scholarly journals Investigation of mercury pollution in hornbeam trees of green space in industrial park area

2020 ◽  
Vol 25 (1) ◽  
Author(s):  
Seyed armin Hashemi ◽  
Sahar Tabibian ◽  
Gholamreza Vaghar ◽  
Seyed Yousef Torabian
Keyword(s):  
Heavy Metal ◽  
Green Space ◽  
Average Concentration ◽  
Industrial Park ◽  
Carpinus Betulus ◽  
Steel Factory ◽  
Leaf Chlorophyll ◽  
Dry Digestion ◽  
North Of Iran ◽  
Park Area

The heavy metal mercury among other toxic metals can accumulate in plant organs in large quantities toxic to humans. Carpinus betulus is a most species from Caspian hyrcanian Mixed Forests, in this research it was studied that how much mercury absorbed from the environment . Twenty five  trees were randomly selected, and the distances between trees(Hornbeam) were 10 to 15 meters in industrial park in North of Iran . From each tree selected, 15  grams leaves and 15 grams root were harvested with horticultural scissors and 15 g of soil from 30 cm depth. Four stations were selected near  steel factory. A control station, located 2 km from the steel factory was selected and three stations were located near the steel factory. Samples of leaves, soil and roots are prepared after encoding, placed in paper envelopes and transferred to the lab. The amount of mercury in plant samples was prepared by dry digestion with atomic absorption spectroscopy. To compare the effect of mercury concentration on leaf and stem and root, Tukey's test was used. The average concentration of mercury in soil is 0.96 mg / kg, root 0.551 mg / kg, leaf 0.28 mg / kg. With increasing mercury, observed in the amount of leaf chlorophyll content is decreased. According to conducted investigations in study the Carpinus betulus tree can be concluded that the accumulation amount of heavy metal, mercury, and hornbeam is suitable for absorbing the contamination of mercury of soil pollution

Detecting of heavy metal pollution in steel factory environment health of the North of Iran

2016 ◽  
Vol 36 (4) ◽  
pp. 225-228 ◽  
Author(s):  
Seyed Armin Hashemi ◽  
Abdolkarim Keshavarz Shokri ◽  
Masoomeh Tahvildari
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Steel Factory ◽  
The North ◽  
North Of Iran

scholarly journals Temporal and spatial variation on heavy metal concentrations in the oyster Ostrea equestris on the northern coast of Rio de Janeiro State, Brazil

2005 ◽  
Vol 65 (1) ◽  
pp. 67-76 ◽  
Author(s):  
A. G Ferreira ◽  
A. L. S. Machado ◽  
I. R. Zalmon
Keyword(s):  
Heavy Metal ◽  
Spatial Variation ◽  
Rio De Janeiro ◽  
Dry Weight ◽  
Temporal Variations ◽  
Average Concentration ◽  
Northern Coast ◽  
High Concentrations ◽  
Janeiro State ◽  
Ostrea Equestris

Heavy metal (Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) concentrations were determined by ICP-AES in Ostrea equestris from three beaches (Barra do Furado, Buena, and Ponta do Retiro) on the northern coast of Rio de Janeiro State. The average concentration was 0.8 ± 0.18, 0.4 ± 0.21, 58 ± 25.6, 249 ± 52.3, 11 ± 1.31, 0.55 ± 0.16, 0.13 ± 0.11, and 1131 ± 321 µg.g-1 dry weight for Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn respectively. Significant spatial variation (p < 0.05) between the samples areas occurred for Cr, Pb, and Zn with higher values in Barra do Furado; and for Cu in Ponta do Retiro. Significant temporal variations (p < 0.05) were observed for all metals except Cu. Temporal variability may be related to changes in the inputs of metals associated with suspended particles. Concentrations were similar to those found in areas under low pollution impact, except for Zn, the high concentrations of which probably reflect the physiological characteristics of these organisms.

scholarly journals Temporal and spatial variation on heavy metal concentrations in the bivalve Perna perna (LINNAEUS, 1758) on the northern coast of Rio de Janeiro State, Brazil

