Assessing lead body burden and doseresponse relationships of this metal by blood lead determination, porphyrin assessments, chelation testing or bone lead studies may be difficult.

ENGINEERING SERVICE DIVISION RDSscak Atch TEH 0470040 EFFECTS OF AIR LEAD, SOIL LEAD, AND HOUSEHOLD DUST LEAD ON BLOOD LEAD LEVELS IN CHILDREN Summary A review of the Silver Valley and Omaha lead studies was made to determine the importance of the affects of air lead, soil lead, and household dust lead on blood lead levels in children.

However* this does not necessarily mean that there is a relationship between blood lead and gasoline lead usage.

Occasional cases of lead exposure have occurred from lead dust in shooting galleries, artists' paint pigments, fumes from burning painted wood, jewellers' waste, lead type, and soluble lead compounds in old lead pipes/ Occupational exposure of workers in lead smelting and in storage-battery factories has been greatly reduced by regulations ensuring appropriate preventive measures,4 Chemistry Lead is a bluish or silvery-grey soft metal.

It relates blood lead to total lead exposure to dividing lead exposure into two parts -- air lead exposure and background lead exposure (ie, food, water, etc).

It relates blood lead to total lead exposure by dividing lead exposure Into twoparts--air lead exposure wad background lead exposure (be., food, water, etc.).

These two items, decline in gasoline lead usage and decline in blood lead, were linked together resulting in the widely pub licized claim that the decline in blood lead usage was solely Caused by the reduction in gasoline lead usage (Slide 2).

About half of present lead production and use is devoted to the manufacture of lead-acid batteries.

Photo/Bags of lead compounds Type over/Dibasic lead phosphite Dibasic lead phthalate Dibasic lead stearate Lead carbonate Tribasic lead sulfate Common types of lead materials we use in the plant include: dibasic lead phosphite; ^ dibasic lead phthlate; dibasic lead stearate; lead carbonate; and tribasic lead sulfate. 34.

Lead Effects on the Cardiovascular System Lead has long been reported to be associated with cardiovascular effects, in both human adults and children.

Soil Lead and Blood Lead 6.

* Lead and lead compounds include all forms of lead, metallic, inorganic, and organic, including organolead compounds such as tetramethyl- and tetraethyllead and lead naphthenate.

The site-specific lead density then was calculated by dividing county lead use by county area.

Lead toxicity.

When both lead paint exposure variables and gasoline lead use were considered simultaneously, gasoline lead use was not significantly correlated with the incidence of blood lead levels above 30/ug/dl (or above 49 ug/dl) but lead paint exposure variables were.