Monitoring of Heavy Metals in Airborne Particles by Using Mosses Collected from the City of Zurich

1984 ◽  
Vol 17 (1) ◽  
pp. 1-12 ◽  
Author(s):  
J. Hertz ◽  
I. Schmid ◽  
L. Thoeni
Keyword(s):  
Heavy Metals ◽  
Airborne Particles ◽  
The City

The impact of urban effluents on the coastal marine environment of Mediterranean islands

1995 ◽  
Vol 32 (9-10) ◽  
pp. 85-94 ◽  
Author(s):  
Michael O. Angelidis
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Marine Environment ◽  
Suspended Particle ◽  
Pollution Source ◽  
Mediterranean Islands ◽  
Coastal Marine Environment ◽  
Coastal Marine ◽  
The Impact ◽  
The City

The impact of the urban effluents of Mytilene (Lesvos island, Greece) on the receiving coastal marine environment, was evaluated by studying the quality of the city effluents (BOD5, COD, SS, heavy metals) and the marine sediments (grain size, organic matter, heavy metals). It was found that the urban effluents of Mytilene contain high organic matter and suspended particle load because of septage discharge into the sewerage network. Furthermore, although the city does not host important industrial activity, its effluents contain appreciable metal load, which is mainly associated with the particulate phase. The city effluents are discharged into the coastal marine environment and their colloidal and particulate matter after flocculation settles to the bottom, where is incorporated into the sediments. Over the years, the accumulation of organic matter and metals into the harbour mud has created a non-point pollution source in the relatively non-polluted coastal marine environment of the island. Copper and Zn were the metals which presented the higher enrichment in the sediments of the inner harbour of Mytilene.

scholarly journals Geochemical Mapping, Risk Assessment, and Source Identification of Heavy Metals in Road Dust Using Positive Matrix Factorization (PMF)

Atmosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 614
Author(s):  
Muhammad Faisal ◽  
Zening Wu ◽  
Huiliang Wang ◽  
Zafar Hussain ◽  
Chenyang Shen
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Matrix Factorization ◽  
Anthropogenic Activities ◽  
Contamination Factor ◽  
Road Dust ◽  
Positive Matrix Factorization ◽  
Prevention Measures ◽  
Positive Matrix ◽  
The City

Heavy metals in road dust pose a significant threat to human health. This study investigated the concentrations, patterns, and sources of eight hazardous heavy metals (Cr, Ni, Cu, Zn, As, Cd, Pb, and Hg) in the street dust of Zhengzhou city of PR China. Fifty-eight samples of road dust were analyzed based on three methods of risk assessment, i.e., Geo-Accumulation Index (Igeo), Potential Ecological Risk Assessment (RI), and Nemerow Synthetic Pollution Index (PIN). The results exhibited higher concentrations of Hg and Cd 14 and 7 times higher than their background values, respectively. Igeo showed the risks of contamination in a range of unpolluted (Cr, Ni) to strongly polluted (Hg and Cd) categories. RI came up with the contamination ranges from low (Cr, Ni, Cu, Zn, As, and Pb) to extreme (Cd and Hg) risk of contamination. The risk of contamination based on PIN was from safe (Cu, As, and Pb) to seriously high (Cd and Hg). The results yielded by PIN indicated the extreme risk of Cd and Hg in the city. Positive Matrix Factorization was used to identify the sources of contamination. Factor 1 (vehicular exhaust), Factor 2 (coal combustion), Factor 3 (metal industry), and Factor 4 (anthropogenic activities), respectively, contributed 14.63%, 35.34%, 36.14%, and 13.87% of total heavy metal pollution. Metal’s presence in the dust is a direct health risk for humans and warrants immediate and effective pollution control and prevention measures in the city.

scholarly journals The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil

2013 ◽  
Vol 85 (4) ◽  
pp. 1289-1301 ◽  
Author(s):  
ESTEFAN M. DA FONSECA ◽  
JOSE A. BAPTISTA NETO ◽  
JOHN MCALISTER ◽  
BERNARD SMITH ◽  
MARCOS A. FERNANDEZ ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Rio De Janeiro ◽  
Water Soluble ◽  
Metal Partitioning ◽  
Fine Grain ◽  
Soluble Phase ◽  
The City ◽  
South Zone

One of the main results of the processes related to urbanization is the contamination of the adjacent water bodies. Inserted in this context, the Rodrigo de Freitas lagoon is situated in the south zone of the city of Rio de Janeiro. This ecosystem receives several inputs containing all sorts of pollutants, including heavy metals. The present work aimed to study the partitioning of heavy metals in the sediments of Rodrigo de Freitas and the influence of organic matter in this fractionation dynamic. The results of these analyses presented the contents of organic matter as an important metal-capturing agent. Fractionation of organic matter resulted in a predominance of humine. Heavy metal partitioning showed that the metals bound by the water-soluble phase have no significant concentrations. Special features such as, reducing sediment, high levels of organic matter and fine grain size have transformed this ecosystem in an effective deposit of pollutants, where heavy metals are not available in easily reactive fractions.

