scholarly journals Variaciones de los niveles de mercurio y zinc en agua y sedimentos de la subcuenca del río Carrizal, Manabí

2019 ◽  
Vol 4 (1) ◽  
pp. 25
Author(s):  
Ana María Aveiga Ortiz ◽  
Patricio Noles ◽  
Patricio Noles ◽  
Julio Loureiro ◽  
Fabian Peñarrieta ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Environmental Pollution ◽  
Human Health ◽  
Aquatic Life ◽  
Natural Sources ◽  
Water And Sediment ◽  
Sampling Points ◽  
International Regulations ◽  
Index Terms ◽  
Del Rio

Excessive concentrations of mercury and zinc in natural sources are a risk to human health and to the development of adequate aquatic life. In the present study, the concentrations of Hg and Zn in samples of water and sediment from the Carrizal River (Cantón Bolívar, Manabí) were determined in two periods (August and October). In addition, 5 sampling points were characterized at La Esperanza reservoir, 7 at Carrizal river micro-basin, and 9 at the river sub-basin, covering an area of 51 km. The concentrations of Hg and Zn in the sediments were significantly higher than the concentrations obtained in the water. The contents of Hg in water and sediments of Carrizal River exceeded the safety limits established by national and international regulations; while the Zn concentrations obtained are considered to be a risk for aquatic life. Index Terms—bioaccumulation, adsorption, environmental pollution, heavy metals

Investigation of the presence of halogenated bi-products formation in the drinking water network in Tulkarm District / Palestine

2014 ◽  
Vol 2 (1) ◽  
pp. 29-34
Author(s):  
Saed Khayat ◽  
Xavier Martinez Lladó ◽  
Basel Natsheh ◽  
Tahseen Sayara ◽  
Nawaf Abu-Khalaf
Keyword(s):  
Heavy Metals ◽  
Developing Countries ◽  
Drinking Water ◽  
Trace Metals ◽  
Organic Carbon ◽  
Pollution Source ◽  
Halogenated Hydrocarbons ◽  
Water Network ◽  
Natural Sources ◽  
Sampling Points

The problem of pollutants in drinking water networks is neglected in many places all over the developing countries. This problem is normally caused by either direct pollution source such as organic carbon, or from the maceration pollutants of network materials. The heavy metals in the network facilities and the DOC from the wastewater leakage on the formation of toxic by-product in the water network and the rate of halogenated hydrocarbons formation in the drinking water network was studied. Results showed that water has the same constituents of pollutants similar to that before its being stored for relatively long periods. The results showed also that the trend of halogenated hydrocarbons formation is correlated, but not restricted, to the availability of total organic carbons. The amount of CCl2Br and CClBr2 were the highest, which indicate that most of the halogens are originated from natural sources. The Strontium values where the most dominant in all sampling points followed by Barium and Boron, which are the most abundant trace metals normally found in the groundwater in Tulkarm area

Investigation of the presence of halogenated bi-products formation in the drinking water network in Tulkarm District / Palestine

2014 ◽  
Vol 2 (1) ◽  
pp. 29-34
Author(s):  
Saed Khayat ◽  
Xavier Martinez Lladó ◽  
Basel Natsheh ◽  
Tahseen Sayara ◽  
Nawaf Abu-Khalaf
Keyword(s):  
Heavy Metals ◽  
Developing Countries ◽  
Drinking Water ◽  
Trace Metals ◽  
Organic Carbon ◽  
Pollution Source ◽  
Halogenated Hydrocarbons ◽  
Water Network ◽  
Natural Sources ◽  
Sampling Points

