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Is My Drywall Chinese? - HB Litigation Conferences

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Sulfur Dioxide<br />

Short term exposure to high levels can be life-<br />

threatening (IDLH = 100 ppm)<br />

Exercising asthmatics are sensitive to respiratory<br />

effects at 0.25 ppm (250 ppb) SO 2<br />

Longer-term Longer term exposures to high levels of SO 2 gas<br />

and particles cause respiratory illness and<br />

aggravate existing heart disease<br />

Sulfate particles collect in lungs—increase<br />

lungs increase<br />

respiratory symptoms and disease, difficulty in<br />

breathing, premature death<br />

Sulfur Dioxide<br />

Significant increases in airway resistance in<br />

moderately exercising asthmatics at 400<br />

ppb-1.0 ppb 1.0 ppm<br />

Two most sensitive asthmatics exhibited<br />

bronchoconstriction at inhalation of<br />

100 ppb sulfur dioxide for 10 minutes

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