HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

scholarly journals Total phosphorus and organic matter content in bottom sediments of lake under restoration measures with iron treatment

2010 ◽  
Vol 10 (3-4) ◽  
pp. 139-145 ◽  
Author(s):  
Katarzyna Kowalczewska-Madura ◽  
Renata Dondajewska ◽  
Ryszard Gołdyn
Keyword(s):  
Organic Matter ◽  
Lake Sediments ◽  
Total Phosphorus ◽  
Bottom Sediments ◽  
Organic Matter Content ◽  
Dry Weight ◽  
Matter Content ◽  
Iron Treatment ◽  
Iron Sulphate ◽  
Restoration Measures

Total phosphorus and organic matter content in bottom sediments of lake under restoration measures with iron treatmentRusałka Lake is a shallow, man-made, strongly eutrophicated reservoir, being a place of recreational activities for Poznan citizens. Restoration measures with the use of iron sulphate were conducted in years 2006-2007. Phosphorus and organic matter concentrations in lake sediments were analyzed in years 2005-2007 at two research stations (profundal and littoral) to determine its changes under the influence of restoration. Greater phosphorus concentrations were noted in profundal (max 1.55 mg P g-1dry weight (DW)) than in littoral (max 0.98 mg P g-1DW). An increase of P amount in sediment was observed after iron treatment. Among phosphorus fractions Res-P dominated, i.e. phosphorus biologically unavailable for organisms. Organic matter content reached 23.1% in profundal, while 14.8% in littoral. Its amount decreased in following years.

scholarly journals Woodland Ponds as an Important Habitat of Hippeutis Complanatus (Linnaeus 1758) Occurrence - Effect of Environmental Factors and Habitat Preferences

2014 ◽  
Vol 33 (2) ◽  
Author(s):  
Aneta Spyra
Keyword(s):  
Organic Matter ◽  
Environmental Factors ◽  
Bottom Sediments ◽  
Habitat Preferences ◽  
Organic Matter Content ◽  
Matter Content ◽  
Freshwater Snails ◽  
Fallen Leaves ◽  
Woodland Ponds ◽  
Important Habitat

AbstractSpyra A. Woodland ponds as an important habitat of Hippeutis complanatus (Linnaeus 1758) occurrence - effect of environmental factors and habitat preferences. Ekológia (Bratislava), Vol. 33, No. 2, p. 101-115, 2014.In industrial areas, woodland ponds are refuges of biological diversity. The impact of environmental factors such as the physico-chemical properties of water, organic matter content in bottom sediments and various types of substratum on the occurrence of Hippeutis complanatus were assessed. In Poland, it is considered to be a species with an established but unspecified risk, deserving the status of endangered species due to the decline of wetland environments. A Canonical Correspondence Analysis (CCA) revealed associations between the distribution patterns of freshwater snails species and the concentration of nitrates (NO3) and calcium (Ca) as well as pH and the organic matter content in the bottom sediments. Based on statistical relationships, results of study suggest that the kind of substratum (Typha latifolia remains, Phragmites australis remains, fallen leaves of waterside trees) has an impact on the occurrence of freshwater snails including Hippeutis complanatus for which the preferred substratum is the fallen leaves of waterside trees and sites with a high content of organic matter in bottom sediments. The study has shown that isolated water bodies located in forest complexes can be refuges for species that occur in small numbers in other types of aquatic environments.

scholarly journals Characteristics of Phosphorus Adsorption and Release in Different Types of Sediments

2020 ◽  
Vol 8 (05) ◽  
pp. 342-354
Author(s):  
Pengqiang Yang ◽  
Huanghe ◽  
Rujun Gao
Keyword(s):  
Heavy Metal ◽  
Particle Size ◽  
Organic Matter ◽  
Metal Ion ◽  
Organic Matter Content ◽  
Matter Content ◽  
Heavy Metal Ion ◽  
Phosphorus Adsorption ◽  
Different Types ◽  
Adsorption And Release

Taking different types of sediments as the research object, this research studied the adsorption and release characteristics of phosphorus under different conditions of different temperatures, coexisting heavy metal ion system, organic matter content and sediment particle size. Through used correlation analysis and principal component analysis, it discussed the influence of various factors on the adsorption and release of phosphorus in sediments. The results show that the adsorption of phosphorus by five different types of sediments from different sources reached saturation equilibrium in about 10 hours, and the increasing rates of 0 ℃, 15 ℃ and 30 ℃ are 17.5% ~ 23.7% and 18.2% ~ 38.3%, respectively.  The addition of coexisting heavy metal ion solution accelerated the adsorption of phosphorus in the sediment and reduced the total amount of phosphorus adsorption, that is, heavy metal ions inhibited the adsorption of phosphorus in the sediment; the presence of organic matter in the sediment would reduce its adsorption of phosphorus , Taihu farm and wetland sampling points have the largest sediment organic matter content. Compared with the other three points, the adsorption of phosphorus of these two  points accounted for 20.6% and 22.1%; the adsorption and release of phosphorus by sediment increased with the decrease of particle size. The maximum release rate was 5.216mg/kg-1·h-1. The result of principal component analysis shows that the order of influence on the adsorption and release of phosphorus by sediments is temperature> disturbance> organic matter content> heavy metal ion influence> particle size of sediments.

