Biomonitoring Articles

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Top International News in Chemical Policy and Regulation

by Acta Group  (May 30, 2016)

AUSTRALIA Australia Releases Third Consultation Paper Concerning NICNAS Reform: On April 29, 2016, the National Industrial Chemicals Notification and Assessment Scheme (NICNAS) published the third consultation paper on its  ...

Development of Helisoma trivolvis pond snails as biological samplers for biomonitoring of current‐use pesticides

by John Wiley & Sons, Ltd.  (Feb. 15, 2016)

Non‐target aquatic organisms residing in wetlands are commonly exposed to current‐use pesticides through spray drift and runoff. However, it is frequently challenging to measure exposure due to rapid dissipation of pesticides from water and reduced bioavailability. Our hypothesis is that freshwater snails can serve as bioindicators of pesticide ...

Comparative study on toxicity evaluation of anaerobically treated parboiled rice manufacturing wastewater through fish bioassay

by IWA Publishing  (Jan. 19, 2016)

Short term aquatic bioassay has been developed into a useful tool in water quality management. These tests give information on comparative toxicity of several compounds. The objective of this study was to evaluate the acute toxicity of raw and anaerobically treated effluents of the parboiled rice manufacturing industry. The acute toxicity test ...

Generation of mt:egfp transgenic zebrafish biosensor for the detection of aquatic zinc and cadmium

by John Wiley & Sons, Ltd.  (Jan. 11, 2016)

Zebrafish embryo toxicity test has become a popular method for detecting the environmental pollutions. But our research showed that zebrafish embryos exhibited no visible paramorphia, malformation or mortality when exposed to heavy metals in a range above the environmental standard limits, indicating that zebrafish embryo an imprecise model in ...

Active biomonitoring locates pollutant sources in the Anacostia River (MD; DC; USA)

by John Wiley & Sons, Ltd.  (Oct. 1, 2015)

The freshwater Anacostia River watershed (MD, DC, USA) was surveyed for the sources of bioavailable EPA Priority Pollutants and toxic metals by active biomontoring (ABM) using the freshwater Asiatic clam Corbicula fluminea. The Anacostia River is a 456km2 tributary of the tidal freshwater Potomac River that includes the city of Washington DC ...

Application of XCMS Online and toxicity bioassays to the study of transformation products of levofloxacin

by IWA Publishing  (Jul. 17, 2015)

We studied the nature and antimicrobial activity of ozonolysis transformation products (OTPs) of levofloxacin (LEV), a frequently detected fluoroquinolone antimicrobial in environmental waters. Two bioassays, the Kirby–Bauer test and the broth microdilution assay, were used to measure changes in the antimicrobial activity of solutions at low ...

A robust bioassay to assess the toxicity of metals to the antarctic marine microalga Phaeocystis antarctica

by John Wiley & Sons, Ltd.  (Apr. 30, 2015)

Despite evidence of contamination in Antarctic coastal marine environments, no water‐quality guidelines have been established for the region because of a paucity of biological effects data for local Antarctic species. Currently, there is limited information on the sensitivity of Antarctic microalgae to metal contamination, which is exacerbated ...

Improved sensitivity to heavy metals in the bioluminescence assay using alternative salt solutions

by microLAN On-line Biomonitoring Systems  (Apr. 1, 2015)

Introduction The marine bacterium Vibrio fischeri is widely used for the toxicity assessment of environmental samples. The toxicity is measured in a medium containing 2% NaCl. When the bacteria are exposed to toxic compounds, the light production is inhibited. Toxicity values are obtained after 15 and 30 minutes exposure and expressed as EC50 ...

Microbial fuel cell-based biosensors for environmental monitoring: a review

by IWA Publishing  (Mar. 27, 2015)

The microbial fuel cell (MFC) is an innovative technology that was initially designed to harness energy from organic waste using microorganisms. It is striking how many promising applications beyond energy production have been explored in recent decades. In particular, MFC-based biosensors are considered to be the next generation biosensing ...

Evaluation of acute ecotoxicity removal from industrial wastewater using a battery of rapid bioassays

by IWA Publishing  (Dec. 19, 2014)

The present study compares conventional wastewater treatment technologies (coagulation–flocculation and activated sludge) and powdered activated carbon (PAC) treatment for the removal of acute ecotoxicity from wastewater generated by tank truck cleaning (TTC) processes. Ecotoxicity was assessed with a battery of four commercially ...

