Mercury in the Environment Articles

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Relation among mercury concentration, growth rate and condition of northern pike: A tautology resolved?

by John Wiley & Sons, Ltd.  (Jun. 10, 2016)

Methylmercury is a bioaccumulative contaminant that biomagnifies in aquatic food webs and adversely affects the health of freshwater fish. Previous studies have documented an inverse relation between fish condition and concentration of mercury in fish. However, this relation may be a result of slow‐growing fish accumulating large amounts of ...

Mercury concentrations in Pacific lamprey (Entosphenus tridentatus) and sediments in the Columbia River basin

by John Wiley & Sons, Ltd.  (Mar. 9, 2016)

The authors investigated mercury accumulation in Pacific lamprey and sediments in the Columbia River basin. Mercury concentrations in larval lamprey differed significantly among sample locations (P  ...

Critical perspectives on mercury toxicity reference values for protection of fish

by John Wiley & Sons, Ltd.  (Feb. 29, 2016)

Environmental management decisions at mercury‐contaminated sediment sites are predicated on the understanding of risks to various receptors, including fish. Toxicity reference values (TRVs) for interpreting risks to fish have been developed to assess mercury concentrations in fish or fish prey. These TRVs were systematically evaluated based on ...

Increase Mercury Vapor Detection Range by 10X

by Arizona Instrument LLC  (Jan. 25, 2016)

Vapor dilution module extends detection range of J505 from nanograms to milligrams How it works: The new 10:1 dilution module for the J505 reduces the concentration of mercury vapor in the sample stream by a factor of ten, allowing for a much higher detection limit. Rather than the standard upper detection limit of 500 µg/m3, ...

Mercury correlations among blood, muscle, and hair of northern elephant seals during the breeding and molting fasts

by John Wiley & Sons, Ltd.  (Jan. 12, 2016)

Mercury (Hg) biomonitoring and toxicological risk assessments for marine mammals commonly sample different tissues, making comparisons to toxicity benchmarks and among species and regions difficult. Few studies have examined how life history events, such as fasting, influence the relationship between total Hg (THg) concentrations in different ...

Organ‐specific accumulation, transportation and elimination of methylmercury and inorganic mercury in a low Hg accumulating fish

by John Wiley & Sons, Ltd.  (Jan. 12, 2016)

Low Hg concentrations down to several ng Hg per g wet tissue are documented in certain fish species such as herbivorous fish, and the underlying mechanisms remain speculative. In the present study, bioaccumulation and depuration patterns of inorganic Hg(II) and methylmercury (MeHg) in a herbivorous rabbitfish Siganus canaliculatus were ...

Disparity between state fish consumption advisory systems for methylmercury and US Environmental Protection Agency recommendations: A case study of the south central United States

by John Wiley & Sons, Ltd.  (Nov. 25, 2015)

Fish consumption advisories are used to inform citizens in the United States about noncommercial game fish with hazardous levels of methylmercury (MeHg). The US Environmental Protection Agency (USEPA) suggests issuing a fish consumption advisory when concentrations of MeHg in fish exceed a human health screening value of 300 ng/g. However, ...

Seasonal and flow‐driven dynamics of particulate and dissolved mercury and methylmercury in a stream impacted by an industrial mercury source

by John Wiley & Sons, Ltd.  (Nov. 18, 2015)

Sediments and floodplain soils in the East Fork Poplar Creek (EFPC) watershed in Oak Ridge, TN, are contaminated with high levels of mercury (Hg) from an industrial source at the headwaters. While baseflow conditions have been monitored, concentrations of Hg and methylmercury (MeHg) during high‐flow storm events, when the stream is more ...

Acute embryotoxic effects but no long term reproductive effects of in ovo methylmercury exposure in zebra finches (Taeniopygia guttata)

by John Wiley & Sons, Ltd.  (Nov. 17, 2015)

Mercury bioaccumulates in terrestrial ecosystems as methylmercury (MeHg), yet little is known about its effects on terrestrial organisms including songbirds. Here we used a model songbird species, the zebra finch (Taeniopygia guttata), to assess short‐term embryotoxic effects of in ovo MeHg exposure on hatching success and post‐hatching growth ...

Coal phase out case study: What Alberta can learn from Washington State

by Green Energy Futures  (Nov. 16, 2015)

How Bruce Nilles and the Sierra Club cleaned up Washington state Renewable energy made up half of all the new power plantsconstructed in the world in 2014. That’s an incredible number made all the better when you think of what these plants are ...

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