scholarly journals ANALISIS KESUBURAN PERAIRAN WADUK JATIBARANG BERDASARKAN DISTRIBUSI DAN KELIMPAHAN BAKTERI HETEROTROFIK

2017 ◽  
Vol 5 (4) ◽  
pp. 443-452
Author(s):  
Siti Nur Hidayah ◽  
Niniek Widyorini ◽  
Pujiono Wahyu Purnomo
Keyword(s):  
Organic Matter ◽  
Flood Control ◽  
Heterotrophic Bacteria ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Temporal Distribution ◽  
Matter Content ◽  
Plate Count ◽  
Total Organic Matter ◽  
Total Plate Count

ABSTRAKWaduk Jatibarang terletak di Kecamatan Gunungpati, Kota Semarang. Waduk tersebut digunakan sebagai pengendali banjir, tempat pariwisata, kegiatan menangkap ikan, dan rencana akan dibuat sebagai sumber air bersih melalui PDAM. Pemanfaatan waduk untuk berbagai keperluan kemungkinan dapat menurunkan kualitas air dari waduk tersebut. Penelitian ini mengkaji kesuburan perairan Waduk Jatibarang berdasarkan distribusi dan kelimpahan bakteri heterotrofik. Bakteri heterotrofik berperan penting dalam sistem perairan sebagai perombak dan meremineralisasi bahan-bahan organik menjadi komponen anorganik sederhana. Tujuan dari penelitian ini adalah untuk mengetahui distribusi kelimpahan bakteri heterotrofik, kandungan bahan organik total, hubungan kelimpahan bakteri heterotrofik dengan bahan organik total, dan status kesuburan waduk Jatibarang. Metode yang digunakan dalam penelitian ini adalah metode deskriptif bersifat studi kasus.  Sampling dilakukan pada tanggal 27 April dan 11 Mei 2016 di lima (5) stasiun dengan kedalaman 1 meter. Penghitungan kelimpahan bakteri menggunakan metode Total Plate Count (TPC). Pengujian kandungan bahan organik total menggunakan metode Titrimetri Permanganat SNI 06-6989.22-2004. Hasil pengamatan menunjukkan distribusi spasial-temporal bakteri heterotrofik fluktuatif dan relatif tinggi, dengan kelimpahan berkisar (45 – 131) x 105 cfu/ml. Kandungan bahan organik total berkisar 11,771 - 21,883 mg/l. Hubungan antara bakteri heterotrofik dengan bahan organik total yaitu hubungan yang terbalik menunjukkan tidak adanya hubungan antara keduanya. Status kesuburan perairan Waduk Jatibarang berdasarkannilai kelimpahan bakteri heterotrofik (45 – 131) x 105cfu/ml > (22 – 120) x 105 cfu/ml dan kandungan bahan organik total 11,771 – 21,883 mg/l perairan bersifat eutrofik. Kata kunci: Waduk Jatibarang; bakteri heterotrofik; bahan organik total; eutrofik ABSTRACTJatibarang Reservoirs located in District Gunungpati, Semarang. The reservoir are used as flood control, the tourism, fishing activities, and the plan will be created as a source of clean water through the taps. Utilization of reservoirs for various purposes may reduce the quality of the water reservoir. This study examines the productivity waters Jatibarang Reservoir based on the distribution and abundance of heterotrophic bacteria. Heterotrophic bacteria play an important role in aquatic systems as to change and remineralize organic materials into simple inorganic components. The purpose of this study was to determine the distribution of the abundance of heterotrophic bacteria, total organic matter content, abundance of heterotrophic bacteria relationships with total organic matter and productivity status Jatibarang Reservoirs. The method used in this research is descriptive case study. The sampling was conducted on April 27 and May 11, 2016 in five (5) stations with a depth of 1 meter. Calculation of the abundance of bacteria using Total Plate Count (TPC). Tests using a total organic matter content titrimetric method SNI 06-6989.22-2004 permanganate. The results showed the spatial-temporal distribution of heterotrophic bacteria volatile and relatively high, with an abundance range (45-131) x 105cfu/ml. Total organic matter content ranges (11.771 - 21.883) mg/l. The relationship between of heterotrophic bacteria with total organic material that is an inverse relationship showed no relationship between both. The productivity status of the dam water Jatibarang based on the abundance of heterotrophic bacteria (45-131) x 105cfu/ml > (22-120) x 105cfu/ml and organic matter content of the total 11.771 - 21.883 mg/l  waters are eutrophic.Keywords: Jatibarang Reservoir; heterotrophic bacteria; total organic matter; eutrophic

