr at 70 g ai ha−1in the greenhouse and field. Imazamox provided greater common lambsquarters control than imazethapyr in the field in 1995 and in the greenhouse. Thifensulfuron tank mixed with imazethapyr increased common lambsquarters control, while soybean response increased when thifensulfuron was tank mixed with imazamox. Common ragweed dry weight was reduced 61 to 64% from 35 g ha−1imazamox and 70 g ha−1imazethapyr in the field; however, imazamox provided greater common ragweed control than imazethapyr in the greenhouse. Tank mixtures of lactofen with imazamox or imazethapyr increased common ragweed control and resulted in greater soybean seed yield in 1996 than when imazamox and imazethapyr were applied alone; however, lactofen antagonized giant foxtail control with imazamox and imazethapyr, and antagonized common lambsquarters control with imazamox. Giant foxtail control in the greenhouse was antagonized more when acifluorfen, fomesafen, and lactofen were tank mixed with 35 g ha−1imazethapyr than with 35 g ha−1imazamox. Giant foxtail control with imazamox or imazethapyr applied alone or with diphenyl ether herbicides increased when 28% urea ammonium nitrate was added with nonionic surfactant compared with nonionic surfactant only. Imazethapyr antagonized giant foxtail control by clethodim in the field and was more antagonistic than imazamox in the greenhouse. A methylated seed oil improved common ragweed control by imazethapyr at 70 g ha−1and imazamox at 18 and 35 g ha−1, while common lambsquarters and velvetleaf control increased when a methylated seed oil was included with 18 g ha−1imazethapyr compared to nonionic surfactant in the greenhouse.

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Features of the accumulation of heavy metals by different genotypes of spring wheat under conditions of soil contamination with copper and lead

Vestnik KazNRTU ◽

10.51301/vest.su.2021.v143.i1.15 ◽

2021 ◽

Vol 143 (1) ◽

pp. 110-119

Author(s):

R.A. Alybaeva ◽

◽

N.Sh. Akhambayeva ◽

Z.A. Inelova ◽

S.D. Atabayeva ◽

...

Keyword(s):

Heavy Metals ◽

Soil Contamination ◽

Spring Wheat

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Physicochemical Properties and Antioxidant Activity of the Seeds Oil of Two Cucurbita Species From Bejaia (Algeria): Comparative Study

Phytothérapie ◽

10.3166/phyto-2021-0280 ◽

2021 ◽

Author(s):

S. Mindjou ◽

F. Brahmi ◽

W. Belkhiri ◽

N. Adjeroud ◽

L. Benali ◽

...

Keyword(s):

Physicochemical Parameters ◽

Cucurbita Pepo ◽

Seed Oil ◽

Oil Quality ◽

Waste Product ◽

International Standards ◽

Cucurbita Moschata ◽

Phenolic Contents ◽

Methanolic Extracts

Cucurbita species are delicious, nutritious, and delightful products. Cucurbita seeds remain in large quantities as a waste product that could be valorized since they are excellent sources of oil. The aim of this study was to compare the seed oil of two Cucurbita species (Cucurbita pepo and Cucurbita moschata) harvested in Bejaia (Algeria). The oil quality was evaluated by the determination of some physicochemical parameters, and the content of phenolic compounds. The antiradical capacity of the antioxidants present in the oils was also assessed using two methods. The oil yield was 42.85% and 40.47% from the seeds of Cucurbita pepo and Cucurbita moschata, respectively. The determined physicochemical parameters were close to those defined by the international standards. The phenolic contents of the methanolic extracts of both oils were 5.53 and 4.45 mg GAE/100 g for Cucurbita moschata and Cucurbita pepo, respectively. The best anti-DPPH power was attributed to the oil of Cucurbita moschata (44.7%), while the methanolic extract of the seed oil of Cucurbita pepo showed the highest percentage (41.02%) of the ABTS•+ radical inhibition. By this study we confirmed that the Cucurbita seeds oil are highly nutritious and offer some medicinal benefits.

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Source mapping and determining of soil contamination by heavy metals using statistical analysis, artificial neural network, and adaptive genetic algorithm

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2015.08.003 ◽

2015 ◽

Vol 3 (4) ◽

pp. 2569-2579 ◽

Cited By ~ 14

Author(s):

Ping Zhou ◽

Yao Zhao ◽

Zicheng Zhao ◽

Tianyou Chai

Keyword(s):

Neural Network ◽

Heavy Metals ◽

Genetic Algorithm ◽

Artificial Neural Network ◽

Statistical Analysis ◽

Soil Contamination ◽

Adaptive Genetic Algorithm ◽

Artificial Neural

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Plants and Soil Contamination with Heavy Metals in Agricultural Areas of Guadalupe, Zacatecas, Mexico

Environmental Contamination ◽

10.5772/31062 ◽

2012 ◽

Cited By ~ 1

Author(s):

Osiel Gonzlez ◽

Juan Miguel ◽

Esther Aurora

Keyword(s):

