1 2 3 4 5 6 7 8 9 10 next
Download a PDF version of the content in this article:
EPA's Lead in Your Home: A Parent's Reference Guide
EPA's Lead Poisoning and Your Children
EPA's Protect Your Family From Lead in Your Home
EPA's Testing Your Home for Lead in Paint, Dust, and Soil
EPA's Lead and a Healthy Diet
EPA's Reducing Lead when Remodeling
- Lead exposure can be dangerous, especially to children ages 6 and younger.
- Exposure to lead-contaminated dust, not lead-based paint is the most common way to get lead poisoning.
- Lead poisoning can be prevented.
Lead is highly toxic. Exposure to it can be dangerous, especially for children who are 6 or younger. But lead is also stable and easy to work with, so it has been used for many purposes. even in our homes. It is important that every parent know where lead can be found, and how to control it. It is also important to know what to do if you or a member of your family is exposed to lead.
How Lead Has Commonly Been Used
Lead is a metal that has been mined for thousands of years. In the past, it was used to make common items found in or near homes. These items include paint, gasoline, water pipes, and food cans.
Lead in paint. Manufacturers used to put lead pigments in paint because the pigments make the paint last longer and cling to surfaces better. But problems can occur later. Paint that is disturbed or that is breaking down with age can contaminate dust. Lead-based paint is no longer used in homes, on children's toys, or on household
furniture. In 1978, the Consumer Product Safety Commission (CPSC) banned its sale for use in residences. That same year the CPSC also made it illegal to paint children's toys and household furniture with lead-based paint.
Lead in gasoline. Oil companies used to add lead to gasoline to stop engine knocking in automobiles, but dangerous lead particles escaped into the air through auto exhaust systems. In 1978, the U.S. Environmental Protection Agency (EPA) reduced the amount of lead allowed in gasoline.
Lead in household pipes. Lead used in fixtures, pipes, or pipe soldering can leach into water that flows through the pipes. In 1986, and again in 1988, Congress changed the Safe Drinking Water Act to restrict the use of lead in pipes, solder, and other components used in public water systems and residential and nonresidential plumbing. Unfortunately, lead may still be found in pipes today.
Lead in food cans. The lead solder used to seal food cans can mix with the food in the can. The United States banned the use of lead solder in cans in 1995, but it is still used in many other countries. Lead solder may be found in cans imported to the United States.
Lead has long been recognized as a harmful environmental pollutant. In late 1991, the Secretary of the Department of Health and Human Services called lead the "number one environmental threat to the health of children in the United States." There are many ways in which humans are exposed to lead: through air, drinking water, food, contaminated soil, deteriorating paint, and dust. Airborne lead enters the body when an individual breathes or swallows lead particles or dust once it has settled. Before it was known how harmful lead could be, it was used in paint, gasoline, water pipes, and many other products.
Old lead-based paint is the most significant source of lead exposure in the U.S. today. Harmful exposures to lead can be created when lead-based paint is improperly removed from surfaces by dry scraping, sanding, or open-flame burning. High concentrations of airborne lead particles in homes can also result from lead dust from outdoor sources, including contaminated soil tracked inside, and use of lead in certain indoor activities such as soldering and stained-glass making.
[From "The Condensed Chemical Dictionary, 9th ed., Van Nostrand Reinhold Company, New York, 1977.] Metallic element of atomic number 82, Group IVA of the periodic table. Atomic weight 207.2; valences 2, 4; 4 stable isotopes. The isotopes are the end products of the three series of natural radioactive elements uranium (206), thorium (208), and actinium (207).
Properties — Heavy, ductile, soft gray solid. Sp. gr. 11.35; m.p. 327.4oC; b.p. 1755oC; soluble in dilute nitric acid; insoluble in water but dissolves slowly in water containing a weak acid; resists corrosion; relatively impenetrable to radiation. Poor electrical conductor; good sound and vibration absorber. Non-combustible.
Sources of Lead: Lead-based paint, contaminated soil, dust, and drinking water.
Lead Health Effects
Lead affects practically all systems within the body. Lead at high levels (lead levels at or above 80 micrograms per deciliter of blood) can cause convulsions, coma, and even death. Lower levels of lead can cause adverse health effects on the central nervous system, kidney, and blood cells. Blood lead levels as low as 10 micrograms per deciliter can impair mental and physical development. EPA's Integrated Risk Information System profile on Lead and Lead Compounds - epa.gov/iris/subst/0277.htm
The effects of lead exposure on fetuses and young children can be severe. They include delays in physical and mental development, lower IQ levels, shortened attention spans, and increased behavioral problems. Fetuses, infants, and children are more vulnerable to lead exposure than adults since lead is more easily absorbed into growing bodies, and the tissues of small children are more sensitive to the damaging effects of lead. Children may have higher exposures since they are more likely to get lead dust on their hands and then put their fingers or other lead-contaminated objects into their mouths.
