Preliminary assessment of heavy metals in water, sediment and macrophyte (Lemna minor) collected from Anchar Lake, Kashmir, India

Abstract The exacerbated production of solid residues represents a major problem in the management and handling of urban wastes. The by-product of stored municipal and industrial solid waste production is landfill leachate. Leachate is characterized by a high concentration of organic compounds, ammonia, and the presence of heavy metals. Because of its composition, this kind of wastewater can cause serious environmental pollution and should be treated to reduce its toxic effects. Increasingly, the interest is directed to the application of the ANAMMOX (anaerobic ammonium oxidation) process for the landfill leachate treatment. In this study, for the first time, the effect of treatment with the ANAMMOX process on the toxicity of leachate was investigated. Based on the research performed in this study, it could be stated that the untreated landfill leachate from the municipal landfill and the influent of the ANAMMOX reactor present phytotoxicity to Lemna minor, due to a correlation of high concentrations of organic compounds, heavy metals, such as Cd2+, Cu2+, Zn2+, and the presence of an unionized form of ammonia (NH3). The results of the Allium cepa test demonstrated that the treatment was not efficient in eliminating the genotoxic substances that are responsible for the mutagenic potential in the effluent. This article has been made Open Access thanks to the kind support of CAWQ/ACQE (https://www.cawq.ca).

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The quality of the sperm of red breeds bulls of OAO Barnaulskoe breeding enterprise and its resistance to cryopreservation

Bulletin of NSAU (Novosibirsk State Agrarian University) ◽

10.31677/2072-6724-2021-58-1-92-100 ◽

2021 ◽

pp. 92-100

Author(s):

A. I. Zheltikov ◽

T. V. Konovalova ◽

O. I. Sebezhko ◽

V. V. Ilyin ◽

P. N. Palchikov ◽

...

Keyword(s):

Heavy Metals ◽

Correlation Coefficient ◽

Rank Correlation ◽

Preliminary Assessment ◽

Breeding Programs ◽

Research Results ◽

Spearman’S Rank Correlation ◽

Spearman’S Rank Correlation Coefficient ◽

Selection Of

The characteristic of bulls-producers of red breeds of OAO Barnaulskoe breeding enterprise on the quality of sperm and its resistance to cryopreservation are presented. The breeding enterprise has examined samples of water, soil, feed for the content of heavy metals. In the studied samples, no excess of the LOC was found. The research results were processed on a PC using population statistics methods. Angler bulls produced the largest amount of ejaculates unsuitable for cryopreservation. It is 20.6%. According to this indicator, they surpassed the producers of red Danish and red steppe breeds by 4.1-7.8%. The animals of the latter breed showed the smallest amount (1.7%) of ejaculates rejected after defrost. In Angler bulls, this indicator was 5.95%, in red Danish bulls it was 2.95%, which is 3.52 and 1.75 times higher than in red steppe breeders (P <0.01-0.001). Significant differences were established between individual bulls of the red steppe breed in the number of ejaculates rejected before cryopreservation (2.84-22.29%) and after defrost (0-7.09%). The differences between breeds in the frequency of rejected ejaculates before freezing and after cryopreservation indicate a certain role of heredity in the resistance of animals for these indicators. Spearman’s rank correlation coefficient between these traits was 0.312. It indicates the possibility of preliminary assessment and selection of bulls according to the first indicator. But the final assessment of the bull-producers can be made by the frequency of rejected ejaculates after thawing. We propose to consider the issue of additional accounting in breeding programs for the resistance of the seed of bulls-producers to cryopreservation.

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Preliminary assessment of heavy metals in surface water and sediment in Nakuvadra-Rakiraki River, Fiji using indexical and chemometric approaches

Journal of Environmental Management ◽

10.1016/j.jenvman.2021.113517 ◽

2021 ◽

Vol 298 ◽

pp. 113517

Author(s):

Satendra Kumar ◽

Abu Reza Md Towfiqul Islam ◽

Md Hasanuzzaman ◽

Roquia Salam ◽

Rahat Khan ◽

...

