Unraveling the causes of the toxicity of extremely acid waters of volcanic origin.

A.J. Lohr; M.J. de Kort; N.M. van Straalen; C.A.M. van Gestel

doi:10.1016/j.envint.2007.02.008

Unraveling the causes of the toxicity of extremely acid waters of volcanic origin.

A.J. Lohr, M.J. de Kort, N.M. van Straalen, C.A.M. van Gestel

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

A river ecosystem in East Java, Indonesia, fed by a volcanic lake with high concentrations of dissolved metals and a low pH, was found to support only few macroinvertebrates. To unravel the causes of toxicity and to determine the level of dilution necessary to obtain non-toxic water, a bioassay was conducted with the fairy shrimp Thamnocephalus platyurus. A partial toxicity identification evaluation (TIE) approach was used with EDTA as a chelating agent to relate toxicity to pH and metal concentrations. Three water samples were tested, with pHs ranging from 0.72 to 4.5, and diluted with water from a neutral river to different degrees. The dilution factor necessary to achieve no more than 50% mortality in the Thamnotox test (Ldf

Original language	English
Pages (from-to)	743-749
Journal	Environment International
Volume	33
DOIs	https://doi.org/10.1016/j.envint.2007.02.008
Publication status	Published - 2007

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title = "Unraveling the causes of the toxicity of extremely acid waters of volcanic origin.",

abstract = "A river ecosystem in East Java, Indonesia, fed by a volcanic lake with high concentrations of dissolved metals and a low pH, was found to support only few macroinvertebrates. To unravel the causes of toxicity and to determine the level of dilution necessary to obtain non-toxic water, a bioassay was conducted with the fairy shrimp Thamnocephalus platyurus. A partial toxicity identification evaluation (TIE) approach was used with EDTA as a chelating agent to relate toxicity to pH and metal concentrations. Three water samples were tested, with pHs ranging from 0.72 to 4.5, and diluted with water from a neutral river to different degrees. The dilution factor necessary to achieve no more than 50% mortality in the Thamnotox test (Ldf",

author = "A.J. Lohr and {de Kort}, M.J. and {van Straalen}, N.M. and {van Gestel}, C.A.M.",

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AU - van Gestel, C.A.M.

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AB - A river ecosystem in East Java, Indonesia, fed by a volcanic lake with high concentrations of dissolved metals and a low pH, was found to support only few macroinvertebrates. To unravel the causes of toxicity and to determine the level of dilution necessary to obtain non-toxic water, a bioassay was conducted with the fairy shrimp Thamnocephalus platyurus. A partial toxicity identification evaluation (TIE) approach was used with EDTA as a chelating agent to relate toxicity to pH and metal concentrations. Three water samples were tested, with pHs ranging from 0.72 to 4.5, and diluted with water from a neutral river to different degrees. The dilution factor necessary to achieve no more than 50% mortality in the Thamnotox test (Ldf

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JO - Environment International

JF - Environment International

ER -

Unraveling the causes of the toxicity of extremely acid waters of volcanic origin.

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