Lead: produced from burning 2.2 pounds of wood = 0.1mg to 3 mg.

"Burning 1 kilogram of wood produced as much as 160 micrograms of total dioxins. This result was obtained when various specimens of wood were burned in different stoves. Soot was collected and analyzed by well-designed and documented procedures. Tetrachlorinated, hexachlorinated, heptachlorinated, octachlorinated dioxins were present. The isomers of the dioxins were separated and quantitated. The highly chlorinated dioxins were the major components. In the soot from a series of experiments, their total content ranged from 10 to 167 mg/kg of fuel. The total yields of tetrachlorinated dioxins (TCDDs) ranged from 0.1 to 7.8 mg/kg of fuel."
[Science, Vol. 266 Oct. 21, 1994,T.J. Nestrick and L.L. Lamparski, Anal. Chem. 54, 2292 (1982)].

"With the exception of some very low California readings, all measurements of wood ash with fallout-cesium exceeded - some by 100 times or more - the levels of radioactive cesium that may be released from nuclear plants (about 100 picocuries per kilogram of sludge). Wood ash-cesium levels were especially high in the Northeast" [Science News, 1991]

Press release California Air Resources Board

Date: Jan. 23, 2003
http://www.arb.ca.gov/newsrel/nr012303.htm

We are hoping to get our Woodburning Handbook on the ARB web site soon (the link
provided is only an order form for a hard copy, which is not free).

Tom
--
Thomas J. Phillips
California Air Resources Board, Research Division
1001 - I St., POB 2815, Sacramento, CA 95812
916.322.7145 PHONE / .4357 FAX
Indoor Air Quality Guidelines:  http://www.arb.ca.gov/research/indoor/indoor.htm

Research summaries:  http://www.arb.ca.gov/research/indoor/resnotes.htm
Customer feedback:  http://www.arb.ca.gov/calepa/cepacsur.htm
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The energy challenge facing California is real. Every Californian
needs to take immediate action to reduce energy consumption. For
a list of simple ways you can reduce demand and cut your energy
cost, see our web site at http://www.arb.ca.gov.
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For tips on home energy saving and improving IAQ, see
http://www.homeenergy.org/tocs.html