The problem of pollutants in drinking water networks is neglected in many places all over the developing countries. This problem is normally caused by either direct pollution source such as organic carbon, or from the maceration pollutants of network materials. The heavy metals in the network facilities and the DOC from the wastewater leakage on the formation of toxic by-product in the water network and the rate of halogenated hydrocarbons formation in the drinking water network was studied. Results showed that water has the same constituents of pollutants similar to that before its being stored for relatively long periods. The results showed also that the trend of halogenated hydrocarbons formation is correlated, but not restricted, to the availability of total organic carbons. The amount of CCl2Br and CClBr2 were the highest, which indicate that most of the halogens are originated from natural sources. The Strontium values where the most dominant in all sampling points followed by Barium and Boron, which are the most abundant trace metals normally found in the groundwater in Tulkarm area

scholarly journals Hazards posed by polycyclic aromatic hydrocarbons contained in the dusts emitted from motor vehicle braking systems

2016 ◽  
Vol 42 (3) ◽  
pp. 3-10
Author(s):  
Zdzisław Chłopek ◽  
Katarzyna Suchocka ◽  
Magdalena Dudek ◽  
Andrzej Jakubowski
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Environmental Pollution ◽  
Human Health ◽  
Aromatic Hydrocarbons ◽  
Motor Vehicle ◽  
Dust Emission ◽  
Soil Sampling ◽  
Sampling Points ◽  
Polycyclic Aromatic

Abstract Results of research on the hazard posed by polycyclic aromatic hydrocarbons contained in the dusts emitted from motor vehicle braking systems have been presented. The polycyclic aromatic hydrocarbons (PAHs) constitute a group of chemical compounds that pose a serious danger to the human health, chiefly because of their carcinogenic properties. Investigations into the issue of environmental pollution with polycyclic aromatic hydrocarbons generated by motor vehicle traffic were carried out in connection with the work being done at PIMOT on systems to reduce dust emission from motor vehicle braking systems. The investigations included determination of PAH contents of the dust emitted from vehicle braking systems as well as the PAH concentrations in the indoor air in a room with the stand for testing dust emissions from braking systems and in the duct to carry away gases from that room. Moreover, the PAH contents of soil were measured in the context of location of the soil sampling points in relation to traffic routes. The PAH contents were measured in Warsaw and in Zabrze. The investigation results confirmed that PAHs considered as being most harmful to the human health due to their carcinogenic properties were actually present in the dusts emitted from braking systems. The PAH contents of soil were found to be very sensitive to the location of the soil sampling points in relation to traffic routes and this is a confirmation of the thesis that motor traffic is an important source of environmental pollution with polycyclic aromatic hydrocarbons.

scholarly journals Kandungan Logam Berat pada Kerang Kepah (Meritrix meritrix) dan Air Laut di Perairan Banjarmasin

2006 ◽  
Vol 8 (2) ◽  
pp. 177
Author(s):  
Jovita Tri Murtini ◽  
Rosmawaty Peranginangin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Maximum Concentration ◽  
Metal Content ◽  
Sea Water ◽  
Mercury Content ◽  
Hard Clam ◽  
Water And Sediment ◽  
Sampling Points

Studies on heavy metal content of Meritrix meritrix and surrounding waters as well as the quality of Banjarmasin waters were done. Observation was carried out in June, August and October 2003 at 6 sampling points, 3 stations were 1 mile while 3 others were 2 miles from coastal line. Distance between stations was approximately 1 mile. The samples collected from each station were hard clam (Meritrix meritrix), sea water and sediment. Heavy metals content, Hg, As, Cd, Cu and Pb, in hard clam and mercury content in sea water and sediment were analyzed by atomic absorption spectrophotometer (AAS). The result showed that Hg content of Banjarmasin waters in June, August and October 2003 were 6.05, 3.17, and 4.91 ppb, respectively, indicated that Banjarmasin waters had been polluted by mercury. Whereas the hard clam in Banjarmasin waters contained Hg (1.91 ppb), As (0.88 ppb), Cd (0.22 ppb), Cu (0.46 ppb), and Pb (0.32 ppb) which were still under the maximum concentration for consumable clam.

scholarly journals MODELADO DE METALES PESADOS EN EL FLUJO DE AGUA Y LODOS DEL ECOSISTEMA BENTÓNICO DEL RÍO BOGOTÁ – COLOMBIA

