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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX5-97<br />

Table AX5-6.11. Genotoxic/Carcinogenic Effects <strong>of</strong> <strong>Lead</strong>—Genotoxicity Non-mammalian Cultures<br />

Compound Assay and Concentration Cell Type Co-exposure Effects Reference<br />

Pb chromate<br />

(and 13<br />

pigments<br />

containing Pb<br />

chromate)<br />

Mutation Frequency (50–500 µg/plate)<br />

Anchorage Independence <strong>for</strong> cells isolated<br />

during morphological trans<strong>for</strong>mation<br />

Neoplastic Trans<strong>for</strong>mation <strong>for</strong> cells<br />

isolated during morphological<br />

trans<strong>for</strong>mation<br />

Salmonella<br />

typhimurium +/- S9<br />

fraction<br />

Nitrilotriacetic acid<br />

(NTA to dissolve<br />

insoluble compounds)<br />

and Silica<br />

Encapsulation<br />

Pb chromate and its related pigments did not induce<br />

mutagenicity.<br />

A few did when dissolved in NTA.<br />

Encapsulation prevented mutagenesis in those that<br />

were positive when dissolved in NTA.<br />

S9 had no effect.<br />

Studied as a chromate compound.<br />

Connor and Pier<br />

(1990)

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