2004 ◽  
Vol 47 (2) ◽  
pp. 319-327 ◽  
Author(s):  
Alexandre Gomes Ferreira ◽  
André Luís dos Santos Machado ◽  
Ilana Rosental Zalmon
Keyword(s):  
Heavy Metal ◽  
Rio De Janeiro ◽  
Dry Weight ◽  
Temporal Variations ◽  
Average Concentration ◽  
Northern Coast ◽  
Perna Perna ◽  
Metal Concentrations ◽  
Significant Difference ◽  
Janeiro State

Heavy metal (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) concentrations were studied in Perna perna from three beaches (Barra do Furado, Buena and Ponta do Retiro) on the northern coast of Rio de Janeiro State by ICP-AES. The average concentration was 0.3 ± 0.04 (Cd); 1.9 ± 0.6 (Cr); 6.1 ± 0.7 (Cu); 1,130 ± 113 (Fe); 22 ± 3.2 (Mn); 9.3 ± 4.6 (Ni); 0.4 ± 0.2 (Pb); 44 ± 5.8 (Zn) µg.g-1 dry weight. There were no significant difference for almost all the studied metals in relation to sex. Although, significant spatial variations (p < 0.05) occurred for Cr, Pb and Ni with higher values for Barra do Furado. Temporal variations were significant (p < 0.05) at the three beaches, however, no trends of accumulation were observed. The metal concentrations were similar to areas under low pollution impact, except for Fe, which was probably due to the local substrates enriched in iron oxides.

scholarly journals Influence of Spatial Characteristics of Green Spaces on Microclimate: A Case Study in Suzhou Industrial Park, China

2021 ◽  
Author(s):  
Xiangdong Xiao ◽  
Lulu Zhang ◽  
Yimei Xiong
Keyword(s):  
Urban Heat Island ◽  
Green Space ◽  
Green Spaces ◽  
Medium Size ◽  
Industrial Park ◽  
Air Cooling ◽  
Heat Island ◽  
Local Cooling ◽  
Urban Green Spaces ◽  
Urban Heat

Abstract Continuous urban development leads to urban heat island effects. Research suggests that urban green spaces can help effectively reduce urban heat island effects in the summer. Previous studies have mainly focused on the influence of different underlying surfaces on air cooling and humidification. There is a lack of in-depth research on the relationship between park structure and microclimatic effects. Here, we examined the main landscape parameters of green spaces in 15 parks located in Suzhou Industrial Park (SIP) with a subtropical maritime monsoon climate zone during the summer to analyze their influence on the microclimate. The average cooling and humidifying effect of medium-size green spaces was most significant during high-temperature hours in the daytime. When the distance to a water body was the same, the average cooling and humidifying effect ranked as follows: large-size green space > small-size green space > medium-size green space. We explored the mechanisms of the local cooling and humidifying effects of woodland and water areas in parks by numerical simulations. The significance of the cooling and humidifying effects of water areas of different shapes was as follows: annular water > massive water > banded water. This confirmed that the shape and size of water areas within a green space has a significant influence on local cooling and humidification.

scholarly journals Heavy metal (As, Cd, Cr, Hg, Pb) analysis and identification of heavy metal resistant bacteria in sediments from Manado Bay

2021 ◽  
Vol 926 (1) ◽  
pp. 012096
Author(s):  
B J Kepel ◽  
W Bodhi ◽  
Fatimawali ◽  
T E Tallei
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Average Concentration ◽  
Resistant Bacteria ◽  
Icp Oes ◽  
Sediment Samples ◽  
Heavy Metal Concentrations ◽  
The World ◽  
Heavy Metal Resistant ◽  
16Srrna Gene

