Sampling and analysis of lead in paints
Sampling and analysis of lead in paint
Ingested or inhaled, lead presents a serious toxicological profile for individuals in contact with it. The presence of lead in a product or environment is subject to stringent regulations, particularly in the cosmetics and construction (paint) sectors.
In Quebec and Canada, surfaces such as walls, floors and ceilings, as well as other elements and equipment in most buildings erected before 1990, may be covered with lead-containing paints. These paints are harmless when in good condition, but can represent a risk to human health if deteriorated, or if work is undertaken without adequate protection.
According to the World Health Organization (WHO), certain groups of people, notably the fetus, infants, children and pregnant women, are generally more sensitive to the harmful effects of lead, even at low concentrations.
To determine whether paint present in a building poses a risk to workers, samples of each paint, including undercoats, must be taken and subjected to two types of analysis. The extractable lead test is carried out on a sample of paint flakes to determine whether the paint contains lead and presents a risk to human health.
In addition, the leaching test is used to determine whether the lead present in the paint dissolves in water in excess of the permitted limit of 5 mg/L.
Although acute lead poisoning is uncommon today, chronic poisoning remains prevalent. The chronic toxicity of this metal and its compounds demands special attention. The implementation of control measures to eliminate lead at source remains a priority in occupational health and safety. However, while reducing the presence of the contaminant at source, there are a number of simple and achievable measures that can make a significant contribution to reducing exposure and the risk of intoxication.
ingestion which, in the case of lead, are the main routes of absorption.
Appropriate removal procedures must therefore be followed to limit the risks to workers and the environment.
How can we help you
If you are planning to carry out any work, or if the customer asks you to submit a report to determine whether or not there is lead in the paint, don't hesitate to call or write to us, and we'll be happy to help.