Heavy metals in organs of stray dogs and cats from the city of Naples and its surroundings (Southern Italy)

2018 ◽  
Vol 26 (4) ◽  
pp. 3473-3478 ◽  
Author(s):  
Mauro Esposito ◽  
Antonella De Roma ◽  
Pasquale Maglio ◽  
Donato Sansone ◽  
Giuseppe Picazio ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Southern Italy ◽  
Stray Dogs ◽  
The City

Heavy Metals In Soils And Plants Of Urban Ecosystems (On the Example of the City of Yoshkar-Ola)

2017 ◽  
pp. 111-128
Author(s):  
Olga l. Voskresenskaya ◽  
Elena A. Alyabysheva ◽  
Elena V. Sarbayeva ◽  
Vladimir S. Voskresenskiy
Keyword(s):  
Heavy Metals ◽  
Urban Ecosystems ◽  
The City ◽  
Heavy Metals In Soils

scholarly journals Urban soil assessment caused by heavy metals contamination in Yogyakarta City, Indonesia

2021 ◽  
Vol 851 (1) ◽  
pp. 012026
Author(s):  
A T Sekarningsih ◽  
W Budianta ◽  
I W Warmada ◽  
H Hinode
Keyword(s):  
Heavy Metals ◽  
Surface Soil ◽  
Pollution Index ◽  
Soil Samples ◽  
City Center ◽  
Urban City ◽  
Heavy Metals Contamination ◽  
The City ◽  
Cu And Zn ◽  
Yogyakarta City

Abstract The effect of urbanization and industrialization in the urban city is soil contamination by heavy metals. This study was conducted to assess Pb, Cu, Zn, and Cd, in the soil of Yogyakarta city and its surrounding, Indonesia. The assessment was done by analyzing 45 surface soil samples in the study area, divided into three-zone. They are divided based on the distance of each zone to the center of the city. The zone III is located in the outermost of the study area, and zone I is inside the city. The results of the study showed that generally, the highest concentration of metals was located in zone I, which is located near or directly situated in a city center. The result indicated that Pb and Cd had the highest pollution index compared to Cu and Zn. The pollition load indeks (PLI) and geoaccumulation indeks (Igeo) calculations in the whole study area showed that the values demonstrated a moderate class in average. Special attention was needed to be given to the zone I, which has a higher PLI and Igeo index to reduce the source of emission for Pb and Cd.

scholarly journals Determination of heavy metals (Pb and Cd) in guava pulps (psidium guajava) obtained in the city of Cartagena

2019 ◽  
Vol 17 (2) ◽  
pp. 137
Author(s):  
Diana Gómez-Marrugo ◽  
Glicerio León-Méndez ◽  
Jorge Puello-Silva ◽  
Miladys Torrenegra-Alarcon ◽  
Deisy León-Méndez ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Psidium Guajava ◽  
The City

 El objetivo de este estudio fue determinar los niveles de acumulación de metales pesados como el cadmio (Cd) y el plomo (Pb) derivados de actividades antropogénicas, como los humos metálicos de la soldadura y el tráfico de vehículos, en la pulpa de guayaba (Psidium guajava) en la ciudad de Cartagena. -Bolívar. Las muestras se dividieron en tres (3) grupos según la proximidad de las fuentes de contaminación. En el grupo 1, menos de 100 m de industrias metalúrgicas, las concentraciones de Cd en el rango de 0.0400 ± 0.33 mg / Kg y 0.0483 ± 0.15 mg / Kg, mientras que los valores de Pb oscilaron entre 0.036 ± 0.22 mg / kg y 0.060 ± 0.01 mg / kg . Para el grupo 2, se tomaron muestras en 3 lugares donde no se identificó claramente ninguna fuente de contaminación, lo que resultó en concentraciones de Cd 0.0215 ± 0.05 mg / Kg y 0.0260 ± 0.10 mg / Kg, mientras que para el Pb solo se encontró en una de las muestras cuyo valor fue 0.035 ± 0.15 mg / Kg. Finalmente, para el grupo 3, se tomaron muestras en 2 ubicaciones ubicadas a menos de 100 m de avenidas de alto tráfico, resultando en valores muy similares para Cd (0.0220 ± 0.13 mg / Kg y 0.0311 ± 0. 22 mg / Kg), mientras que para Pb el los valores fueron muy precisos (0.032 ± 0.35 mg / Kg y 0.029 ± 0.20 mg / Kg). Estas mediciones muestran cómo, en sitios cercanos a las actividades humanas, las concentraciones de estos metales pesados están en niveles más altos, lo que representa un peligro para su consumo debido a la bioacumulación en diferentes tejidos humanos.Palabras clave: metales pesados, humo metálico, contaminación, tráfico vehicular.