Abstract Environmental pollution from heavy metals is becoming a growing concern due to the adverse effects it is causing throughout the world. This study aims to analyze heavy metal concentrations and identify heavy metal resistant bacteria in the bay of Manado. Sediment samples were collected from five bays in Manado. The concentrations of heavy metals As, Cd, Cr, Hg and Pb were analyzed using ICP-OES, and Hg using CV-AFS. Bacteria from the sediment were grown in nutrient broth media containing heavy metals As, Cd, Cr, Hg and Pb respectively. Microbiology and 16SrRNA gene analysis were used to identify the bacteria that grown on media containing varying concentrations of heavy metals. The results showed that the sediments from the five bays in Manado contained heavy metals with an average concentration of As <1mg/kg, Cd 1.8mg/kg), Cr 6.2mg/kg, Hg <0.07mg/kg). and Pb 11.2mg/kg. The results of microbiological and molecular analysis showed that 5 species of heavy metal resistant bacteria were Pseudomonas aeruginosa, Bacillus cereus, Staphylococcus arlettae, Acinobacter sp., and Brevibacterium sp. The five bacteria found to be resistant to heavy metals can be used to detoxify As, Cd, Cr, Hg, and Pb.

scholarly journals The cup plant (Silphium perfoliatum L.) – a viable solution for bioremediating soils polluted with heavy metals

2020 ◽  
Vol 48 (4) ◽  
pp. 2095-2113
Author(s):  
Radu L. SUMALAN ◽  
Cornelia MUNTEAN ◽  
Ana KOSTOV ◽  
Daniel KRŽANOVIĆ ◽  
Noemi L. JUCSOR ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Translocation Factor ◽  
Average Concentration ◽  
Mining Sites ◽  
Viable Solution ◽  
High Concentrations ◽  
Living Organisms ◽  
Alert Threshold

Heavy metal pollution, manifested by the accumulation, toxicity and persistence in soil, water, air, and living organisms, is a major environmental problem that requires energetic resolution. Mining tailing areas contain metal minerals such as Cu, Zn, Pb, Cr and Cd in high concentrations that pollute the environment and pose threats to human health. Phytoremediation represents a sustainable, long-term, and relatively inexpensive strategy, thus proving to be convenient for stabilizing and improving the environment in former heavy metal-polluted mining sites. This study presents the bioremediation potential of Silphium perfoliatum L. plants, in the vegetative stages of leaf rosette formation, grown on soil polluted with heavy metals from mining dumps in Moldova-Noua, in the Western part of Romania. The bioaccumulation factor (BAF), translocation factor (TF), metal uptake (MU) and removal efficiency (RE) of Cu, Zn, Cr and Pb by S. perfoliatum plants were determined in a potted experiment in controlled environmental conditions. The reference quantities of heavy metals have been determined in the studied soil sample. The experiment followed the dynamics of the translocation and accumulation of heavy metals in the soil, in the various organs of the silphium plants, during the formation of the leaf rosette (13-18 BBCH). The determination of the amount of heavy metals in soil and plants was achieved by the method of digestion with hydrochloric and nitric acid 3/1 (v/v) quantified by atomic absorption spectroscopy (AAS). The obtained experimental results demonstrate that the substrate has a high heavy metal content being at the alert threshold for Zn (260.01 mg kg-1 in substrate compared with alert threshold 300 mg kg-1) and at intervention thresholds for other metals (Cu -234.66 mg kg-1/200 mg kg-1; 299.08 mg kg-1/300 mg kg-1 and Pb-175.18 mg kg-1/100 mg kg-1). The average concentration of the metals determined in dynamics in the dry biomass of plants varied between roots, petioles, and laminas. The root is the main accumulator for Cu and Cr (Cu – 37.32 mg kg-1 -13 BBCH to 43.89 mg kg-1-15 BBCH and 80.71 mg kg-1 – 18 BBCH; Cr – 57.43 mg kg-1 – 13 BBCH to 93.36 mg kg-1 -18 BBCH), and for Zn and Pb the lamina seems to carry the same function. Preliminary results show that Silphium perfoliatum may be a viable alternative in the bioremediation and treatment of heavy metal-contaminated area.

scholarly journals Heavy Metal Concentration (Pb, Cu, Cd, Zn) In Water And Sediments In Serangan Waters, Bali

2021 ◽  
Vol 8 (1) ◽  
pp. 115
Author(s):  
Gede Surya Indrawan ◽  
I Nyoman Giri Putra
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sea Water ◽  
Heavy Metal Concentration ◽  
Average Concentration ◽  
Quality Guidelines ◽  
Average Analysis ◽  
Standard Quality ◽  
Canadian Council ◽  
Council Of Ministers

