Biomonitoring Articles

193 Results found
  • Category: Monitoring & Testing ×

  • Subcategory: Biomonitoring ×

A computational approach predicting CYP450 metabolism and estrogenic activity of an endocrine disrupting compound (PCB‐30)

by John Wiley & Sons, Ltd.  (Mar. 31, 2014)

Endocrine disrupting chemicals (EDCs) influence growth and development through interactions with the hormone system, often through binding to hormone receptors such as the estrogen receptor. Computational methods can predict EDC activity of unmodified compounds, but approaches predicting activity following metabolism are lacking. This study ...

Species sensitivity and dependence on exposure conditions impacting the phototoxicity of TiO2 nanoparticles to benthic organisms

by John Wiley & Sons, Ltd.  (Mar. 21, 2014)

Toxicity of TiO2 nanoparticles (nano‐TiO2) to aquatic organisms can be greatly increased upon exposure to ultraviolet radiation (UV). This phenomenon has received some attention for water column species; however, investigations of nano‐TiO2 phototoxicity for benthic organisms are still limited. In this study, bioassays of 3 representative ...

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 ...

Availability of different phosphorus forms in agricultural soil to Microcystis aeruginosa

by IWA Publishing  (Mar. 19, 2014)

We investigated the availability of different forms of particulate soil phosphorus (P) to Microcystis aeruginosa by sequential extraction and bioassay. We cultured M. aeruginosa in media containing, as the sole source of P, soils sequentially extracted with 1 M NH4Cl, 0.11 M bicarbonate dithionite, 1 M NaOH, and 0.5 M HCl. Analyses of ...

Ecotoxicological characterisation of sediments from stormwater retention basins

by IWA Publishing  (Mar. 13, 2014)

Retention–detention basins are important structures for managing stormwater. However, their long-term operation raises the problem of managing the sediments they accumulate. Potential uses for such sediments have been envisaged, but each sediment must be characterised beforehand to verify its harmlessness. In this paper we address this ...

Clarifying relationships between persistent organic pollutant concentrations and age in wildlife biomonitoring: Individuals, cross‐sections, and the roles of lifespan and sex

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

Relationships between persistent organic pollutant (POP) levels and age in wildlife biomonitoring are often interpreted as changes in contaminant burden as organisms age. However cross‐sectional body burden‐age trends (CBATs) obtained from biomonitoring studies, which sample individuals of different age at the same time, should not be confused ...

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 ...

A comparison of the herbicide tolerances of rare and common plants in an agricultural landscape

by John Wiley & Sons, Ltd.  (Jan. 31, 2014)

Declining plant biodiversity in agroecosystems has often been attributed to escalating use of chemical herbicides, but other changes in farming systems, including the clearing of seminatural habitat fragments, confound the influence of herbicides. The present study introduces a new approach to evaluate the impacts of herbicide pollution on ...

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 ...

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