Heavy Metals ◽

Soil Contamination ◽

Agricultural Areas

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Review of Heavy Metals Pollution in China in Agricultural and Urban Soils

Journal of Health and Pollution ◽

10.5696/2156-9614-8.18.180607 ◽

2018 ◽

Vol 8 (18) ◽

Cited By ~ 19

Author(s):

Eshetu Shifaw

Keyword(s):

Heavy Metals ◽

Soil Contamination ◽

Health Risks ◽

Urban Soils ◽

Land Use Changes ◽

National Level ◽

Pollution Index ◽

Background Level ◽

Pollution Level ◽

Soil Toxicity

Background. The concentrations of heavy metals in soil and potential risks to the environment and public health are receiving increased attention in China. Objectives. The objective of this paper is to review and analyze heavy metals soil contamination in urban and agricultural areas and on a national scale in China. Methods. Initially, data on soil heavy metals concentration levels were gathered from previous studies and narratively analyzed. A further statistical analysis was performed using the geo-accumulation index (Igeo), Nemerow integrated pollution index (NIPI), mean, standard deviation (SD), skewness and kurtosis. Pollution levels were calculated and tabulated to illustrate overall spatial variations. In addition, pollution sources, remedial measures and impact of soil contamination as well as limitations are addressed. Results. The concentration level of heavy metals was above the natural background level in most areas of China. The problem was more prevalent in urban soils than agricultural soils. At the national level, the soil in most of the southern provinces and Beijing were heavily polluted. Even though the pollution condition based on Igeo was promising, the Nemerow integrated pollution level was the most worrisome. The soils in about 53% of the provinces were moderately to heavily polluted (NIPI>2). The effects were noticed in terms of both public and ecological health risks. The major sources were waste gas, wastewater, and hazardous residuals from factories and agricultural inputs such as pesticides. Efforts have been made to reduce the concentrations and health risks of heavy metals, including policy interventions, controlling contamination sources, reducing the phytoavailability of heavy metals, selecting and rearing of grain cultivars with low risk of contamination, paddy water and fertilizer management, land use changes, phytoremediation and engineering techniques. Conclusions. China is experiencing rapid economic and technological advancements. This increases the risk of heavy metals contamination of soil. If serious attention is not paid to this problem, soil toxicity and biological accumulation will continue to threaten the sustainability of China's development. Competing Interests. The authors declare no competing financial interests

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HYGIENIC ASSESSMENT OF THE CONTENT OF CHEMICALS IN THE SOIL OF MINING AREAS OF THE TRANS-BAIKAL REGION

Hygiene and Sanitation ◽

10.18821/0016-9900-2019-98-4-400-410 ◽

2019 ◽

Vol 98 (4) ◽

pp. 400-410 ◽

Cited By ~ 1

Author(s):

L. A. Mikhailova ◽

M. A. Solodukhina ◽

O. G. Alekseeva ◽

N. M. Burlaka ◽

S. E. Lapa

Keyword(s):

Heavy Metals ◽

Soil Contamination ◽

Chemical Elements ◽

Raw Materials ◽

Atomic Absorption Spectrophotometry ◽

Arsenic Content ◽

Toxic Substances ◽

Residential Areas ◽

Entire Area ◽

Mining Areas

Introduction. Intensive exploration and processing of mineral raw materials in the Trans-Baikal territory has caused the accumulation of considerable amount of industrial mining waste with high content of chemical elements of different classes of hazard. Currently 33 tailings storage facilities (TSF) accumulating approximately 3 milliard tons of different industrial waste are located in the territory of the region. The aim of the research is the hygienic assessment of soil contamination in the residential areas adjacent to TSFs. Material and methods. Atomic absorption spectrophotometry method was used for the determination of heavy metals. The study presents the results of analyses of 444 samples of gross content of lead, zinc, copper, mercury, arsenic, and cadmium in the soil of Khapcheranga, Sherlovaya Gora, Kadaya, Vershino-Darasunsky, and Vershino-Shakhtaminsky mining villages throughout the duration of 2012 - 2015. Results. During the period of the study the total value of soil contamination with Zc calculated by the median concentrations in Khapcheranga Village amounted to 4.7 6.9, in Vershino-Shakhtaminaky - to 6.7 8.8, which corresponds to the «allowable» level of the contamination. Zc calculation by maximum concentrations has shown the soil to be referred to the category from “moderately dangerous” to “extremely dangerous”; this value in Khapcheranga Village amounted to 48.7 - 235.3, in Vershino-Shakhtaminsky Village - to 23.76 - 164.8. Discussion. In the residential areas the allowable degree of soil contamination was determined to be predominantly observed; Khapcheranga and Vershino-Shakhtaminsky villages are the exceptions. The results of the assessment give the evidence of tge increased lead, cadmium and arsenic content throughout the entire area of the villages, while the highest levels of accumulated toxic substances are registered in the areas located near the TSF Conclusion. Thus, several zones of natural and anthropogenous contamination with increased concentrations of heavy metals and arsenic have been formed in the Trans-Baikal Territory. This dictates the need to study the influence of geochemical anomalies on the health of population.

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