Environmental Health Assessment of the Benthic Habitat Adjacent to a Pulp Mill Discharge. I. Acute and Chronic Toxicity of Sediments to Benthic Macroinvertebrates

1997 ◽  
Vol 32 (3) ◽  
pp. 274-284 ◽  
Author(s):  
P. K. Sibley ◽  
J. Legler ◽  
D. G. Dixon ◽  
D. R. Barton
Keyword(s):  
Environmental Health ◽  
Benthic Macroinvertebrates ◽  
Chronic Toxicity ◽  
Health Assessment ◽  
Pulp Mill ◽  
Benthic Habitat ◽  
Acute And Chronic Toxicity

Biodegradability and toxicity assessment of bleach plant effluents treated anaerobically

2010 ◽  
Vol 62 (6) ◽  
pp. 1312-1319 ◽  
Author(s):  
T. R. Chaparro ◽  
C. M. Botta ◽  
E. C. Pires
Keyword(s):  
Chromosome Aberrations ◽  
Kraft Pulp ◽  
Chronic Toxicity ◽  
Treatment Plant ◽  
Pulp Mill ◽  
Anaerobic Treatment ◽  
Toxicity Assessment ◽  
Daphnia Similis ◽  
Acute And Chronic Toxicity ◽  
Experimental Project

As part of an experimental project on the treatment of bleach plant effluents the results of biodegradability and toxicity assessment of effluents from a bench-scale horizontal anaerobic immobilized bioreactor (HAIB) are discussed in this paper. The biodegradability of the bleach plant effluents from a Kraft pulp mill treated in the HAIB was evaluated using the modified Zahn-Wellens test. The inoculum came from a pulp mill wastewater treatment plant and the dissolved organic carbon (DOC) was used as the indicator of organic matter removal. The acute and chronic toxicity removal during the anaerobic treatment was estimated using Daphnia similis and Ceriodaphnia silvestrii respectively. Moreover, the evaluation of chromosome aberrations (CA), micronucleus frequencies (MN) and mitotic index (IM) in Allium cepa cells were used as genotoxicity indicators. The results indicate that the effluents from the anaerobic reactor are amenable to aerobic polishing. Acute and chronic toxicity were reduced by 90 and 81%, respectively. The largest CA and MN incidence in the meristematic cells of A. cepa were observed after exposure to the raw bleach plant effluent. The HAIB was able to reduce the acute and chronic toxicity as well as chromosome aberrations and the occurrence of micronucleus.

Acute and chronic toxicity studies on Polygonum glabrum in experimental animals

2020 ◽  
Vol 3 (1) ◽  
pp. 7-10
Author(s):  
Saravanakumar A ◽  
Gandhimathi R
Keyword(s):  
Chronic Toxicity ◽  
Clinical Stage ◽  
Herbal Medicines ◽  
Plant Roots ◽  
Root Extract ◽  
Experimental Animals ◽  
Toxicity Studies ◽  
Acute And Chronic Toxicity ◽  
Diuretic Agents

Polygonum glabrum is being used in traditional and folklore medicine to treat pneumonia and jaundice. Plant roots are used in ayurvedic preparations to treat fever and colic. The leaves are used as diuretic agents and process vermifuge action. Plant decoction is also used in the treatment of Rheumatism. Besides having many uses and folklore claims, herbal medicines are to be thoroughly investigated for their toxicity also. Therefore this work is being carried out to examine the toxicity of the drug and established dose is safe to use in the clinical stage. The current research studied the acute and chronic toxicity of Polygonum glabrum root extract in rats. It is proved that there was no change in any parameter tested both in acute and chronic toxicity, which means the extract is safe and non-toxic at the dose of 2g/kg also.

