Toxicity of the 13 priority pollutant metals to Vibrio fisheri in the Microtox® chronic toxicity test

Hsieh, Chi-Ying; Tsai, Meng‐Hsiun; Ryan, David K.; Pancorbo, Oscar C.

doi:10.1016/s0048-9697(03)00451-0

Cited by 165 publications

(71 citation statements)

References 28 publications

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“…[51][52][53] The hardness values obtained for Leça river were normal for surface water and, therefore, the metals Fe, Hg and As contributed to global toxic eff ect. Nevertheless, Microtox® test is especially sensitive to several metals, such as Hg, Pb, Zn and Cu [54,55]; the toxicity of heavy metals is highly influenced by matrix eff ects, conditions and concentration, [56,57] The faecal coliforms in Leça river presented extremely high concentrations showing positive correlation with the V. fischeri toxic response probably due to competition between the bacteria, both Gram-negative, heterotrophic and facultative anaerobes. This competition might be for oxygen, which would influence the luminescence produced once its mechanism is intrinsically connected to the respiratory metabolism.…”

Section: Multiple Linear Regressionmentioning

confidence: 99%

Multiple linear and principal component regressions for modelling ecotoxicity bioassay response

Gomes

Pires

Figueiredo

et al. 2013

Environmental Technology

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The ecotoxicological response of the living organisms in an aquatic system depends on the physical, chemical and bacteriological variables, as well as the interactions between them. An important challenge to scientists is to understand the interaction and behaviour of factors involved in a multidimensional process such as the ecotoxicological response. With this aim, multiple linear regression (MLR) and principal component regression were applied to the ecotoxicity bioassay response of Chlorella vulgaris and Vibrio fischeri in water collected at seven sites of Leça river during five monitoring campaigns (February, May, June, August and September of 2006). The river water characterization included the analysis of 22 physicochemical and 3 microbiological parameters. The model that best fitted the data was MLR, which shows: (i) a negative correlation with dissolved organic carbon, zinc and manganese, and a positive one with turbidity and arsenic, regarding C. vulgaris toxic response; (ii) a negative correlation with conductivity and turbidity and a positive one with phosphorus, hardness, iron, mercury, arsenic and faecal coliforms, concerning V. fischeri toxic response. This integrated assessment may allow the evaluation of the eff ect of future pollution abatement measures over the water quality of Leça River.

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Section: Multiple Linear Regressionmentioning

confidence: 99%

Multiple linear and principal component regressions for modelling ecotoxicity bioassay response

Gomes

Pires

Figueiredo

et al. 2013

Environmental Technology

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“…The percentage of bioluminescence inhibition relative to the control sample (bacteria not subjected to a potential toxicant) was measured after 5 and 15 minutes' exposure times. The obtained results were assessed based on the toxicity classification system shown in Table 3 [Grabińska-Sota 2015, Hsieh et al 2008]. Before proceeding with testing, the samples were subjected to the repeated measurement of free chlorine concentration.…”

Section: Toxicological Assessment Of the Effects Of The Conducted Promentioning

confidence: 99%

The Use of Membrane Techniques in Swimming Pool Water Treatment

et al. 2017

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The paper has determined the suitability of membrane processes (UF ultrafiltration, UF, and nanofiltration, NF) for the purification of waste streams, so-called backwash water, obtained from washing filtration beds in a swimming pool water system. The backwash water samples were taken from the circuits located in two indoor facilities with a different purpose of the basins. Moreover, the samples were characterized by varying quality, as described by selected physicochemical parameters (such as turbidity and ultraviolet absorbance UV254). Commercial membranes were used for the tests. The transport-separation properties of the membranes were determined based on the volumetric flux of the permeate. In addition, backwash water samples before and after the membrane process were subjected to toxicological assessment using the Microtox ® screening test. The performed processes contributed to a significant reduction in turbidity and the value of UV254 ultraviolet absorbance, both in the ultrafiltration and nanofiltration processes. Whereas, significant differences in transport properties were noted within individual processes. A great influence of backwash water quality, including physicochemical parameters, on the course and results of the membrane filtration processes was demonstrated. In all of the nanofiltration cycles carried out, the removal of the toxic properties of the backwash water with respect to bacteria in the Microtox ® test was found. Nevertheless, samples with high values of resultant physicochemical parameters after the ultrafiltration process were still characterized by high toxicity. Pressure membrane processes show high effectiveness in the removal of contaminants from backwash water. However, it is necessary to introduce supporting processes aimed at reducing membrane pore blocking by deposits and organic compounds, and in the case of ultrafiltration, assuring the safety of the purified stream in terms of the toxicological effect.

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“…The slight increase of toxicity for DCF and IBU was observed only at the beginning of the process, i.e., up to 15 min. Water of such characteristics is classified as non-toxic [45,46]. As a result of the further conduct of the process, a gradual decrease in water toxicity was observed, whereas negative values of bioluminescent inhibition of bacteria prove the existence of the stimulation of their metabolic processes.…”

Section: Toxicological Assessment Of Treated Water Solutionmentioning

confidence: 99%

Influence of Inorganic Ions and Organic Substances on the Degradation of Pharmaceutical Compound in Water Matrix

Kudlek

Dudziak

Bohdziewicz

2016

Water

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Abstract:The paper determined the influence of inorganic substances and high-molecular organic compounds on the decomposition of diclofenac, ibuprofen, and carbamazepine in the process of photocatalysis conducted with the presence of Titanium dioxide (TiO 2 ). It was determined that the presence of such ions as CO affected the increase of reaction rate constant value of diclofenac and ibuprofen decomposition. On the other hand, high molecular organic compounds present in the model effluent additionally catalysed the degradation process of pharmaceutical compounds and constituted an additional sorbent that enabled to decrease their concentration. Toxicological analysis conducted in deionized water with pharmaceutical compounds' patterns proved the production of by-products from oxidation and/or reduction of micropollutants, which was not observed for model effluent irradiation.

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Toxicity of the 13 priority pollutant metals to Vibrio fisheri in the Microtox® chronic toxicity test

Cited by 165 publications

References 28 publications

Multiple linear and principal component regressions for modelling ecotoxicity bioassay response

Multiple linear and principal component regressions for modelling ecotoxicity bioassay response

The Use of Membrane Techniques in Swimming Pool Water Treatment

Influence of Inorganic Ions and Organic Substances on the Degradation of Pharmaceutical Compound in Water Matrix

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