Effect of pH on cadmium toxicity, speciation, and accumulation during naphthalene biodegradation

Sandrin, Todd R.; Maier, Raina M.

doi:10.1002/etc.5620211010

Cited by 44 publications

(24 citation statements)

References 27 publications

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“…However, more studies are recommended regarding the different chemical forms of the metals that surpassed the permissible limits to better understand their toxicity. Cobbett and Goldsbrough (2002) stated that neutralization of some metals is potentially achieved when they are associated to proteins, and may be eliminated from an organism by different metabolic routes (Sandrin andMaier 2002, Flora et al 2012).…”

Section: Discussionmentioning

confidence: 99%

SEASONAL LEVELS OF HEAVY METALS IN SOFT TISSUE AND MUSCLE OF THE PEN SHELL Atrina maura (SOWERBY, 1835) (BIVALVIA: PINNIDAE) FROM A FARM IN THE SOUTHEASTERN COAST OF THE GULF OF CALIFORNIA, MEXICO

Góngora-Gómez

Domínguez-Orozco

Villanueva-Fonseca

et al. 2018

Rev. Int. Contam. Ambie.

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The pen shell (Atrina maura) is a filter-feeder bivalve that may accumulate metals in its body. The objective of this study was to determine seasonal concentrations of copper (Cu), chromium (Cr), cadmium (Cd), nickel (Ni), lead (Pb), arsenic (As), zinc (Zn), and mercury (Hg) in soft tissue and muscle of A. maura cultivated in a farm located in the southeastern coast of the Gulf of California from summer 2011 to summer 2012. Except for Cu, the higher metal concentrations were found during the dry season (winter 2011-spring 2012). The mean values in soft tissue fluctuated from 0.064 ± 0.01 µg/g (dry weight [dw]) for Hg to 485.66 ± 71.12 µg/g (dw) for Zn, while for muscle they varied from 0.058 ± 0.03 µg/g (dw) for Hg to 64.83 ± 4.90 µg/g (dw) for Zn. Concentrations of cadmium (18.15 µg/g in soft tissue and 1.82 µg/g in muscle, wet weight [ww]) and lead (2.31 µg/g in soft tissue, ww) exceeded the permissible limits (36.3, 3.64, and 2.31 times, respectively) recommended by the sanitary regulations of the official mexican standards. The results suggest that variation of metal levels in cultivated pen shell could be influenced by seasonality and anthropogenic activities such as agriculture and aquaculture developed around the culture zone. Continual monitoring of metals in farmed pen shell is recommended.Palabras clave: concentración de metales, variación estacional, bivalvos, cultivo, monitoreo RESUMEN El callo de hacha (Atrina maura) es un bivalvo filtrador que puede acumular metales en su cuerpo. El objetivo de este trabajo fue determinar las concentraciones estacionales de cobre (Cu), cromo (Cr), cadmio (Cd), níquel (Ni), plomo (Pb), arsénico (As), zinc (Zn) y mercurio (Hg) en tejido suave y músculo de A. maura proveniente de una granja del sureste del Golfo de California, del verano de 2011 al verano de 2012. Las concentraciones más altas de todos los metales, con excepción del Cu, se encontraron en la estación de secas (invierno 2011-primavera 2012). Los valores promedio (peso seco) en A.M. Góngora-Gómez et al. 58el tejido suave fluctuaron de 0.064 ± 0.01 µg/g para Hg a 485.66 ± 71.12 µg/g para Zn, mientras que en músculo variarion de 0.058 ± 0.03 µg/g para Hg a 64.83 ± 4.90 µg/g para Zn. Las concentraciones promedio en peso húmedo para cadmio (18.15 µg/g en tejido suave y 1.82 µg/g en músculo) y plomo (2.31 µg/g en tejido suave) excedieron los límites permitidos (36.3, 3.64 y 2.31 veces, respectivamente) por la regulación sanitaria de las Normas Oficiales Mexicanas. Los resultados sugieren que la variación de metales encontrada en el callo de hacha pudo estar influida por la estacionalidad y las actividades antropogénicas desarrolladas en los alrededores de la zona de cultivo, como agricultura y acuacultura. Se recomiendan monitoreos continuos de metales en callo de hacha cultivado.

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Section: Discussionmentioning

confidence: 99%

SEASONAL LEVELS OF HEAVY METALS IN SOFT TISSUE AND MUSCLE OF THE PEN SHELL Atrina maura (SOWERBY, 1835) (BIVALVIA: PINNIDAE) FROM A FARM IN THE SOUTHEASTERN COAST OF THE GULF OF CALIFORNIA, MEXICO

Góngora-Gómez

Domínguez-Orozco

Villanueva-Fonseca

et al. 2018

Rev. Int. Contam. Ambie.

