scholarly journals Response of soil microflora to impact of heavy metals in zones of influence of railway transport

2016 ◽  
Vol 24 (1) ◽  
pp. 151-156
Author(s):  
N. Bobryk ◽  
M. Kryvtsova ◽  
V. Nikolajchuk ◽  
I. Voloshchuk

Monitoring research on the areas intensively and continuously affected by technogenic loading has remained topical until nowadays. The soil as a basic component of many ecosystems, including the structure of its microbial cenoses, remains an informative index of a system’s overall stability. The areas affected by railway transport have been scarcely studied. Due to the above, the aim of this work has been to establish the transformation regularities of soil microbial cenoses of territories close to railways and to establish the groups of microorganisms that are a sensitive criterion of technogenic vehicular influence. For the purpose of microbiological research, soil samples were taken at different distances from the railway track (0, 25, 50, 100 and250 m) within five monitoring sections of the Tchop – Uzhhorod – Sambor railway (in the territory of Zakarpatska oblast). The number of ecological trophic groups was identified by means of inoculation on nutrient media using the method of serial dilution of soil suspensions. The research showed that in all types of soils that were adjacent to railway tracks, the number of ammonifiers and spore microbiota was high due to the high content of heavy metals (beyond the background levels). Besides, the bacterial microflora on beef-extract agar was characterized by homogeneity with domination of enteric bacteria and spore bacteria. Simultaneously, the numbers of nitrogen-fixing microorganisms, micromycetes, oligonitrophils, amylolytic and pedotrophic microflorae were shown to be low compared to the control. Farther from the railway track, pigmental species of bacteria appeared in the soil samples, attesting to the activity of self-purification processes. Correlation analysis of the data showed that the soil microbiota of the railway-side areas was undergoing changes as affected by heightened contents of heavy metals. Existence of medium and close connections was established between the number of microorganisms of ecological trophic groups and the content of acid-soluble lead forms at the levels of 0.72–1.72 maximum permissible concentrations. It was the nitrogen-fixing microorganisms and microscopic fungi that showed a fast response to heavy metals, which was an indication of their possible use as indicators of the ecological state of technogenically transformed soils. 

2018 ◽  
Vol 7 (1) ◽  
pp. 54-57
Author(s):  
Denis Alexandrovich Klyuchnikov ◽  
Svetlana Aleksandrovna Platonova ◽  
Elena Vasilievna Soboleva

The paper studies heavy metals in soils of the train removal station Ussuriysk JSC Russian Railways. An adverse effect of railway transport on adjacent territories is shown. Railway transport and subjects of its support are permanent sources of pollution. Long-term emissions to the air are reflected by essential accumulation of tocsins in the top horizons of the soil. The authors reveal the amount of heavy metals in soils of the train removal station Ussuriysk JSC Russian Railways. To identify the coefficient of heavy metals concentration in soil samples of 8 trial areas of technogenic and anthropogenic zones of the city were analyzed. To identify local technogenic anomalies concentration coefficients were calculated. The authors concluded that the territory of the train removal station Ussuriysk JSC Russian Railways was very polluted. The south of the railway station is characterized by an average pollution level. The authors revealed high concentrations of Zn, Mn, Fe, Cu and Pb in soils of the trial sites with a high transport loading.


2004 ◽  
Vol 380 (2) ◽  
pp. 284-292 ◽  
Author(s):  
Belen Bello Rodriguez ◽  
John A Bolbot ◽  
Ibtisam E Tothill

2021 ◽  
Vol 11 (15) ◽  
pp. 7099
Author(s):  
Inkyeong Moon ◽  
Honghyun Kim ◽  
Sangjo Jeong ◽  
Hyungjin Choi ◽  
Jungtae Park ◽  
...  

In this study, the geochemical properties of heavy metal-contaminated soils from a Korean military shooting range were analyzed. The chemical behavior of heavy metals was determined by analyzing the soil pH, heavy metal concentration, mineral composition, and Pb isotopes. In total, 24 soil samples were collected from a Korean military shooting range. The soil samples consist of quartz, albite, microcline, muscovite/illite, kaolinite, chlorite, and calcite. Lead minerals, such as hydrocerussite and anglesite, which are indicative of a transformation into secondary mineral phases, were not observed. All soils were strongly contaminated with Pb with minor concentrations of Cu, Ni, Cd, and Zn. Arsenic was rarely detected. The obtained results are indicated that the soils from the shooting range are contaminated with heavy metals and have evidences of different degree of anthropogenic Pb sources. This study is crucial for the evaluation of heavy metal-contaminated soils in shooting ranges and their environmental effect as well as for the establishment of management strategies for the mitigation of environmental risks.


2021 ◽  
Vol 80 (5) ◽  
Author(s):  
Lasun Tunde Ogundele ◽  
Oladotun Afolabi Oluwajana ◽  
Abimbola Chris Ogunyele ◽  
Samuel Oluwagbenga Inuyomi

HortScience ◽  
2011 ◽  
Vol 46 (9) ◽  
pp. 1308-1313 ◽  
Author(s):  
Ugur Bilgili ◽  
F. Olcay Topac-Sagban ◽  
Irfan Surer ◽  
Nejla Caliskan ◽  
Pervin Uzun ◽  
...  

