Recent contamination of mercury in an estuarine environment (Marano lagoon, Northern Adriatic, Italy)

Covelli, Stefano; Acquavita, Alessandro; Piani, Raffaella; Predonzani, Sergio; Vittor, Cinzia De

doi:10.1016/j.ecss.2009.01.021

Cited by 85 publications

(35 citation statements)

References 56 publications

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“…Therefore, Hg-w may play more important roles than MeHg in soil for the accumulation of MeHg in rice tissues. This could probably be due to the fact that Hg-w might serve as a major substrate for the methylation process of IHg (Wallschlager et al, 1998;Boszke et al, 2006;Covelli et al, 2009). More works will be needed to further investigate the position for the methylation of Hg-w, in vitro (rhizosphere soil) or in vivo (root, stalk, leaf, husk or seed).…”

Section: Accumulation Pathways Of Thg and Mehg In Rice Plantsmentioning

confidence: 99%

“…The MeHg levels were mostly below 10 mg kg (Wallschlager et al, 1998;Boszke et al, 2006;Covelli et al, 2009). In this work, the concentrations of Hg-w in the first four sites soils (n ¼ 65) were determined.…”

Section: Thg and Mehg In Rice Tissuesmentioning

confidence: 99%

“…Therefore, THg has been regarded as a poor indicator for the toxicological and environmental hazards of Hg contamination in soil. Normally, water soluble Hg (Hg-w) is highly soluble, easily available to biota, and might serve as a main substrate for the methylation of IHg (Wallschlager et al, 1998;Boszke et al, 2006;Covelli et al, 2009). Studies in Wanshan have revealed a serious Hg contamination in local soil, with THg levels reaching up to 130,000 mg kg À1 (Lin et al, 2010).…”

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confidence: 99%

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Accumulation of total mercury and methylmercury in rice plants collected from different mining areas in China

Meng¹,

Li²,

Shao³

et al. 2014

Environmental Pollution

149

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a b s t r a c tA total of 155 rice plants were collected from ten mining areas in three provinces of China (Hunan, Guizhou and Guangdong), where most of mercury (Hg) mining takes place in China. During the harvest season, whole rice plants were sampled and divided into root, stalk & leaf, husk and seed (brown rice), together with soil from root zone. Although the degree of Hg contamination varied significantly among different mining areas, rice seed showed the highest ability for methylmercury (MeHg) accumulation. Both concentrations of total mercury (THg) and MeHg in rice plants were significantly correlated with Hg levels in soil, indicating soil is still an important source for both inorganic mercury (IHg) and MeHg in rice plants. The obvious discrepancy between the distribution patterns of THg and MeHg reflected different pathways of IHg and MeHg accumulation. Water soluble Hg may play more important role in MeHg accumulation in rice plants.

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Section: Accumulation Pathways Of Thg and Mehg In Rice Plantsmentioning

confidence: 99%

Section: Thg and Mehg In Rice Tissuesmentioning

confidence: 99%

mentioning

confidence: 99%

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Accumulation of total mercury and methylmercury in rice plants collected from different mining areas in China

Meng¹,

Li²,

Shao³

et al. 2014

Environmental Pollution

149

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“…In 1984, due to application of law rules, a modern wastewater system treatment was installed; hence no more inputs of Hg should have been released into the environment. Covelli et al (2009) stated that although uncontrolled Hg discharge from the CAP stopped, the artificial channel connecting the industrial area to the upper river course is still an active Hg source for the Marano lagoon environment.…”

Section: Manila Clam (Tapes Philippinarum Adams and Reeve 1852) In Thementioning

confidence: 99%

Manila Clam (Tapes philippinarum Adams & Reeve, 1852) in the Lagoon of Marano and Grado (Northern Adriatic Sea, Italy): Socio-Economic and Environmental Pathway of a Shell Farm