2021 ◽  
Vol 10 (2) ◽  
pp. 1-8
Author(s):  
Luis Felipe Pinzón Uribe
Keyword(s):  
Heavy Metals ◽  
Considerable Increase ◽  
Anthropogenic Activities ◽  
Environmental Problems ◽  
Water Bodies ◽  
Industrial Processes ◽  
Sampling Points ◽  
High Concentrations ◽  
Magdalena River ◽  
Del Rio

Industrial processes have created environmental problems because of the discharge of pollutants into the environment. Especially the water bodies have been contaminated by HM heavy metals. The Bogotá river has registered a considerable increase in these HM as it advances in its channel towards the Magdalena river without its effects on the benthic ecosystem have been established. The present study used the Bogotá river as a study source. This is born in the municipality of Villapinzón-Colombia and empties into the Magdalena River. The selected sampling points correspond to sectors where anthropogenic activities are carried out. The results showed the relation of its concentration for various metals, developing for each one the calibration curves in the water and the sediments. Although high concentrations were obtained in some sectors, they were within the parameters established by Colombian legislation.

scholarly journals Physicochemical and Bacteriological Characterization of Industrial Wastewater Being Discharged to Surface Water Bodies: Significant Threat to Environmental Pollution and Human Health

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Muhammad Tariq ◽  
Alia Anayat ◽  
Muhammad Waseem ◽  
Muhammad Hidayat Rasool ◽  
Muhammad Asif Zahoor ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Environmental Pollution ◽  
Human Health ◽  
Industrial Wastewater ◽  
Driving Forces ◽  
Climatic Factors ◽  
Research Work ◽  
Living Standard ◽  
Untreated Wastewater ◽  
Wastewater Samples

In developing countries, various sociodemographic and climatic factors such as urbanization, industrialization, and improved living standard, and water and energy demands will all characterize wastewater’s future. Increasing population and water shortage are the main driving forces for the reuse of untreated wastewater for irrigation and other uses in many poor countries, posing a significant threat to global food security. Although wastewater contains essential nutrients required for plant growth, it also contains toxic heavy metals and pathogens that pose a significant threat to the environment and human health. Present research work was carried out to study important physicochemical and microbiological parameters of industrial wastewater collected from various discharged points at different locations of Kala Shah Kaku (KSK) city, Pakistan. Physicochemical parameters such as pH, temperature, sodium, calcium, magnesium, bicarbonates, sodium adsorption ratio, chlorides, and heavy metals such as nickel, cadmium, and iron of all industrial wastewater samples were within the standard limits. However, certain water’s quality parameters such as TSS, BOD, COD, residual sodium carbonate, heavy metals such as chromium, and total suspended solids of all samples were exceeding the maximum allowable limits listed by Pakistani Standards. Carbonates, manganese, and cobalt were not detected in any of the wastewater samples. Total viable count and total coliform counts were higher in all samples describing low levels of sanitation. Contamination of fecal coliform and Escherichia coli was observed in about 50% of the studied wastewater samples. The overall results focus on the discharge of highly polluted wastewater in and around KSK city. Indirectly it creates significant threats to environmental pollution and human health. Continuous monitoring of physicochemical and microbial indicators of effluent’s quality for its reuse for irrigation purpose is proposed to safeguard the public health and environment.

A Combination of Dracaena fragrans and Trichoderma fungus in Removing Heavy Metals Contamination from Agricultural Soils

2021 ◽  
Vol 873 ◽  
pp. 19-24
Author(s):  
Huu Quang Le ◽  
Dung Duc Tran ◽  
Yi Ching Chen ◽  
Au Hai Nguyen ◽  
Lan Huong Nguyen
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Environmental Pollution ◽  
Human Health ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Agricultural Soils ◽  
Polluted Soils ◽  
Heavy Metals Contamination ◽  
Technological Methods

Environmental pollution due to heavy metals is a matter of great concern to many scientists and managers worldwide. The threats to human health from heavy metals are primarily associated with the exposure in agriculture production activities. However, a considerable number of technological methods have been used to remove the heavy metals from polluted soils. One of the simplest measures to effectively remove heavy metal contamination is to use both plants and microorganisms, which have been considered "natural materials" or "Bio-Materials" to treat pollutants. This study was conducted on assessing the ability of Trichoderma to absorb heavy metals into the plant. Phytoremediation experiments with Trichoderma were used to remove heavy metals in the soil. Our findings showed that Dracaena Fragrans plants are capable of absorbing heavy metals Cu, Pb, and Zn in soil contaminated with experimental heavy metals.

