scholarly journals Research NoteEffect of drought and fires on the quality of water in Lithuanian rivers

2003 ◽  
Vol 7 (3) ◽  
pp. 423-427 ◽  
Author(s):  
G. Sakalauskiene ◽  
G. Ignatavicius
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Peat Bog ◽  
Sudden Increase ◽  
Quality Of Water ◽  
Lead And Zinc ◽  
Lithuanian Rivers ◽  
River Bottom ◽  
Copper Lead

Abstract. In August and September 2002, concentrations of heavy metals (copper, lead, and zinc) were 21-74% more than in previous years in Lithuanian rivers. Such a sudden increase in heavy metal pollution reduces the value of any water body for fishing or recreation and poses a potential risk to the environment and to human health. Droughts in the summer of 2002 led to forest and peat bog fires all over Lithuania and may have caused the increase in concentrations of heavy metals detected in Lithuanian rivers in August 2002. The fires could have changed the pH in the top layers of the soil, overcome geochemical barriers in the soil and enabled heavy metals to migrate from the soil to the groundwater and from river bottom sediments to the surface water. Keywords: heavy metals, river water quality, Lithuania

scholarly journals Heavy Metal Bioaccumulation in Rice from a High Geological Background Area in Guizhou Province, China

2018 ◽  
Vol 15 (10) ◽  
pp. 2281 ◽  
Author(s):  
Xiangyu Kong ◽  
Ting Liu ◽  
Ziheng Yu ◽  
Zhe Chen ◽  
Da Lei ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Paddy Soil ◽  
Quality Standard ◽  
Guizhou Province ◽  
Lead And Zinc ◽  
Standard Value ◽  
Geological Background ◽  
Copper Lead ◽  
Background Area

Long-term exposure to high levels of heavy metals can lead to a variety of diseases. In recent years, researchers have paid more attention to mining and smelting areas, industrial areas, and so forth, but they have neglected to report on high geological background areas where heavy metal levels are higher than China’s soil environmental quality standard (GB 15618-2018). In our study, an investigation of heavy metals in paddy soil and rice in the high background area of Guizhou Province was carried out, and the factors affecting the absorption and utilization of heavy metals in rice were discussed. A total of 52 paddy soil and rice samples throughout the high geological background of Guizhou, China, were collected, and concentration(s) of arsenic, cadmium, copper, lead, and zinc were analyzed. The arithmetic mean values of paddy soil heavy metals were 19.7 ± 17.1, 0.577 ± 0.690, 40.5 ± 32.8, 35.5 ± 32.0, and 135 ± 128 mg kg−1 for arsenic, cadmium, copper, lead, and zinc, respectively. Most of the heavy metals’ contents in the soil were above the soil standard value. The highest content of cadmium was 15.5 times that of the soil standard value. The concentration(s) of arsenic, cadmium, copper, lead, and zinc in rice were 0.09 ± 0.03, 0.01 ± 0.01, 1.57 ± 0.69, 0.002 ± 0.003, and 11.56 ± 2.61 mg kg−1, respectively, which are all lower than those specified by Chinese food safety standards (GB 2762-2017). The results and discussion show that the bioavailability, pH, and soil organic matter are important factors that affect the absorption of heavy metals by rice. According to the consumption of rice in Guizhou Province, the risk of eating rice was considered. The results revealed that the hazard quotient is ranked in the order of copper > zinc > cadmium > arsenic > lead, and there is little risk of eating rice in the high geological background area of Guizhou Province. These findings provide impetus for the revision and improvement of this Chinese soil environmental quality standard.

Alleviation of heavy metal stress by arbuscular mycorrhizal symbiosis in Glycine max (L.) grown in copper, lead and zinc contaminated soils

Rhizosphere ◽  
2021 ◽  
Vol 18 ◽  
pp. 100325
Author(s):  
Nurudeen Olatunbosun Adeyemi ◽  
Mufutau Olaoye Atayese ◽  
Olalekan Suleiman Sakariyawo ◽  
Jamiu Oladipupo Azeez ◽  
Soremi Paul Abayomi Sobowale ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Glycine Max ◽  
Contaminated Soils ◽  
Arbuscular Mycorrhizal ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Mycorrhizal Symbiosis ◽  
Lead And Zinc ◽  
Glycine Max L ◽  
Copper Lead

Distribution of heavy metals in seawater, sediment and biota of Jinhae Bay, Korea

1994 ◽  
Vol 30 (10) ◽  
pp. 173-177 ◽  
Author(s):  
Lee Chan-Won ◽  
Kwon Young-Tack
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Coastal Waters ◽  
Heavy Metal Contamination ◽  
Heavy Metal Concentration ◽  
Industrial Wastes ◽  
Subsequent Increase ◽  
Zinc Cadmium ◽  
Jinhae Bay ◽  
Copper Lead

