Prediction of Cd and Pb toxicity to Vibrio fischeri using biotic ligand-based models in soil

An, Jinsung; Jeong, Seulki; Moon, Hee Sun; Jho, Eun Hea; Nam, Kyoungphile

doi:10.1016/j.jhazmat.2011.11.085

Cited by 47 publications

(24 citation statements)

References 28 publications

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“…8. A comparison of K d (or EC 20 ) values indicated that the sensitivity thresholds rank as Hg(II) > As(V) > Cd(II), which is coherent with the graphical results (Table 5 and Fig. 6).…”

Section: Detection Of Heavy Metals and Pesticide Using Sodium Alginatsupporting

confidence: 85%

“…The time required for the retention of 80% relative light emission [(RLU) t /(RLU) 0 = 0.80, i.e. 20% decrease in luminescence] is referred as EC 20 and was calculated as per Eq. (4) ( Tables 5 and 6):…”

Section: Detection Of Heavy Metals and Pesticide Using Sodium Alginatmentioning

confidence: 99%

“…Therefore, bioluminescent bacteria have widely been used for monitoring environmental pollutants such as synthetic antibiotic sulphamethoxazole [11] and water quality [12][13][14][15] with high sensitivity through optical based sensing system [16,17], xenobiotics e.g. heavy metals [18][19][20][21] and pesticides [22,23].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of immobilized biophotonic beads consisting of Photobacterium leiognathi for the detection of heavy metals and pesticide

Ranjan

Rastogi

Thakur

2012

Journal of Hazardous Materials

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“…8. A comparison of K d (or EC 20 ) values indicated that the sensitivity thresholds rank as Hg(II) > As(V) > Cd(II), which is coherent with the graphical results (Table 5 and Fig. 6).…”

Section: Detection Of Heavy Metals and Pesticide Using Sodium Alginatsupporting

confidence: 85%

Section: Detection Of Heavy Metals and Pesticide Using Sodium Alginatmentioning

confidence: 99%

See 1 more Smart Citation

Development of immobilized biophotonic beads consisting of Photobacterium leiognathi for the detection of heavy metals and pesticide

Ranjan

Rastogi

Thakur

2012

Journal of Hazardous Materials

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“…The similarity in Ca and Cd binding constants suggests a similar competition potency of both divalent cations for binding to the biotic ligand sites on springtails. Such a competition effect has been shown before for Ca and Mg in V. fischeri [45]. It has been reported that divalent metals have the same tendency to bind to the ligands because of the negative electrical potential of the biotic ligand sites [46], and indications exist that Cd and Ca use the same uptake pathway through ion channels because of the similarity in their charge and ionic radius [39].…”

Section: Blm Validationmentioning

confidence: 59%

Influence of Ca and pH on the uptake and effects of Cd in Folsomia candida exposed to simplified soil solutions

Ardestani

Ortiz²,

Gestel³

2013

Enviro Toxic and Chemistry

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The present study sought to quantify the components of a biotic ligand model (BLM) for the effects of Cd on Folsomia candida (Collembola). Assuming that soil porewater is the main route of exposure and to exclude the effects of soil particles on metal availability, animals were exposed for 7 d to different Cd concentrations between 0.1 mM and 100 mM in simplified soil solutions at different Ca concentrations (0.2 mM, 0.8 mM, 3.2 mM, and 12.8 mM) or at different pH (5.0, 6.0, and 7.0). Higher Ca concentrations decreased the toxicity of Cd (adult survival) in test solutions, whereas toxicity was slightly lower at pH 7 and 6 than at pH 5, suggesting a mitigating effect of Ca and to a lesser extent pH on Cd toxicity to F. candida. Internal Cd concentrations in the animals increased with increasing exposure level but were significantly reduced by increasing Ca concentrations and were not significantly affected by pH. By using Langmuir isotherms, binding constants for Cd, Ca, and protons and the fraction of binding sites occupied by Cd were calculated and used to predict effects of Cd on survival. Predicted toxicity showed a good agreement with measured responses when Ca and pH were used as separate factors or combined together. The present study shows indications of protective effects of Ca but less of protons on the toxicity and uptake of Cd in F. candida on exposure to simplified soil solutions, which can be described using the principles of a biotic ligand model.

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“…2+ 및 Na (Jho et al, 2011;An et al, 2012). 본 연구에서는 다양한 토양 생물종에 대해 환경인자의 영향이 반영된 Cu의 급성독성 예측을 위해, 문헌조사를 통해 식물 6종 (Vitis vinifera(포도), Triticum aestivum(밀), Lycopersicon esculentum(토마토), Lactuca sativa(상추), Hordeum Table 1).…”

Section: Mgunclassified

Effect of Environmental Factors on the Determination of the Ecotoxicological Threshold Concentration of Cu in Soil Pore Water through Biotic Ligand Model and Species Sensitivity Distribution

Yu¹,

An²,

Jeong³

et al. 2017

Journal of Soil and Groundwater Environment

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Biotic ligand model (BLM) and species sensitivity distribution (SSD) were used to determine the site-specific Cu threshold concentration (5% hazardous concentration; HC5) in soil pore water. Model parameters for Cu-BLM were collected for six plants, one collembola, and two earthworms from published literatures. Half maximal effective concentration (EC 50 {Cu 2+ }), expressed as Cu 2+ activity, was calculated based on activities of major cations and the collected Cu-BLM parameters. The EC 50 {Cu 2+ } varied from 2 nM to 251 µM according to the variation in environmental factors of soil pore water (pH, major cation/anion concentrations) and the type of species. Hazardous activity for 5% (HA5) and HC5 calculated from SSD varied from 0.076 to 0.4 µg/L and 0.4 to 83.4 µg/L, respectively. HA5 and HC5 significantly decreased with the increase in pH in the region with pH less than 7 due to the decrease in competition with H + and Cu 2+. In the region with pH more than 7, HC5 increased with the increase in pH due to the formation of complexes of Cu with inorganic ligands. In the presence of dissolved organic carbon (DOC), Cu and DOC form a complex, which decreases Cu 2+ activity in soil pore water, resulting in up to 292-fold increase in HC5 from 0.48 to 140 µg/L.

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Prediction of Cd and Pb toxicity to Vibrio fischeri using biotic ligand-based models in soil

Cited by 47 publications

References 28 publications

Development of immobilized biophotonic beads consisting of Photobacterium leiognathi for the detection of heavy metals and pesticide

Development of immobilized biophotonic beads consisting of Photobacterium leiognathi for the detection of heavy metals and pesticide

Influence of Ca and pH on the uptake and effects of Cd in Folsomia candida exposed to simplified soil solutions

Effect of Environmental Factors on the Determination of the Ecotoxicological Threshold Concentration of Cu in Soil Pore Water through Biotic Ligand Model and Species Sensitivity Distribution

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