Keyword(s):

Heavy Metals ◽

Surface Water ◽

Preliminary Assessment ◽

Water And Sediment

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Method of Biological Wastewater Final Treatment Using Bioremediation in Northern Khabarovskiy Krai

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1051.505 ◽

2014 ◽

Vol 1051 ◽

pp. 505-510 ◽

Cited By ~ 1

Author(s):

Konstantin Gula ◽

Liudmila Krupskaya ◽

Eugene Shevkun ◽

Valentina Zvereva

Keyword(s):

Heavy Metals ◽

Biological Treatment ◽

Chemical Method ◽

Gold Mining ◽

Lemna Minor ◽

Processing Plant ◽

Waste Waters ◽

Mining Enterprise ◽

Final Treatment ◽

Metals Extraction

The article presents the results of experimental research for final treatment of gold mining enterprise waste waters using water lentil (Lemna minor) of (Lemna L. ) genus, (Lemnactat S.F. Gray) family, and common red grass (Phrágmites austrális (Cav.) Trin. Ex Steud.). It was shown that a level of heavy metals extraction, cyanides and rhodanides from the industrial waters of gold processing plant is greatly higher in comparison with chemical method used at the plant. The proposals are given to the gold mining enterprise to establish a pilot plant for final biological treatment, its novelty is confirmed by the Patent of Russian Federation of 20.01.2014.

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Chlorophyll Fluorescence in Assessing the Effect of Heavy Metal Compounds on Aquatic Organisms

The Bulletin of Irkutsk State University Series Biology Ecology ◽

10.26516/2073-3372.2021.36.24 ◽

2021 ◽

Vol 36 ◽

pp. 24-36

Author(s):

G. A. Sorokina ◽

◽

T. L. Shashkova ◽

M. A. Subbotin ◽

E. S. Stravinskene ◽

...

Keyword(s):

Heavy Metals ◽

Chlorophyll Fluorescence ◽

Copper Ions ◽

Lemna Minor ◽

Potassium Dichromate ◽

Chlorophyll Concentration ◽

Photosynthetic Apparatus ◽

Aquatic Organisms ◽

Delayed Fluorescence ◽

Short Period

Fluorescent methods allow to improve the bioassays because of time effectiveness. These methods give information on chlorophyll concentration and plant photosynthetic apparatus activity in a short period of time. The aim of this study was to estimate the sensitivity of aquatic organisms to heavy metals using chlorophyll fluorescent methods. The test-organisms of different taxonomic categories were used, including thermophilic strain Chlorella vulgaris Beijer, aquatic plants Elodea сanadensis Michx. and Lemna minor L., crustacean Daphnia magna Straus. Fluorimeter “Foton 10” developed in SibFU was employed to measure prompt and delayed fluorescence (PF and DF respectively). The experiments revealed that copper ions affected DF of chlorella in 30 minutes, resulting in a 50% decrease of relative indicator of DF (RIDF) in the range of concentrations 0.005-0.01 mg/l of Cu2+. Measuring the DF of duckweed was less time-consuming compared to registration the changing of morphological parameters when the plants were exposed to heavy metals. Copper, cadmium, and nickel exposures were found to decrease the RIDF of duckweed by more than 50% at the concentrations of 0.17, 0.31, and 1.89 mg/l respectively. However, zinc had no significant effect on the RIDF of Lemna minor in the range of 0.1-8 mg/l of Zn2+ within 24 h of exposure time. The analysis of fluorescent parameters of Canadian elodea showed the possibility of using the plant as a sorbent during the bioremediation of aquatic environments from heavy metals. Registration of chlorophyll fluorescence allowed revealing the toxic effects of negligible concentrations of heavy metals in experiments with the feeding rate of daphnids. The median effective concentrations (EC50) were 0.002, 0.02, 0.4, and 0.25 mg/l of Cd2+, Cu2+, Zn2+, and potassium dichromate respectively. This makes it possible to obtain information on the effects of pollution in the early stages of exposure and in a shorter time. Thus, the use of chlorophyll fluorescence in biomonitoring the state of the aquatic environment makes it possible to more quickly respond to changes in the ecological situation in water bodies.

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Impact of vehicular traffic on the accumulation of metals by plants in the territory of Lviv

Visnyk of Lviv University Biological series ◽

10.30970/vlubs.2020.82.08 ◽

2020 ◽

pp. 101-109

Author(s):

A. Polishchuk ◽

◽

M. Lesiv ◽

H. Antonyak ◽

◽

...

