Aspects of water quality and the toxicity of copper to rainbow trout

Brown, V.M.; Shaw, T. L.; Shurben, David

doi:10.1016/0043-1354(74)90025-6

Cited by 90 publications

(25 citation statements)

References 6 publications

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“…As discussed above, few other studies have examined the effects of suspended solids on copper toxicity, and only one was a controlled experimental study [23]. This study similarly found that there was an apparent toxicity of copper bound to suspended solids.…”

Section: Effect Of Suspended Solids On 96-h Lc50smentioning

confidence: 87%

“…Bioassays conducted over several months using a dilution water of varying properties demonstrated toxicity on the basis of dissolved (or, more precisely, filterable) copper varied by only a factor of 1.6, while on the basis of total copper toxicity varied by a factor of 13, suggesting the copper associated with suspended solids was essentially unavailable [36]. However, another study found toxicity expressed as dissolved copper increased in the presence of suspended solids [23], although this might also reflect a stress or indirect chemical effect caused by the solids. Both of these studies were also confounded by variation in other components of the test water.…”

Section: Organic Matter and Suspended Solidsmentioning

confidence: 94%

“…Adsorption of copper onto suspended solids decreases the toxicity on a basis of total copper concentration, but whether this adsorbed copper makes no contribution to toxicity also has had conflicting answers [23,36]. Bioassays conducted over several months using a dilution water of varying properties demonstrated toxicity on the basis of dissolved (or, more precisely, filterable) copper varied by only a factor of 1.6, while on the basis of total copper toxicity varied by a factor of 13, suggesting the copper associated with suspended solids was essentially unavailable [36].…”

Section: Organic Matter and Suspended Solidsmentioning

confidence: 98%

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The effects of water chemistry on the toxicity of copper to fathead minnows

Erickson

Benoit

Mattson

et al. 1996

Enviro Toxic and Chemistry

335

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Abstract-The effects of various water chemistry parameters on the toxicity of copper to larval fathead minnows were investigated. Increased pH, hardness, sodium, dissolved organic matter, and suspended solids each caused toxicity to decrease on the basis of total copper concentrations. In contrast, added potassium resulted in increased toxicity. Alkalinity had no observed effect on total copper LC50s, but its effects might have been masked by those of the cations added with it. In most cases, the effects of water chemistry were found to be similar for different endpoints (growth, survival at different durations), but there were differences in the relative magnitude of some effects across these endpoints. Over all experimental treatments, 96-h total copper LC50s varied 60-fold. Every water chemistry parameter also caused toxicity to vary significantly when expressed on the basis of cupric ion selective electrode measurements, sometimes more so than on the basis of total copper. Therefore, this study does not support attributing to cupric ion a singular importance in regulating toxicity to this test organism. A variety of copper species might be contributing to toxicity and it is evident that toxicity is also affected by water chemistry in ways not related to copper speciation.

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Section: Effect Of Suspended Solids On 96-h Lc50smentioning

confidence: 87%

Section: Organic Matter and Suspended Solidsmentioning

confidence: 94%

Section: Organic Matter and Suspended Solidsmentioning

confidence: 98%

See 1 more Smart Citation

The effects of water chemistry on the toxicity of copper to fathead minnows

Erickson

Benoit

Mattson

et al. 1996

Enviro Toxic and Chemistry

335

View full text Add to dashboard Cite

show abstract

“…Copper is a very toxic heavy metal which is involved in many metabolic pathways leading to a very complex toxicology (Sorensen 1991). Abiotic parameters (pH, conductivity) can modify the speciation and toxicity of copper (Brown et al 1974). Methidathion is one of the more toxic organophosphates with a high 50 % lethal toxicity on rainbow trout: 96-hr LC50 = 10 µg/L (Montgomery 1993).…”

mentioning

confidence: 99%

Joint Effects of Copper Sulphate and Methidathion on Rainbow Trout ( Oncorhynchus mykiss ) EROD and AChE Activities

