28.02.2013 Views

Handbook of Solvents - George Wypych - ChemTech - Ventech!

Handbook of Solvents - George Wypych - ChemTech - Ventech!

Handbook of Solvents - George Wypych - ChemTech - Ventech!

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

20.9 Toxicity <strong>of</strong> environmental solvent exposure for brain, lung and heart 1405<br />

effects. One possible explanation is greater sensitivity <strong>of</strong> measurements but many <strong>of</strong> the<br />

methods were adapted from studies <strong>of</strong> workers. 2<br />

Table 20.9.1. Sources <strong>of</strong> environmental exposure to solvents<br />

Processes Chemicals Media Example<br />

Losses during refining and<br />

chemical production<br />

Losses from use in industry TCE + toluene<br />

Leaks and spills during transportation<br />

(pipeline, truck, rail, ship)<br />

Combustion:<br />

a. Fires as incidents,<br />

b. Incineration <strong>of</strong> fuel air pollution<br />

c. Incineration <strong>of</strong> garbage<br />

MTBE air Seymour, IN, Santa Maria, CA<br />

toluene,<br />

xylene, PAH<br />

hydrocarbon<br />

particles<br />

water surface,<br />

ground water, air,<br />

water<br />

air<br />

air<br />

Phoenix, AZ, Motorola, Printers,<br />

Baton Rouge, LA, Abuse-glue<br />

sniffers<br />

Avila Beach, CA, Livington<br />

Parish, LA<br />

Wilmington, CA,<br />

San Bernardino, CA, Los Angeles,<br />

Houston, TX, Mexico City<br />

Oak Ridge, TN, Walker, LA<br />

Contaminated sites TCE water, ground water 800 national hazardous acid pits<br />

Outgassing indoors <strong>of</strong> forest products-like<br />

particle board, carpets,<br />

drapes, adhesives<br />

TCA air<br />

Indoor air incidents, Sick building<br />

syndrome<br />

+ - other chlorinated solvents; TCA - trichloroethane; MTBE - methyl ter butyl ether, additive in gasoline; PAH -<br />

polyaromatic hydrocarbons, example benzo(a)pyrene<br />

Table 20.9.2. Differences in environmental and occupational toxicology<br />

Occupational Environmental<br />

Subjects<br />

health<br />

healthy<br />

chronic illness<br />

age, years<br />

18-60<br />

0-100<br />

selection positive<br />

selected for employment unselected<br />

Duration<br />

attenuated by losses <strong>of</strong> sick sick collect<br />

in a week<br />

40 hours<br />

168 hours<br />

total<br />

years<br />

lifetime<br />

Source<br />

raw materials<br />

processes<br />

leaks and spills (gasoline)<br />

outgassing <strong>of</strong> consumer goods<br />

fuel combustion<br />

Chemical exposure one or few many<br />

Monitoring exposure area or personal rarely possible<br />

Environmental transformation<br />

<strong>of</strong> agents<br />

unusual frequent

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!