The objectives of the present study were to determine the effects of the rate and timing of the application of sun-dried wastewater sludge from a food processing company's wastewater system on turfgrass growth and quality. The results were compared with those obtained with ammonium nitrate, and changes in the concentration of heavy metals and the presence of fecal coliform in turf soils after sun-dried wastewater sludge application were determined. The rate and the timing of sun-dried wastewater sludge and ammonium nitrate applications affected the turf color, quality, and clipping yield. Monthly fertilization resulted in a more uniform color and turf quality than infrequent spring and fall fertilization. Compared with the background values of base soils, heavy metals did not accumulate in sun-dried wastewater sludge-amended soils over the test period. Fecal coliform was not detected in sludge-amended soil samples, indicating that bacteria regrowth did not occur during the study period.


2016 ◽  
Vol 227 (10) ◽  
Author(s):  
Cácio Luiz Boechat ◽  
Filipe Selau Carlos ◽  
Clésio Gianello ◽  
Flávio Anastácio de Oliveira Camargo

2009 ◽  
Vol 66 (3) ◽  
pp. 361-367 ◽  
Author(s):  
Gustavo Souza Valladares ◽  
Otávio Antônio de Camargo ◽  
José Ruy Porto de Carvalho ◽  
Alessandra Maria Cia Silva

Agricultural management with chemicals may contaminate the soil with heavy metals. The objective of this study was to apply Principal Component Analysis and geoprocessing techniques to identify the origin of the metals Cu, Fe, Mn, Zn, Ni, Pb, Cr and Cd as potential contaminants of agricultural soils. The study was developed in an area of vineyard cultivation in the State of São Paulo, Brazil. Soil samples were collected and GPS located under different uses and coverings. The metal concentrations in the soils were determined using the DTPA method. The Cu and Zn content was considered high in most of the samples, and was larger in the areas cultivated with vineyards that had been under the application of fungicides for several decades. The concentrations of Cu and Zn were correlated. The geoprocessing techniques and the Principal Component Analysis confirmed the enrichment of the soil with Cu and Zn because of the use and management of the vineyards with chemicals in the preceding decades.


ÈKOBIOTEH ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 195-202
Author(s):  
A.I. Safonov ◽  
◽  
A.Z. Glukhov ◽  

From the data on the structural heterogeneity of indicator plants (Berteroa incana (L.) DC., Plantago major L., Reseda lutea L., Echium vulgare L., and Capsella bursa-pastoris (L.) Medik.) under unfavorable environmental conditions of Donbass selected their most informative characteristics for a general assessment of the level of anthropogenic load on local ecotopes. Empirical criteria were calculated as a result of correlation analysis between data sets on the content of heavy metals in soil samples and the values of phytoindication indices.


2002 ◽  
Vol 11 (4) ◽  
pp. 285-300 ◽  
Author(s):  
V. MÄNTYLAHTI ◽  
P. LAAKSO

Increasing concentrations of arsenic and heavy metals in agricultural soils are becoming a growing problem in industrialized countries. These harmful elements represent the basis of a range of problems in the food chain, and are a potential hazard for animal and human health. It is therefore important to gauge their absolute and relative concentrations in soils that are used for crop production. In this study the arsenic and heavy metal concentrations in 274 mineral soil samples and 38 organogenic soil samples taken from South Savo province in 2000 were determined using the aqua regia extraction technique. The soil samples were collected from 23 farms.The elements analyzed were arsenic, cadmium, chromium, copper, mercury, nickel, lead and zinc. The median concentrations in the mineral soils were:As 2.90 mg kg –1, Cd 0.084 mg kg –1, Cr 17.0 mg kg –1, Cu 13.0 mg kg –1, Hg 0.060 mg kg –1, Ni 5.4 mg kg –1, Pb 7.7 mg kg –1, Zn 36.5 mg kg –1. The corresponding values in the organogenic soils were:As 2.80 mg kg –1, Cd 0.265 mg kg –1, Cr 15.0 mg kg –1, Cu 29.0 mg kg –1, Hg 0.200 mg kg –1, Ni 5.9 mg kg –1, Pb 11.0 mg kg –1, Zn 25.5 mg kg –1. The results indicated that cadmium and mercury concentrations in the mineral and organogenic soils differed. Some of the arsenic, cadmium and mercury concentrations exceeded the normative values but did not exceed limit values. Most of the agricultural fields in South Savo province contained only small amounts of arsenic and heavy metals and could be classified as “Clean Soil”. A draft for the target values of arsenic and heavy metal concentrations in “Clean Soil” is presented.;


2013 ◽  
Vol 02 (01) ◽  
pp. 25-28 ◽  
Author(s):  
Abdulmajeed Bashir Mlitan ◽  
Adel Imhemed Alajtal ◽  
Abdullah Mohamed Alsadawy

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