Get your child tested for lead exposure. To find out where to do this, call your doctor or local health clinic. For more information on health effects, get a copy of the Centers for Disease Control's (CDC - www.cdc.gov), "Preventing Lead Poisoning in Young Children."
Finding Lead Hazards in Your Home
Changes in the law have greatly reduced the amount of lead in our homes and in the air today. But it is important to remember that lead does not break down over time. Therefore, you should know how to identify sources of lead in your home and how to keep your family safe.
Changes in the law have greatly reduced the amount of lead in our homes and in
the air today. But it is important to remember that lead does not break down over
time. Therefore, you should know how to identify sources of lead in your home and
how to keep your family safe.
Finding Lead Hazards In Your Home
The most common household lead
hazards are lead-based paint, lead dust, and contaminated soil.
Lead-based paint is a hazard if it is peeling, chipping,
chalking, or cracking. Even lead-based paint that appears to be undisturbed can be a
problem if it is on surfaces that children chew or that get a lot of wear and tear.
These areas include: windows and window sills; doors and door frames; stairs,
railings and banisters, porches, and fences. Even surfaces that have been covered
with new paint or another covering can expose older lead-based paint layers when they
become cracked or chipped. The older your home is, the more likely it is to contain
Dust can become contaminated with lead when lead-based
paint is dry scraped or sanded. Dust can also become contaminated when painted
surfaces bump or rub together. Lead chips and dust can gather on surfaces and
objects that people touch or that children put into their mouths.
Soil can become contaminated when exterior lead-based
paint from houses, buildings, or other structures flake or peels and gets into the
soil. Soil near roadways may also be contaminated from past use of leaded gasoline
in cars. Avoid these areas when planting vegetable gardens.
Older plumbing fixtures:
Older plumbing fixtures, such as faucets, lead pipes, and
pipes connected with lead solder, can contaminate drinking water. Older water well
pumps made with brass or bronze parts that contain lead can also contaminate drinking
water. The amount of lead in your water depends on the types and amounts of
minerals in the water, how long the water stays in the pipes, the amount of wear in the
pipes, the water's acidity, and its temperature. Lead can leach into water at any
temperature, but the amount of lead can be much greater when the water is hot or warm, so
don't drink or cook with water from the "hot" faucet. Carbon, sand, and
cartridge filters do not remove lead from water, although some filters are
"certified" for lead removal. Boiling your water will not get rid of the
Some imported, non-glossy, vinyl mini-blinds can be a lead
hazard, especially to young children. Sunlight and heat can break down the blinds
and may release lead-contaminated dust. Children who touch the
mini-blinds and put
their fingers in their mouths may ingest the lead particles. It's best to remove
these blinds if you have children who are 6 or younger. If you purchase new
mini-blinds, look for products with labels that say "new formulation,"
"non-leaded formula," "no lead added," or "New!
Non-leaded vinyl formulation."
Painted toys and household furniture:
Painted toys and household furniture made before 1978 may
be painted with lead-based paint. Do not let children chew on any older, painted
toys or furniture, such as cribs or playpens.
Lead-glazed ceramic ware, pottery, and leaded
Food and liquids can absorb lead and become contaminated
when stored in these items. Lead may be present in some glassware and in glazes
found on ceramic wares.
Exposed to lead at your job site:
If you are exposed to lead at your job site, you could
bring lead dust home on your clothes, shoes, hair, or skin. Lead smelters or other
industries can release lead into the air.
Hobbies such as making pottery, working with stained
glass, or refinishing furniture can expose you to lead hazards. Try not to work on
these hobbies in your home.
Folk remedies that contain lead can cause lead poisoning.
Two examples are "Greta" and "Azarcon," which
are often used in the Hispanic and Asian communities to treat an upset stomach.
Another is "Pay loo ah," which is a red powder used to treat a rash or
fever. Putting lead into a human body is dangerous, and it does not cure such
1 2 3 4 5 6 7 8 9 10 next
© 2011 - 2015 LazrWeb all rights reserved