Study of acute and chronic toxicity of homeopathic syrup Stodal

2020 ◽  
pp. 53-58
Author(s):  
S. V. Alekseeva ◽  
A. V. Sorokina ◽  
V. V. Zabrodina ◽  
I. A. Miroshkina ◽  
A. S. Lapitskaya
Keyword(s):  
Chronic Toxicity ◽  
Acute And Chronic Toxicity

scholarly journals Comparison of Joint Effect of Acute and Chronic Toxicity for Combined Assessment of Heavy Metals on Photobacterium sp.NAA-MIE

2021 ◽  
Vol 18 (12) ◽  
pp. 6644
Author(s):  
Nur Adila Adnan ◽  
Mohd Izuan Effendi Halmi ◽  
Siti Salwa Abd Gani ◽  
Uswatun Hasanah Zaidan ◽  
Mohd Yunus Abd Shukor
Keyword(s):  
Heavy Metals ◽  
Chronic Toxicity ◽  
Mixture Toxicity ◽  
Joint Effect ◽  
Antagonistic Effect ◽  
Acute Test ◽  
Acute And Chronic Toxicity ◽  
Toxicological Studies ◽  
Luminescence Inhibition ◽  
Toxicity Unit

Predicting the crucial effect of single metal pollutants against the aquatic ecosystem has been highly debatable for decades. However, dealing with complex metal mixtures management in toxicological studies creates a challenge, as heavy metals may evoke greater toxicity on interactions with other constituents rather than individually low acting concentrations. Moreover, the toxicity mechanisms are different between short term and long term exposure of the metal toxicant. In this study, acute and chronic toxicity based on luminescence inhibition assay using newly isolated Photobacterium sp.NAA-MIE as the indicator are presented. Photobacterium sp.NAA-MIE was exposed to the mixture at a predetermined ratio of 1:1. TU (Toxicity Unit) and MTI (Mixture Toxic Index) approach presented the mixture toxicity of Hg2+ + Ag+, Hg2+ + Cu2+, Ag+ + Cu2+, Hg2+ + Ag+ + Cu2+, and Cd2+ + Cu2+ showed antagonistic effect over acute and chronic test. Binary mixture of Cu2+ + Zn2+ was observed to show additive effect at acute test and antagonistic effect at chronic test while mixture of Ni2+ + Zn2+ showing antagonistic effect during acute test and synergistic effect during chronic test. Thus, the strain is suitable and their use as bioassay to predict the risk assessment of heavy metal under acute toxicity without abandoning the advantage of chronic toxicity extrapolation.

ACUTE AND CHRONIC TOXICITY OF IMIDAZOLIUM-BASED IONIC LIQUIDS ON DAPHNIA MAGNA

2005 ◽  
Vol 24 (1) ◽  
pp. 87 ◽  
Author(s):  
Randall J. Bernot ◽  
Michael A. Brueseke ◽  
Michelle A. Evans-White ◽  
Gary A. Lamberti
Keyword(s):  
Ionic Liquids ◽  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Acute And Chronic Toxicity

scholarly journals Acute and chronic toxicity studies on partially purified hypoglycemic preparation from water extract of bark ofFicus bengalensis

2002 ◽  
Vol 17 (1) ◽  
pp. 58-63 ◽  
Author(s):  
S. Gupta ◽  
R. Shukla ◽  
K. M. Prabhu ◽  
S. Aggrawal ◽  
U. Rusia ◽  
...  
Keyword(s):  
Chronic Toxicity ◽  
Water Extract ◽  
Toxicity Studies ◽  
Acute And Chronic Toxicity

ACUTE AND CHRONIC TOXICITY OF NICKEL TO RAINBOW TROUT (ONCORHYNCHUS MYKISS)

10.1897/03-38 ◽  
2004 ◽  
Vol 23 (9) ◽  
pp. 2221 ◽  
Author(s):  
Kevin V. Brix ◽  
James Keithly ◽  
David K. DeForest ◽  
Jim Laughlin
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Chronic Toxicity ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Acute And Chronic Toxicity

The acute and chronic toxicity of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) to three freshwater invertebrates

1991 ◽  
Vol 10 (8) ◽  
pp. 1073-1081 ◽  
Author(s):  
Gregory T. Peters ◽  
Dennis T. Burton ◽  
Robert L. Paulson ◽  
Steven D. Turley
Keyword(s):  
Chronic Toxicity ◽  
Freshwater Invertebrates ◽  
Acute And Chronic Toxicity
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