Related Experiment Video
Updated: Aug 18, 2026

12:59
A System to Create Stable Nanoparticle Aerosols from Nanopowders
Published on: July 26, 2016
[Determination of potential carcinogenicity of nickel-containing dust using a micronuclear test]
Abstract:
Mutagenic activity of 3 samples of nickel-containing dusts was experimentally studied in white random-bred rats. Quantity of micronuclei in polychromatophilic erythrocytes of bone marrow smear depended on nickel dust content. Micronuclear test could be used as a rapid method for the determination of potential carcinogenic activity of polymetallic nickel-containing dusts and also as a factor confirming oncologic hazard of chemical substances combined with epidemiologic studies and chronic experiment on animals.
Related Concept Videos
Mutagenicity and Carcinogenicity
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
Precipitation Gravimetry
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Toxicity Testing in Animals
Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...