Photo-Fenton-like treatment of K-acid: assessment of treatability, toxicity and oxidation products

by IWA Publishing  (Sep. 29, 2014)

Photo-Fenton-like treatment of the commercially important naphthalene sulphonate K-acid (2-naphthylamine-3,6,8-trisulphonic acid) was investigated using UV-C, UV-A and visible light irradiation. Changes in toxicity patterns were followed by the Vibrio fischeri bioassay. Rapid and complete degradation of K-acid accompanied with nearly complete ...

Eutrophication and nutrient limitation in the aquatic zones around Huainan coal mine subsidence areas, Anhui, China

by IWA Publishing  (Sep. 17, 2014)

The eutrophication of three small lakes in the aquatic zones at the Huainan coal mine subsidence areas, designated as east site (ES), central site (CS), and west site (WS), were studied. Nutrient content, species, and nitrogen (N) to phosphorus (P) ratios were obtained through water quality analyses. Nutrient limitation was evaluated by nutrient ...

Eco-toxicity of oily wastes containing TENORM

by Inderscience Publishers  (Aug. 5, 2014)

Oily wastes are considered as one of the most hazardous waste types. Additionally to petroleum components, they can contain radioactive elements. This study aimed to estimate the toxicity of four raw and two treated waste samples obtained from petroleum production yard. Eight elutriate bioassays using plants ( Raphanus sativus and algae ...

Electrospun substituted polyphenylene vinylene nanofibres

by Inderscience Publishers  (Apr. 21, 2014)

Biosensors are a rapidly growing research field, which is being swiftly advanced due to recent advances in nanotechnology. However most of the sensors developed are solution based, which limits their commercial use. Thus, with the view of developing bio–nanosensors based on solid–state photoluminescent nanofibres the electrospinning process was ...

Efficiency of peracetic acid in inactivating bacteria, viruses, and spores in water determined with ATP bioluminescence, quantitative PCR, and culture-based methods

by IWA Publishing  (Mar. 19, 2014)

The disinfection efficiency of peracetic acid (PAA) was investigated on three microbial types using three different methods (filtration-based ATP (adenosine-triphosphate) bioluminescence, quantitative polymerase chain reaction (qPCR), culture-based method). Fecal indicator bacteria (Enterococcus faecium), virus indicator (male-specific ...

Incorporating potable water sources and use habits into surveys that improve surrogate exposure estimates for water contaminants: the case of bisphenol A

by IWA Publishing  (Mar. 19, 2014)

Human biomonitoring studies for water contaminants are often accompanied by surveys relying solely on total drinking water consumption rates, thus, failing to account for specific water sources (bottled and tap water) and use habits, such as water used for preparing cold/hot beverages (coffee, tea, juice, etc.). Despite the extensive use of ...

Comparison of Microcystis aeruginosa (PCC7820 and PCC7806) growth and intracellular microcystins content determined by liquid chromatography–mass spectrometry, enzyme-linked immunosorbent assay anti-Adda and phosphatase bioassay

by IWA Publishing  (Mar. 19, 2014)

Cyanobacteria are able to produce several metabolites that have toxic effects on humans and animals. Among these cyanotoxins, the hepatotoxic microcystins (MC) occur frequently. The intracellular MC content produced by two strains of Microcystis aeruginosa, PCC7806 and PCC7820, and its production kinetics during the culture time were studied in ...

Bt rice producing Cry1C protein does not have direct detrimental effects on the green lacewing Chrysoperla sinica Tjeder

by John Wiley & Sons, Ltd.  (Mar. 12, 2014)

The effects of insect‐resistant genetically engineered rice producing Cry1C protein derived from Bacillus thuringiensis (Bt) on Chrysoperla sinica Tjeder (Neuroptera: Chrysopidae) were assessed in laboratory bioassays. Survival and development of C. sinica larvae were not adversely affected when the larvae were fed a diet containing purified ...

Laboratory algal bioassays using PAM fluorometry: Effects of test conditions on the determination of herbicide and field sample toxicity

by John Wiley & Sons, Ltd.  (Jan. 29, 2014)

Pulse Amplitude Modulation (PAM) fluorometry, based on chlorophyll a fluorescence, is a frequently used technique in algal bioassays to assess toxicity of single compounds or complex field samples. It is known that several test conditions can influence the test results and since a standardized test protocol is currently lacking, it is difficult ...

Development of exobiopolymer-based biosensor for detection of phosphate in water

by IWA Publishing  (Dec. 19, 2013)

The present study was conducted to develop a biosensor by exploiting phosphate-binding capacity of exobiopolymer (EBP) produced by Acinetobacter sp. An environmental isolate of EBP-producing Acinetobacter sp. was subjected to transposon (Tn5) mutagenesis to overproduce EBP and afford improved phosphate selectivity. A mutant producing the highest ...

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