scholarly journals Analysis of cultivable aerobic bacteria isolated from bottom sediments in the Wijdefjorden region, Spitsbergen

2011 ◽  
Vol 32 (2) ◽  
pp. 181-195 ◽  
Author(s):  
Iwona Konieczna ◽  
Barbara Wojtasik ◽  
Marek Kwinkowski ◽  
Dorota Burska ◽  
Kamil Nowiński ◽  
...  
Keyword(s):  
Organic Matter ◽  
Bottom Sediments ◽  
Dna Analysis ◽  
Organic Matter Content ◽  
Matter Content ◽  
Resistance Testing ◽  
Aerobic Bacteria ◽  
Growth Media ◽  
Sampling Station ◽  
Bacterial Strains

Analysis of cultivable aerobic bacteria isolated from bottom sediments in the Wijdefjorden region, SpitsbergenThe paper presents the first physicochemical and microbiological studies conducted in the northern area of Svalbard (Spitsbergen). Ten sediment samples were collected from the bottom of the longest fjord in the region, Wijdefjorden. Bottom sediments from ten lakes lo- cated along the shores of Wijdefjorden and Woodfjorden were also sampled. Organic matter content (LOI), water content, temperature, pH, and salinity of the sediments were determined. The quantity of aerobic bacteria cultured on various growth media at 4°C, 14°C, and 37°C ranged from 102to 106cfu/g of wet sediment mass, depending on the type of sampling station (fjord or lake). The number of bacteria did not correlate with organic matter content. Out of the 37 bacterial strains isolated from Wijdefjorden, 48% and 70% revealed ureolytic and proteolytic activity, respectively. The proportion of freshwater strains with ureolytic and proteolytic activitywas 32% and 55%, respectively. Antibiotic resistance testing indicated that bacterial strains from the bottom sediments of the lakes were resistant to 8 antibiotics (out of the 18 investigated). Possible sources of this resistance are discussed. Using 16S DNA analysis, bacterial isolates from the lakes were identified asPseudomonassp., whereas frequently occurring strains in bottom sediment of the fjord werePseudoalteromonassp.

scholarly journals Searching for the Correlation Between the Activity of Urease and the Content of Nickel in the Soil Samples: The Role of Metal Speciation

2020 ◽  
Vol 20 (4) ◽  
pp. 1904-1911
Author(s):  
Paweł Miśkowiec ◽  
Zofia Olech
Keyword(s):  
Organic Matter ◽  
Urease Activity ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Total Content ◽  
Matter Content ◽  
Soil Samples ◽  
Soil Urease ◽  
Positive Correlations

Abstract The purpose of this study was to verify the correlation between the activity of urease and the content of nickel in soil of temperate climate in relation to the land management. Moreover, the metal speciation was taken into account in order to search for the above-mentioned correlation. Arable lands, forested lands, and wastelands were analyzed. The basic soil parameters were determined such as pH, clay fraction content, and organic matter content. The speciation of nickel was studied by using BCR (Bureau Communitaire de Reference) sequential extraction procedure and flame atomic absorption spectrometry, while the urease activity was determined spectrophotometrically. The pseudo-total content of Ni in every sample was below 30 mg kg−1 of dry soil. The dominant form of nickel in the soil samples was the residual form. Although the urease activity varied slightly between the samples, the differences turned out to be statistically insignificant. However, the highly positive correlations between the urease activity, organic matter content, and the pseudo-total content of Ni were found and discussed. Moreover, the positive correlations between the urease activity and two geochemical forms of nickel, namely, active and residual form, were confirmed. The results of performed experiments prove that the method of land management does not significantly affect either the topsoil urease activity or the nickel distribution in the case of the extensive agriculture and forestry. However, the existence of at least two forms of the active soil urease was proposed. The first one―contained in the soil solution or loosely adsorbed on the soil particulates and the second one―strongly adsorbed onto the clay minerals. Also the complex role of the organic matter in protecting urease from external factors was presented. Finally, it was postulated that the nickel content in soil may be the indicator of the soil urease activity.

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