scholarly journals ABORDAGEM SOBRE O DESCARTE INADEQUADO DE LÂMPADAS FLUORESCENTES, PILHAS E BATERIAS NO ENSINO DE CIÊNCIAS

2018 ◽  
Vol 3 (2) ◽  
pp. 492-505
Author(s):  
Carlos Henrique Damasceno ◽  
Leandro Carbo ◽  
Roberta Lima Moretti ◽  
Gabriel Antonio Ogaya Joerke
Keyword(s):  
Heavy Metals ◽  
Elementary School ◽  
Public Schools ◽  
Data Collection ◽  
Qualitative Approach ◽  
Household Waste ◽  
Previous Knowledge ◽  
Fluorescent Lamps ◽  
The City

Resumo: O objetivo do presente trabalho foi aplicar e avaliar uma proposta didática sobre pilhas, baterias e lâmpadas fluorescentes, no ensino de Ciências, direcionada a estudantes do Ensino Fundamental de duas escolas públicas da cidade de Jaciara-MT. A pesquisa se baseia em uma abordagem qualitativa, tendo como instrumentos de coletas de dados: questionário, observação e diário de campo. Para o planejamento das atividades propostas, os estudantes foram investigados sobre as temáticas, por meio de questionários, de forma a verificar os conhecimentos prévios a respeito dos riscos ocasionados pelo descarte inadequado, destes materiais. Para evidenciar os riscos do descarte inadequado, foram utilizadas duas aulas expositivas/dialogadas e um desafio para o recolhimento dos materiais, que apresentou grande diferença, entre as escolas. Observou-se, por meio das respostas, que a maioria dos estudantes descartam suas pilhas, baterias e lâmpadas fluorescentes, no lixo doméstico, por não saber dos riscos que estes materiais podem causar à saúde e ao meio ambiente, por possuírem metais pesados que são liberados, no caso das pilhas, quando começam a enferrujar e nas lâmpadas fluorescentes, quando são quebradas.Palavras-chave: Descarte inadequado. Pilhas e baterias. Lâmpadas fluorescentes. Abstract: The objective of the present work was to apply and evaluate a didactic proposal on batteries, batteries and fluorescent lamps, in the teaching of science, directed to students of the elementary School of two public schools of the city of, The research is based on a qualitative approach, having as instruments of data collection, questionnaire, observation and Field Journal. For the planning of the proposed activities, the students were investigated on the subjects, by means of questionnaires, in order to verify the previous knowledge about the risks caused by the inappropriate disposal of these materials. To highlight the risks of inappropriate disposal, two expository/dialogue classes were used and a challenge for the collection of materials, which showed great difference between schools. It was observed, through the replies, that most students discard their batteries, batteries and fluorescent lamps in household waste, because they do not know the risks that these materials can cause to health and the environment, because they have heavy metals that are Released, in the case of batteries, when they start to rust and in fluorescent lamps, when they are broken.Keywords: Improper disposal; Batteries; Fluorescent lamps.

Monitoring of the ecological state of the city lake of Chita

2021 ◽  
pp. 52-57
Author(s):  
Vladimir V. Zvyagintsev ◽  
Olga Yu. Zvyagintseva ◽  
Vadim K. Chernyshov
Keyword(s):  
Heavy Metals ◽  
Fluctuating Asymmetry ◽  
Aquatic Ecosystem ◽  
Perca Fluviatilis ◽  
Gibel Carp ◽  
European Perch ◽  
Lake Kenon ◽  
Perch Perca Fluviatilis ◽  
The City

Introduction. The paper presents the results of the studies on assessing the quality of the aquatic ecosystem of a lake located within the city. The European perch (Perca fluviatilis L.) and the Gibel carp (Carassius gibelio) were used as an indicator for determining the quality of the aquatic ecosystem by the method of fluctuating asymmetry. Problem Statement. The aim of the work was to conduct monitoring with the subsequent assessment of the quality of the ecosystem of the city lake using the method of fluctuating asymmetry (hereinafter FA). Theoretical and Practical Part. The quality of the urban lake aquatic ecosystem was assessed using the FA method (indicators: the European perch (Perca fluviatilis L.), 1758 and the Gibel carp (Carassius auratus Bloch), 1783). To identify the reasons for the high PFA values, a chemical analysis (in an accredited laboratory) of the gills of the Gibel carp for heavy metals was performed. Conclusions. As a result of the research, the FA indicators values for these indicators were obtained. According to the results of a laboratory study of the content of heavy metals in the gill arches of the Gibel carp, an excess of the maximum permissible concentration of 8 out of 10 analyzed elements was revealed. It has been established that the ecosystem of the city lake Kenon is experiencing a significant anthropogenic load (5 points — the critical quality of the aquatic environment) and it continues to increase towards the deterioration of the habitat.

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