 Heavy metal pollution can disturb aquatic ecosystems and indicator of water quality. This study aims to determine the concentration of heavy metals (Pb, Cu, Cd, Zn) in water and sediments. This study was conducted in the waters of Serangan, South Denpasar District, Bali in June-August 2019. The research with each location taking 8 points of water and sediment sampling and measuring the quality of its waters. Water samples taken at the surface of the water as much as 330 ml and sediment samples taken as much as 500 grams. The method used is wet ashing preparation and analyzed by means of AAS (Atomic Absorbsion Spektrophotometri). The results of the average analysis of heavy metal concentrations in water are Pb 0 mg / L, Cd 0.438 mg / L, Cu 0 mg./L, and Zn 0.284 mg / L. The results of the analysis are compared with the standard quality value of sea water that the heavy metals Cd and Zn have exceeded the threshold. While the average concentration of heavy metals in sediments are Pb 17.444 mg / kg, Cd 18.093 mg / kg, Cu 113.981 mg / kg, and Zn 53.505 mg / kg. The concentration of Cd and Cu heavy metals exceeds the limits set by the ANZECC / ARMCANZ quality guidelines and the Canadian Council of Ministers of the Environment.

scholarly journals Pollution Evaluation Based on Physicochemical and Heavy Metal Levels of Miniokoro Stream, Port Harcourt, Nigeria

2021 ◽  
pp. 27-37
Author(s):  
D. M. Abbey ◽  
M. E. Abbey ◽  
T. C. Ogunyemi ◽  
M. E. Abbey
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Samples ◽  
Physicochemical Parameters ◽  
Anthropogenic Impacts ◽  
Average Concentration ◽  
Port Harcourt ◽  
Metal Levels ◽  
Management Plans ◽  
The Government

Evaluation of physicochemical parameters and heavy metal levels in surface water of the Miniokoro stream, Port Harcourt, Nigeria were investigated to determine its potability and pollution status at various stations along the stream.  The physicochemical parameters analyzed in the water samples were: pH, Temperature, Salinity, Electrical conductivity, TDS, DO, BOD, Alkalinity, Chloride, NH4+, NO3-, PO43-, SO42- while heavy metals such as Nickel, lead, Iron, Zinc and Chromium were analyzed using atomic absorption spectrophotometer. The results from the research showed an average concentration level of the physicochemical parameters such as pH (5.79-7.01), EC (136.43 - 960.67µS/cm), TDS (90.17 - 1517.67) and the spatial distribution of heavy metals: zinc (0.07 - 1.09mg/l), chromium (0.03 - 0.09mg/l), nickel (0.07 - 0.08mg/l) and iron (12.29 - 39.95mg/l). Water samples from various stations depicts the varying level of pollution along the stream when compared with national and international permissible limit. Thus, it suggests that the government should develop and implement an effective waste management plans due to environmental and other anthropogenic impacts on the stream.

scholarly journals Water striders (Heteroptera, Gerridae) as bioindicators of heavy metal pollution

1997 ◽  
Vol 8 (4) ◽  
pp. 185-191 ◽  
Author(s):  
Martin Lodenius ◽  
Matti Nummelin ◽  
Esa Tulisalo
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Metal Content ◽  
Dry Weight ◽  
Determination Limit ◽  
Water Strider ◽  
Steel Factory ◽  
Water Striders ◽  
Metal Contents

Heavy metal contents of water striders collected near a steel factory and from control sites were analyzed by AAS. The average concentrations µg/g of dry weight found near the factory vs. the control areas were: Al 76, 65; Fe 840, 330; Mn 49, 37; Zn 310, 280; Cu 44, 42; Cd 1.6, 6.5, respectively. In most cases Ni and Pb concentrations were below the determination limit in both sites. There were significant differences between sites in the concentrations of iron and cadmium. Fifth instar larvae had higher iron content than adults, but sexes did not differ in heavy metal content. There were also significant differences between different water strider species as accumulators of zinc, aluminium and cadmium. It is concluded that water striders seem suitable as bioindicators of heavy metals.

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