Sladonja¹,

Bettoso²,

Zentilin³

et al. 2011

Aquaculture and the Environment - A Shared Destiny

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“…L'avvenuta industrializzazione durante il secolo scorso, ha notevolmente aumentato il rilascio di mercurio nell'ambiente (3). Negli ultimi decenni il suo utilizzo industriale è stato notevolmente ridotto, ma la sua presenza nell'ambiente tuttavia è stazionaria, a causa dell'elevata persistenza nei sedimenti marini (4). Il mercurio nell'ambiente marino, subisce la trasformazione in composti organici, come il metilmercurio, ad opera di microrganismi negli strati superficiali dei sedimenti.…”

Section: Introduzioneunclassified

Heavy Metals Contamination in Fish of the Ligurian Sea

et al. 2009

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SUMMARYAim of this investigation was to evaluate heavy metals contamination (mercury, cadmium and lead) in fish and shellfish from Ligurian Sea. 58 muscle samples (45 fish and 13 shellfish) were collected and analyzed. 20 samples exceeded the maximum residue limits (MRLs) set by regulation for mercury (16 fish and 4 shellfish samples), while only one fish sample was not consistent with the MRL for lead. Therefore, 35,8% of Ligurian fishing turned out to be not adequate and potentially harmful for consumers. In order to estimate the real risk for human health it is necessary to enforce this study, correlating the results with fish species and with the effective fish consumption. Key wordsHeavy metals contamination, Fish and shellfish muscle, Ligurian Sea INTRODUZIONEL'inquinamento delle acque marine è dovuto principalmente allo sviluppo delle attività antropiche che determinano l'immissione nell'ambiente acquatico, diretta o indiretta, di sostanze in grado di provocare effetti dannosi sugli organismi viventi e, di conseguenza, sulla salute dell'uomo. In particolare, esso dipende dai contaminanti trasportati in mare dai bacini idrografici interni, lungo i quali insistono numerose attività industriali, agro-zootecniche e fenomeni di urbanizzazione, mentre una quota significativa è dovuta all'immissione direttamente di scarichi urbani e industriali nelle acque costiere (1). I metalli pesanti, quali mercurio, cadmio e piombo possono destare preoccupazioni per il consumatore in virtù della loro capacità di bioaccumulare lungo la catena alimentare, fino a raggiungere nei pesci predatori come tonno e pesce spada, i più elevati livelli di contaminazione (2).Il mercurio è un metallo pesante la cui presenza nell'ambiente è sia di origine naturale che antropica. L'avvenuta industrializzazione durante il secolo scorso, ha notevolmente aumentato il rilascio di mercurio nell'ambiente (3). Negli ultimi decenni il suo utilizzo industriale è stato notevolmente ridotto, ma la sua presenza nell'ambiente tuttavia è stazionaria, a causa dell'elevata persistenza nei sedimenti marini (4). Il mercurio nell'ambiente marino, subisce la trasformazione in composti organici, come il metilmercurio, ad opera di microrganismi negli strati superficiali dei sedimenti. Il metilmercurio entra nella catena alimentare attraverso il plancton, per passare poi attraverso gli invertebrati e i pesci situati ai più bassi livelli della catena trofica, fino ai grandi predatori, dove si rinvengono le concentrazioni maggiori (3; 4). L'accumulo nei pesci è maggiore nel tessuto muscolare rispetto a quello adiposo

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Recent contamination of mercury in an estuarine environment (Marano lagoon, Northern Adriatic, Italy)

Cited by 85 publications

References 56 publications

Accumulation of total mercury and methylmercury in rice plants collected from different mining areas in China

Accumulation of total mercury and methylmercury in rice plants collected from different mining areas in China

Manila Clam (Tapes philippinarum Adams & Reeve, 1852) in the Lagoon of Marano and Grado (Northern Adriatic Sea, Italy): Socio-Economic and Environmental Pathway of a Shell Farm

Heavy Metals Contamination in Fish of the Ligurian Sea

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