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“…(Sandrin and Maier 2002), in C. regularis (Sakaguchi et al 1979), and in Klebsiella pneumonia (Rudd et al 1983); and/or c) the speciation of the metal in question to a more or less toxic form (Babich and Stotzky 1985;Collins and Stotzky 1992;Ivanov et al 1997). Data from one of the studies described above (Franklin et al 2000) suggest that even relatively small changes in pH (e.g., from 6.5 to 5.7) can reduce metal toxicity.…”

Section: Approaches To Increasing Biodegradation In Co-contaminated Ementioning

confidence: 99%

Impact of metals on the biodegradation of organic pollutants.

Sandrin

Maier

2003

Environ Health Perspect

333

179

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Forty percent of hazardous waste sites in the United States are co-contaminated with organic and metal pollutants. Data from both aerobic and anaerobic systems demonstrate that biodegradation of the organic component can be reduced by metal toxicity. Metal bioavailability, determined primarily by medium composition/soil type and pH, governs the extent to which metals affect biodegradation. Failure to consider bioavailability rather than total metal likely accounts for much of the enormous variability among reports of inhibitory concentrations of metals. Metals appear to affect organic biodegradation through impacting both the physiology and ecology of organic degrading microorganisms. Recent approaches to increasing organic biodegradation in the presence of metals involve reduction of metal bioavailability and include the use of metal-resistant bacteria, treatment additives, and clay minerals. The addition of divalent cations and adjustment of pH are additional strategies currently under investigation.

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“…It was reported that forty percent of hazardous waste sites on the U. S. Environmental Protection Agency's national priority list (NPL) are co-contaminated with organic and heavy metal pollutants (Benin et al, 1999;Cheng, 2003;Sandrin and Maier, 2002). Common heavy metal contaminants include arsenic, cadmium, chromium, copper, lead, mercury, nickel and zinc, which present numerous health dangers to higher organisms and are also known to decrease plant growth, ground cover and have a negative impact on soil microflora (Garbisu and Alkorta, 2001;McGrath et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Remediation of soil co-contaminated with pyrene and cadmium by growing maize (Zea mays L.)

Zhang

Dang

Zheng

et al. 2009

Int. J. Environ. Sci. Technol.

135

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Sites co-contaminated with organic and metal pollutants are common and considered to be a more complex problem as the two components often causes a synergistic effect on cytotoxicity. Phytoremediation has been proposed as a cost-effective technology for treating heavy metal or organic contamination and may be suitable for remediation of co-contaminated soil. This study investigated the concurrent removal of pyrene and cadmium in cocontaminated soil by growing maize in a pot experiment. At the end of 60 day culture, pyrene in spiked soil diminished significantly, accounting for 21-31 % of the initial extractable concentration in unplanted soil and 12-27 % in planted soil. With the increment of cadmium level, the residual pyrene both in unplanted and planted soil tended to increase. Although the presence of cadmium increased the accumulation of pyrene in maize, plant accumulation only account for less than 0.30 % of the total amount of the dissipated pyrene in vegetated soils. It implied that plant-promoted microbial biodegradation was the predominant contribution to the plant-enhanced dissipation of pyrene in co-contaminated soil. Unlike pyrene, heavy metal cadmium cannot be degraded. It was observed that maize can concurrently removed about on the average 0.70 % of the total cadmium amount in soil by plant uptake, but cadmium phytoextraction would be inhibited under contamination of pyrene. Maize CT38 can normally grow in the co-contaminated soil with high level cadmium and pyrene and can effectively remedy the sites co-contaminated with these two types of contamination, which suggest the possibility of simultaneous phytoremediation of two different contaminant types.

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Effect of pH on cadmium toxicity, speciation, and accumulation during naphthalene biodegradation

Cited by 44 publications

References 27 publications

SEASONAL LEVELS OF HEAVY METALS IN SOFT TISSUE AND MUSCLE OF THE PEN SHELL Atrina maura (SOWERBY, 1835) (BIVALVIA: PINNIDAE) FROM A FARM IN THE SOUTHEASTERN COAST OF THE GULF OF CALIFORNIA, MEXICO

SEASONAL LEVELS OF HEAVY METALS IN SOFT TISSUE AND MUSCLE OF THE PEN SHELL Atrina maura (SOWERBY, 1835) (BIVALVIA: PINNIDAE) FROM A FARM IN THE SOUTHEASTERN COAST OF THE GULF OF CALIFORNIA, MEXICO

Impact of metals on the biodegradation of organic pollutants.

Remediation of soil co-contaminated with pyrene and cadmium by growing maize (Zea mays L.)

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