Over the past two decades, the coastal waters of Jinhae Bay have been extensively used by coastal communities and industries for the disposal of domestic and various industrial wastes, therefore increasing the level of pollutants in coastal waters with a subsequent increase in sediments, especially of heavy metals. Specific objectives of this research are to investigate the distribution of heavy metal concentration in biota, to compare the concentrations with those in sediment and water and to relate the bioconcentration to the different heavy metals in biota obtained from several sites. Sixty one percent of heavy metals was found in particulate form during the high runoff season and 32% during the dry season. The behavior of the particulate metals after flowing in to the enclosed coastal sea is an important factor in heavy metal contamination. Copper, lead and chromium contamination of sediment was revealed at several sites. The bioconcentration factors (BCFs) of zinc, cadmium, copper, nickel, chromium and lead by the mussel (Mytilus edulis) were determined as 2,900, 2,814, 807, 423, 228 and 127 in the decreasing order, respectively. The areas located nearest to highly populated city and industries exhibited mussels with the largest accumulation of copper, lead and chromium.

Heavy metal pollution and macrobenthic assemblages in soft sediments in two Sydney estuaries, Australia

1998 ◽  
Vol 49 (6) ◽  
pp. 533 ◽  
Author(s):  
Jonathan S. Stark
Keyword(s):  
Heavy Metals ◽  
Environmental Variables ◽  
Spatial Scales ◽  
Organic Matter Content ◽  
Matter Content ◽  
Soft Sediments ◽  
Lead And Zinc ◽  
Macrobenthic Assemblages ◽  
Order Of Magnitude ◽  
Copper Lead

The influence of heavy metals (copper, lead and zinc) associated with urban runoff, on assemblages of macrofauna in intertidal soft sediments was studied in two estuaries in the Sydney region. The patterns of distribution and abundance of fauna and assemblages was found to vary significantly at several spatial scales: within bays in an estuary, between bays within an estuary and between bays from different estuaries. Significant differences were found in concentrations of heavy metals in sediments, but there was very little difference among bays in other environmental variables: grain-size characteristics and organic matter content of sediments. Bays polluted by heavy metals had significantly different assemblages to unpolluted bays, were generally less diverse and were characterized by an order-of-magnitude greater abundance of capitellids, spionids, nereids and bivalves. Unpolluted bays had greater abundance of crustaceans and several polychaete families, including paraonids and nephtyids and were generally more diverse. There was a significant correlation between patterns of assemblages and concentrations of heavy metals, but not with other environmental variables.

Epilepsy and Stroke Emerging From Climate Change-Related Neurotoxicity

2019 ◽  
pp. 322-347
Author(s):  
Hind Benammi ◽  
Omar El Hiba ◽  
Abdelmohcine Aimrane ◽  
Nadia Zouhairi ◽  
Hicham Chatoui ◽  
...  
Keyword(s):  
Climate Change ◽  
Heavy Metals ◽  
Nervous System ◽  
Toxic Elements ◽  
Neurological Diseases ◽  
Quality Of Water ◽  
Wide Range ◽  
The Impact ◽  
Shed Light

Climate change has an important impact on the environment. As it degrades the quality of water, soil, and area, it also spreads the distribution of many toxic elements, specifically heavy metals and pesticides. The impact of climate change on contamination with heavy metals and pesticides has been well investigated and discussed. The influence of these elements on human health is obviously exacerbated following their extended distribution. Moreover, a wide range of health problems have been associated to such intoxication, among which impairment and dysfunction of the nervous system are prominent. In this chapter, the authors will shed light on two most common neurological diseases such as epilepsy and stroke affecting people worldwide arising from food and water contaminations, mainly with heavy metals and pesticides.

A NATIONWIDE SURVEY OF HEAVY METAL ABSORPTION IN CHILDREN LIVING NEAR PRIMARY COPPER, LEAD, AND ZINC SMELTERS

1977 ◽  
Vol 106 (4) ◽  
pp. 261-273 ◽  
Author(s):  
EDWARD L BAKER ◽  
CARL G HAYES ◽  
PHILIP J. LANDRIGAN ◽  
JAN L. HANDKE ◽  
RONALD T. LEGER ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Nationwide Survey ◽  
Lead And Zinc ◽  
Metal Absorption ◽  
Copper Lead

scholarly journals Fluorescent Sensors for the Detection of Heavy Metal Ions in Aqueous Media

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 599 ◽  
Author(s):  
Nerea De Acha ◽  
César Elosúa ◽  
Jesús Corres ◽  
Francisco Arregui
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Organic Dyes ◽  
Aqueous Media ◽  
High Specificity ◽  
Fluorescent Sensors ◽  
Special Focus ◽  
Quality Of Water

Due to the risks that water contamination implies for human health and environmental protection, monitoring the quality of water is a major concern of the present era. Therefore, in recent years several efforts have been dedicated to the development of fast, sensitive, and selective sensors for the detection of heavy metal ions. In particular, fluorescent sensors have gained in popularity due to their interesting features, such as high specificity, sensitivity, and reversibility. Thus, this review is devoted to the recent advances in fluorescent sensors for the monitoring of these contaminants, and special focus is placed on those devices based on fluorescent aptasensors, quantum dots, and organic dyes.