Comparative Study Regarding Heavy Metals Content in Air from Targu Jiu and Rovinari

2018 ◽  
Vol 68 (12) ◽  
pp. 2839-2844
Author(s):  
Camelia Capatina ◽  
Daniela Cirtin
Keyword(s):  
Heavy Metals ◽  
Comparative Analysis ◽  
Environmental Pollution ◽  
Human Development ◽  
Human Health ◽  
International Organizations ◽  
Environment Pollution ◽  
Negative Effects ◽  
Limit Values ◽  
Complex Subject

Environmental pollution represents an important and complex subject with a huge concern for both scientists in different fields, but also for the governments, national and international organizations. Besides the indisputable advantages of the industry for the human development, it has a big contribution to environmental pollution with negative effects to the human health. Heavy metals in the environment have negative effects to the ecosystems and to human health. Consequently, it is necessary to determine the level of heavy metals in the environment to take measures to reduce the environment pollution. According to this issue, the main purpose of these research studies is to perform a comparative analysis of heavy metals content in Targu-Jiu and Rovinari area, those being ones of the most pollution affected areas in Jiu county. The results obtained show that the heavy metals contents in PM10 in the air in these areas chosen for the study are below the permitted limit values for the period 2015-2016.

scholarly journals Environmental, Ecological and Human Health Risk Assessment of Heavy Metals in Sediments at Samsun-Tekkeköy, North of Turkey

2021 ◽  
Author(s):  
Arife ŞIMŞEK ◽  
Hülya Böke Özkoç ◽  
Gülfem Bakan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Sampling Point ◽  
Ecological Risks ◽  
Industrial Zone ◽  
Sampling Points ◽  
Factor C

Abstract A detailed study was conducted in order to evaluate the effects of heavy metal pollution in the sediments in terms of environmental, ecological and human health. Sediment samples were collected from 5 different points in two seasons, namely summer (August 2017) and winter (December 2017), to determine the distribution of heavy metals, potential pollutants, toxic and ecological risks in the river sediments in Samsun - Tekkeköy district located in the Mid-Black Sea Region of Turkey and to evaluate the human health risk. The distribution of heavy metals at the sampling points was Fe > Al > Mn > Zn > Cu > Cr > Ni > Pb > Cd based on their averages. According to the toxic risk index (TRI) results, sampling point OIZ (Organized Industrial Zone) Channel (T3) was also found to have a moderate risk, and it was determined that the highest contribution was from Cu > Ni > Cd > Cr, respectively. Potential ecological risk (PERI) results revealed a low risk except for Cd metal at all sampling points. While the sediment enrichment factor (EF) did not show much metallization at many points, the highest enrichment was observed in Cd, Cu, and Zn metals and at sampling point T3. According to the geoaccumulation index (Igeo) and contamination factor (CF), sampling point T3 showed contamination with Cd, Cu, Cr, and Zn. Evaluation of human health risk showed that the hazard index (HI) results of carcinogenic and non-carcinogenic risks were higher among children than adults. The total lifetime cancer risks (TLCR) of heavy metals were within the limits determined by USEPA. However, the risk was ranked as Cr > Cd > Pb. Sediment Quality Guidelines (SQG) and pollution index results showed that heavy metal contamination was due to anthropogenic and industrial activities since the region was an industrial zone. It was determined that heavy metals posed ecological risks and that Samsun-Tekkeköy region was moderately and significantly contaminated.

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