Rapid In Situ Biomonitoring of Subsoil Contamination by Applying an Algae-Soaked Disc Seeding Assay

Nam, Sun-Hwa; Kwak, Jin Il; An, Youn‐Joo

doi:10.3390/app11062463

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…Thus, the change in the state of soil biota caused by AgNPs can serve as an indicator of any adverse impact that AgNPs have on soil quality and fertility. Biological indicators are often used in monitoring soil contamination with silver [14,15]. There are studies in the literature in which a wide range of doses of AgNPs has been studied for individual biological indicators; however, such a comprehensive study devoted to studying the effects of different concentrations (0.1, 0.5, 1, 5, 10, 50, and 100 mg/kg) of AgNPs on a wide range of biological indicators will be conducted for the first time.…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicity of AgNPs according to the state of biota

Tsepina,

Kolesnikov,

Minnikova

et al. 2024

BIO Web Conf.

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The work objective is to evaluate the ecotoxicity of silver nanoparticles (AgNPs) according to the state of the biota of Haplic Chernozems Calcic. Contamination of Haplic Chernozems Calcic with 10 nm AgNPs in concentrations of 0.1, 0.5, 1, 5, 10, 50, and 100 mg/kg was simulated in laboratory conditions. In this study, biodiagnostical methods were used to assess the ecotoxic effect of AgNPs on soil biota: the activity of catalase, dehydrogenases, invertase, phosphatase, urease, the total number of bacteria, the Azotobacter sp. abundance, germination, and length of radish roots. The response of soil biota to exposure to AgNPs was assessed by the difference between the values in contaminated and uncontaminated soil. It was found that the more silver nanoparticles were introduced into the soil, the stronger the ecotoxic effect on the biota. The highest sensitivity degree to contamination of Haplic Chernozems Calcic with AgNPs was recorded for the total number of bacteria. The critical value of the AgNPs content in Haplic Chernozems Calcic, which is 0.4 mg/kg has been developed.

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Section: Introductionmentioning

confidence: 99%

Ecotoxicity of AgNPs according to the state of biota

Tsepina,

Kolesnikov,

Minnikova

et al. 2024

BIO Web Conf.

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“…The presence of high concentrations of silver, bismuth, tellurium, and thallium in the soil has a direct effect on the activity of soil enzymes, the abundance and diversity of soil bacteria, and plant growth and development. The effect of silver soil pollution has been studied on a wide range of biological indicators [20,21]: decrease of soil enzyme activity [22,23], reduction of plant root length [24], reduction of species diversity, and abundance of soil bacteria [25,26]. Under the influence of bismuth soil pollution, the activity of dehydrogenases in soil ecosystems is inhibited [27].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Ecotoxicity of Ag, Bi, Te and Tl According to the Biological Indicators of Haplic Chernozem

et al. 2022

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Soil contamination with such rare heavy metals as silver (Ag), bismuth (Bi), tellurium (Te), and thallium (Tl) leads to disruption of its agricultural and ecological functions. Each of these rare heavy metals has a different level of soil toxicity, which affects the ecological state of the soil and its recovery degree estimated by biological indicators. The work objective is to assess the ecotoxicity of oxides and nitrates of silver, bismuth, tellurium, and thallium by biological indicators of Haplic Chernozem. Under the conditions of a laboratory simulation experiment, silver, bismuth, tellurium, and thallium were introduced into the samples of soil. The ecological state of the soil for each incubation period was assessed by the activity of soil enzymes (catalase and dehydrogenases), the intensity of seed development in polluted soil (the length of shoots and roots of winter wheat), and microbiological indicators (the total number of bacteria and Azotobacter sp. abundance). For 90 days, when contaminated with oxides of silver, bismuth, tellurium, and thallium, the most sensitive biological indicator was the length of wheat roots; when contaminated with nitrates, the total number of bacteria was the most sensitive biological indicator. The most informative biological indicator for contamination with both chemical forms of rare elements (silver, bismuth, tellurium, and thallium) was the Azotobacter sp. abundance. The most ecotoxic elements among those studied were thallium and tellurium, both in the form of oxides and nitrates. The results of the study may be useful for biomonitoring and diagnostics of the state of soils contaminated with silver, bismuth, tellurium, and thallium.

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Perspectives on microalgae as model organisms toward the standardization of soil algal toxicity test methods

Nam

2021

Comparative Biochemistry and Physiology Part C: Toxicology &

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Rapid In Situ Biomonitoring of Subsoil Contamination by Applying an Algae-Soaked Disc Seeding Assay

Cited by 4 publications

References 35 publications

Ecotoxicity of AgNPs according to the state of biota

Ecotoxicity of AgNPs according to the state of biota

Assessment of the Ecotoxicity of Ag, Bi, Te and Tl According to the Biological Indicators of Haplic Chernozem

Perspectives on microalgae as model organisms toward the standardization of soil algal toxicity test methods

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