Beyond his scientific contributions, Henderson acted as a leading advocate of public health, especially in his opposition to the use of tetraethyl lead in gasoline in the early 1920s.
22.
Most of the problems with lead comes from lead-containing compounds, such as tetraethyl lead and lead paint, which are soluble in body tissues and much easier to ingest into the body.
23.
Soon after, students at the Instituto Polit�cnico Nacional and the National Autonomous University of Mexico were able to synthesize tetraethyl lead, a popular gasoline additive at the time used for boosting octane ratings.
24.
Taking cue from the domestic programs, the U . S . Agency for International Development undertook an initiative to reduce tetraethyl lead use in other countries, notably its efforts in Egypt begun in 1995.
25.
He wrote respectfully to Pierre S . DuPont, chairman of GM, in November 1922, asking if the company had collected " any data " on the possible health effects of manufacturing and using tetraethyl lead.
26.
Ethyl's tetraethyl lead is manufactured by Great Lakes Chemical Corp . of West Lafayette, Ind . It is sold to Ethyl to market in an arrangement in which Ethyl provides oceangoing tankers for both companies.
27.
All U . S . market Hornets featured catalytic converters and now required gasoline without tetraethyl lead . " Unleaded Fuel Only " warnings were displayed on both the fuel gauge and on a decal by the fuel filler.
28.
He determined, through ice-core samples from Greenland, that atmospheric lead levels had begun to increase steadily and dangerously soon after tetraethyl lead began to see widespread use in fuel, when it was discovered to reduce engine knock in internal combustion engines.
29.
The Ethyl Corporation, a joint venture of General Motors and Standard Oil, built a plant for the manufacture of tetraethyl lead ( TEL, the " lead " in leaded gasoline ) at the refinery over the course of three months in 1924.
30.
The stranding was the cause of one of Cape Town's earliest great environmental scares, owing to the cargo including drums of tetramethyl lead and tetraethyl lead, volatile and highly toxic compounds that in those days were added to motor fuels as an anti-knocking agent.
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