scholarly journals Researches on the accumulation and transfer of heavy metals in the soil in tomatoes -Solanum lycopersicum

2019 ◽  
Vol 112 ◽  
pp. 03020
Author(s):  
Mihaela Niţu ◽  
Augustina Pruteanu ◽  
Despina Maria Bordean ◽  
Carmen Popescu ◽  
Gyorghy Deak ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Transfer Coefficient ◽  
Human Body ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Tomato Fruit ◽  
Human Consumption ◽  
Tomato Fruits ◽  
Lead And Zinc ◽  
Copper Lead

Heavy metals in contaminated soils have benefited from a considerable attention due to the possible risks for the human body. The current study has investigated the accumulation and transfer coefficient for three heavy metals (Cu, Pb, Zn) found in the contaminated soil with three concentrations (c1=1.5%, c2=3.0%, c3=4.5%, c4=6.0%), obtained by mixing the three metals, in the tomato fruit. The highest accumulation in the tomato fruits was recorded for zinc, then copper and the smallest for lead, for all four concentrations used. The transfer coefficient decreases as the concentration of heavy metals increases, so that for high heavy metals concentrations, the values of the transfer coefficient are very low, and for small heavy metals concentrations in the soil, the values for the transfer coefficient are higher. The assessment of accumulation and transfer of heavy metals in the fruits of tomatoes grown in the contaminated soil has concluded that all concentrations of the copper, lead and zinc mix have shown a low risk for human consumption.

Analysis on Pb, Cd, Cr, As, Mn Emission and Control Technology of Typical Industries

2012 ◽  
Vol 610-613 ◽  
pp. 1176-1187 ◽  
Author(s):  
Tao Yue ◽  
Fan Wang ◽  
Bin Jie Han ◽  
Peng Lai Zuo ◽  
Fan Zhang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Flue Gas ◽  
Power Plants ◽  
Raw Materials ◽  
Control Technology ◽  
Generator System ◽  
Lead And Zinc ◽  
Metal Contents ◽  
Industrial Boilers

The heavy metals including Pb, Cd, Cr, As and Mn emission characteristics of coal-fired power plant boilers, industrial boilers, lead and zinc smelters, cement kilns, and steel industries were studied in this paper. The removing effects of heavy metals by pollution control technology were analyzed. ICP-AES method was used to measure the contents of heavy metals in solid samples. In addition, M-29, the U.S. EPA isokinetic sampling method was used to sample heavy metals in the flue gas, and the sampled heavy metals were tested by ICP-AES-hydride generator system. For coal-fired boilers, heavy metal contents in descending order were Mn, Pb and Cd in the tested coal. The heavy metals’ emission concentrations of coal-fired industrial boilers were much higher than the heavy metals’ emission concentrations of power plants. For the lead and zinc smelters, Pb and its compounds in flue gas after cleaning can meet the emission standards. The heavy metal contents in the cement raw materials in descending order were Pb, Cr and Cd. For the sintering mixture, the heavy metal contents in descending order were Pb, Cr and Cd as well. The removal effects of heavy metals by existing pollutant control technologies in the various typical industries were also tested and analyzed in the paper. The research did in the paper made a scientific basis for controlling heavy metal emissions from typical industries.

scholarly journals Genotoxic Effect of Heavy Metals Cr, Cu, Pb and Zn using Allium cepa L.

2017 ◽  
Vol 14 (3) ◽  
pp. 1181-1186 ◽  
Author(s):  
M.N. Abubacker ◽  
C. Sathya
Keyword(s):  
Heavy Metals ◽  
Allium Cepa ◽  
Chromosomal Abnormalities ◽  
Root Tip ◽  
Chromosome Loss ◽  
Chromosome Break ◽  
Root Tips ◽  
Lead And Zinc ◽  
Chromosome Bridge ◽  
Copper Lead

ABSTRACT: Angiosperms are recognized as appropriate genetic models to detect heavy metal based environmental mutagens and are used in monitoring studies. Allium cepa (onion) has been used to evaluate DNA damages like chromosome aberrations and abnormalities in the mitotic cycle. The aim of the present study is to analyze the cytotoxic effects of chromium, copper, lead and zinc in A. cepa root tip squash mitotic cell divisions. The root tips were treated with three concentrations, viz. 5, 10 and 20 mg/100 ml of chromium, copper, lead and zinc at room temperature for 24 h. Mitotic indices and chromosomal abnormalities were calculated. It was observed that these heavy metals induced different types of chromosomal abnormalities comprising of Chromosome break, Chromosome bridge, C-mitosis, Vagrant, Delayed Anaphase and Vagrant, Chromosome Loss, Polyploidy and Chromosome Bridge, Chromosome Loss and Loculated Nucles, Stickiness, Multipolarity and Polyploid prophase along with the increasing doses. The effect of chromium and lead at 20 mg/100 ml concentration was found to be more toxic rather than copper and zinc to the root meristem of A. cepa. The ranking of cytotoxic potentials was in the descending order: lead > chromium > copper > zinc.

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