The Microtox® biological test: Application in toxicity evaluation of surface waters and sediments in Poland

2007 ◽  
Vol 36 (4) ◽  
Author(s):  
Elżbieta Niemirycz ◽  
Joanna Nichthauser ◽  
Marta Staniszewska ◽  
Grzegorz Nałęcz-Jawecki ◽  
Jerzy Bolałek
Keyword(s):  
Bottom Sediments ◽  
Surface Waters ◽  
Organic Content ◽  
Biological Test ◽  
Toxicity Evaluation ◽  
Pollution Levels ◽  
Vistula River ◽  
Test Application ◽  
Odra River ◽  
The Relationship

The Microtox® biological test: Application in toxicity evaluation of surface waters and sediments in PolandResearch into the suitability of Microtox® for the evaluation of toxicity of surface waters and bottom sediments in Poland was conducted. Water bodies of various pollution levels were tested, including the Odra River and its tributaries, the Lower Vistula River, the Kashubian Lake District and the Gulf of Gdańsk, using a Microtox® Model 500 analyser (Microbics Corporation, USA). The majority of tested surface water samples were found to be apparently non-toxic. However, 75% of the bottom sediment samples were found to be highly toxic (EC50>2%). These results indicate that the Microtox® test is suitable for evaluating the toxicity of bottom sediments, in which pollutants tend to accumulate. It seems, however, that Microtox® lacks the sensitivity to be of use in analyzing water quality. The relationship between the toxicity of analysed sediments and their organic content was examined.

Keratinophilic fungi in bottom sediments of surface waters

1990 ◽  
Vol 28 (5) ◽  
pp. 419-422 ◽  
Author(s):  
K. Ulfig ◽  
A. Ulfig
Keyword(s):  
Bottom Sediments ◽  
Surface Waters ◽  
Keratinophilic Fungi

scholarly journals The Relationship between Particulate Pollution Levels in Australian Cities, Meteorology, and Landscape Fire Activity Detected from MODIS Hotspots

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e47327 ◽  
Author(s):  
Owen F. Price ◽  
Grant J. Williamson ◽  
Sarah B. Henderson ◽  
Fay Johnston ◽  
David M. J. S. Bowman
Keyword(s):  
Particulate Pollution ◽  
Pollution Levels ◽  
Fire Activity ◽  
The Relationship

Assessing the relationship between the abundance of microplastics in sediments, surface waters, and fish in the Iran southern shores

2021 ◽  
Author(s):  
Ali Agharokh ◽  
Mojtaba S. Taleshi ◽  
Mehdi Bibak ◽  
Majid Rasta ◽  
Hor Torabi Jafroudi ◽  
...  
Keyword(s):  
Surface Waters ◽  
The Relationship

scholarly journals Hydrochemical Characteristics of Surface Waters and Their Relationships to the Kashin–Beck Disease in Longzi County, Tibet

2021 ◽  
Author(s):  
Yuan Tian ◽  
Jianyu Xiao ◽  
Xinjie Zha ◽  
Chengqun Yu
Keyword(s):  
Surface Waters ◽  
Climatic Conditions ◽  
Hydrochemical Characteristics ◽  
Potential Toxic Elements ◽  
Essential Trace Elements ◽  
Cobalt Iron ◽  
Endemic Areas ◽  
The Relationship ◽  
Beck Disease

Abstract Although previous studies have been reported between the Kashin–Beck Disease (KBD) epidemic and the hydrochemical characteristics of surface waters, the etiology of the disease remains unclear. In the present study, we investigated the relationship between the KBD and the environment by comprehensively examining the hydrochemical characteristics of surface waters in Longzi County, Tibet, and the spatial incidence of the disease. Results show that, the pH (mean = 7.27±0.30), TH (mean = 57.08±45.74 mg L–1), and TDS (mean = 67.56±44.00 mg L–1) of surface waters in KBD endemic areas are lower than for those in the non-KBD endemic areas (means of pH = 7.49±0.30; TH = 262.06±123.29 mg L–1; TDS = 253.25±100.39 mg L–1). These results suggest that long-term consumption of low TDS, essential trace elements (e.g., nickel, cobalt, iron, selenium, zinc, molybdenum, and iodine) deficient, and potential toxic elements (such as arsenic) enriched waters by humans likely causes the KBD. Environmental factors such as the geology and geomorphology may produce biogeochemical imbalance, geomorphic, vegetation types and local climatic conditions may have significant impact on food fungi toxin poisoning and water organic compound poisoning, and these are also important in the KBD occurrence.

Sediment pH and Redox Potential Affect the Bioavailability of Al, Cu, Fe, Mn, and Zn to Rooted Aquatic Macrophytes

1993 ◽  
Vol 50 (1) ◽  
pp. 143-148 ◽  
Author(s):  
Leland J. Jackson ◽  
Jacob Kalff ◽  
Joseph B. Rasnnussen
Keyword(s):  
Redox Potential ◽  
Metal Content ◽  
Aquatic Macrophytes ◽  
Organic Content ◽  
Trophic Levels ◽  
Sediment Organic Content ◽  
Sediment Ph ◽  
The Relationship ◽  
Sediment Metal

We have evaluated the role of sediment pH (4.7–7.1) and redox potential (88–305 mV) in determining the bioavailability of five metals to four species of isoetoid macrophytes. The four species (Eleocharis acicularis, Eriocaulon septangulare With., Isoetes sp., and Sagittaria graminae) did not differ significantly in the relationship between the contents of metals in plants and sediment. When data for all species were pooled, 28–80% of the variation in the log of plant metal content was explained by the log of sediment metal (Al, Fe, and Mn) or by the log of sediment organic content (Cu and Zn). Sediment pH explained 45% (Al), 10% (Cu), 20% (Fe), 5% (Mn), and 12% (Zn) variation over and above that explained by the sediment metal content. These results demonstrate that lower sediment pH, in the presence of mildly oxic redox conditions, increases the bioavailability of these five trace metals to rooted aquatic plants. Rooted macrophytes subject to acidification contain higher metal concentrations which may be transferred by grazing to higher trophic levels.

scholarly journals The Importance of Organic Content to Fractal Floc Properties in Estuarine Surface Waters: Insights From Video, LISST, and Pump Sampling

2021 ◽  
Vol 126 (1) ◽  
Author(s):  
Kelsey A. Fall ◽  
Carl T. Friedrichs ◽  
Grace M. Massey ◽  
David G. Bowers ◽  
S. Jarrell Smith
Keyword(s):  
Surface Waters ◽  
Organic Content ◽  
Floc Properties
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