Flammarion¹,

Migeon²,

Garric³

1996

Bulletin of Environmental Contamination and Toxicology

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“…Muitos trabalhos publicados na década de 70 mostravam que a disponibilidade do cobre para a biota era governada apenas pela presença do íon livre em solução [47][48][49][50][51] . Mais recentemente, entretanto, foi evidenciado que a concentração lábil, que compreende além do íon livre as formas fracamente ligadas, é a que está mais intimamente vinculada à biodisponibilidade do metal, e conseqüentemente, à sua toxicidade 31,52 .…”

Section: Distribuição Do Cobreunclassified

Fatores que governam a especiação do cobre em ambientes aquáticos urbanos: evidências da contribuição de sulfetos solúveis

Scheffer¹,

Sodré²,

Grassi³

2007

Quím. Nova

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Recebido em 3/1/06; aceito em 23/6/06; publicado na web em 19/1/07 FACTORS GOVERNING COPPER SPECIATION IN URBAN FRESHWATERS: EVIDENCES ON THE CONTRIBUTION OF SOLUBLE SULFIDES. Copper speciation and behavior in different rivers located in the city of Curitiba were evaluated in this work. Sampling locations were selected to cover different levels of urbanization regarding their anthropogenic occupation and land use. Results showed that in highly-developed areas, both organic matter and dissolved sulfides were able to control copper speciation. Dissolved sulfide species were the major complexing agent in areas where dissolved oxygen levels are low. Finally, it was demonstrated that in urban areas anthropogenic factors such as sewage inputs and occupation of the drainage basin are the key aspects controlling copper dynamics and speciation in river waters.Keywords: sulfide; copper speciation; natural waters. INTRODUÇÃOA especiação de metais em águas naturais consiste em aspecto chave no subsídio da previsão do seu comportamento geoquímico e de sua biodisponibilidade. Conseqüentemente, fornece informações importantes para avaliação do real impacto associado à presença dessas espécies em ambientes aquáticos. Em sua maioria, as análises de especiação de metais em águas naturais buscam um maior entendimento sobre o comportamento destas espécies, identificando e freqüentemente quantificando os agentes que governam a distribuição de metais na coluna de água e, conseqüentemente, sua biodisponibilidade.No caso específico do cobre, sua especiação em águas naturais é influenciada por fenômenos físico-químicos, tais como a complexação por ligantes orgânicos e inorgânicos, a adsorção por oxi-hidróxidos metálicos e argilominerais e as reações de troca que ocorrem na interface água-sedimento [1][2][3][4][5] . A interação do cobre com a matéria orgânica dissolvida ou com o material particulado em suspensão, por ex., levam à formação de espécies ditas não biodisponíveis do metal [4][5][6] . Muitos trabalhos mostram que a complexação do cobre pela matéria orgânica dissolvida pode governar tanto sua especiação [7][8][9][10][11][12] quanto sua solubilidade 13 em águas superficiais. Mais recentemente, entretanto, algumas pesquisas têm evidenciado que os sulfetos solúveis podem desempenhar um papel tão importante na especiação do cobre quanto o da matéria orgânica dissolvida, sendo que a disponibilidade deste metal para a biota pode ser governada por ambos os tipos de ligantes [14][15][16] . As primeiras evidências da importância dos sulfetos solúveis na especiação de metais surgiram a partir do final dos anos 80 em pesquisas realizadas em ambientes marinhos [17][18][19] , onde foi constatada a presença de H 2 S em águas marinhas ricas em oxigênio e concentrações de S 2-que variavam entre 0,1 e 1,1 nmol L -1 . Estas pesquisas também mostraram que existe uma relação entre a presença dos sulfetos e o controle da biodisponibilidade de metais, por meio da formação de complexos metálicos estáveis.A existência de sulfetos em águas óxicas tem s...

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Aspects of water quality and the toxicity of copper to rainbow trout

Cited by 90 publications

References 6 publications

The effects of water chemistry on the toxicity of copper to fathead minnows

The effects of water chemistry on the toxicity of copper to fathead minnows

Joint Effects of Copper Sulphate and Methidathion on Rainbow Trout ( Oncorhynchus mykiss ) EROD and AChE Activities

Fatores que governam a especiação do cobre em ambientes aquáticos urbanos: evidências da contribuição de sulfetos solúveis

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