Keyword(s):

Heavy Metals ◽

Aquatic Macrophyte ◽

Lemna Minor ◽

Urban Ecosystem ◽

Middle Part ◽

Traffic Load ◽

Traffic Density ◽

Vehicular Traffic ◽

Traffic Intensity ◽

Accumulation Of Metals

The study was aimed at investigating the effect of traffic load on the accumulation of heavy metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) by moss gametophytes (Brachythecium rutabulum and Pylaisia polyantha) and aquatic macrophyte Lemna minor in the territory of the city of Lviv (Ukraine). In the course of the study, five sites were selected: site 1 in the territory of the Stryiskyi Park, which was used as a control one, and sites 2–5, in which the traffic intensity was analyzed and plant samples were collected. Sites 2 and 3 were selected in the middle and end parts of Stryiska Street, respectively, site 4 was located near the junction of Lychakivska and Pasichna streets, and site 5 was chosen in the immediate vicinity of Khortytska Street. Gametophytes of mosses B. rutabulum and P. polyantha were collected at sites 1–4 and analyzed for metals content; two ponds were selected at sites 2 and 5, respectively, and metal concentrations were analyzed in water and in the samples of L. minor. Metal concentrations were determined using a Selmi C-115PK atomic absorption spectrometer. According to observations, the daily traffic intensity at sites 2–4 was high; at the same time, site 5 was characterized by low traffic intensity. It was found that at sites 2–4 with heavy vehicular traffic, the accumulation levels of Mn, Pb, and Zn in gametophytes of both species of mosses and Cu in gametophyte of B. rutabulum were significantly higher compared to the control site in Stryiskyi Park. Significantly higher concentrations of Cr, Cu, Fe, Pb and Zn were found in the water of the pond located at site 2 with a high level of transport load (the middle part of Stryiska Street) compared to the pond at site 5, where the level of transport load was negligible; samples of L. minor from this reservoir were characterized by a higher content of Cr, Fe, and Zn compared to the pond at site 5. Investigating the accumulation of metals in L. minor, the highest values of bioaccumulation factors were found for Mn, Fe, and Zn. The obtained results show the bioindication potential of the plants Brachythecium rutabulum, Pylaisia polyantha and Lemna minor, and suggest that these species can be used to assess environmental pollution by heavy metals in the urban ecosystem of Lviv and in other areas with high traffic density.

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Bioconcentration of heavy metals in aquatic macrophytes of South Urals region lakes

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d190140 ◽

2018 ◽

Vol 19 (1) ◽

pp. 296-302 ◽

Cited By ~ 3

Author(s):

TATYANA G. KRUPNOVA ◽

IRINA V. MASHKOVA ◽

ANASTASIYA M. KOSTRYUKOVA ◽

NIKITA O. EGOROV ◽

SVETLANA V. GAVRILKINA

Keyword(s):

Heavy Metals ◽

Aquatic Macrophytes ◽

Lemna Minor ◽

South Urals ◽

Plant Leaves ◽

High Concentration ◽

High Accumulation ◽

Metal Compounds ◽

Treated Sewage ◽

Metal Ratio

Krupnova TG, Mashkova IV, Kostryukova AM, Egorov NO, Gavrilkina SV. 2018. Bioconcentration of heavy metals in aquatic macrophytes of South Urals region lakes. Biodiversitas 19: 296-302. This paper studies bioconcentration of heavy metals in macrophytes. High concentration of heavy metal compounds in the lakes of South Ural is natural. Moreover, some of the South Ural lakes are polluted by heavy metals that get into the water together with partly treated sewage of ferrous and non-ferrous industries as well as mining. The paper analyzes similarities and differences of macrophyte communities in six lakes: Bolshoye Miassovo, Bolshoy Ishkul, Bolshoy Tatkul, Argayash, Savelkul, Baraus. In our research, we determined species diversity for each lake. Potamogeton lucens L. and Lemna minor L. were found in all the studied lakes, and the concentrations of heavy metals were studied in their leaves. Such metals as Fe, Mn, Cu, Zn were found in macrophytes. We obtained a metal ratio Mn <Fe<Cu<Zn in plant leaves. High accumulation of Fe, Cu, Zn was observed in Lemna while Mn accumulates equally. Metals bioconcentration factors (BCFs) were calculated

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