To display this page you need a browser with JavaScript support. TEAM DEAD WEIGHT STUDYS SOLUBILITY OF TOXIC LEAD WHEEL WEIGHTS

Our lead wheel weight educational awareness hypothesis is:
"If the public becomes more aware of the environmental dangers of
lead wheel weights and is given alternative wheel balancing choices then
there will be a decrease in lead entering the environment." TEAM DEAD WEIGHT

Our team lead wheel weight experimental hypothesis is:
"If lead wheel weights are exposed to natural environmental conditions
then soluble hazardous lead compounds will be formed.”

Team Dead Weight 
Collection Site Cookson Home Room #1
Collection Town West Branch, Iowa
Collection Date/Time 12/15/2008  4:00 p.m. analyzed
Sample Description Control and sample solutions to be rotated or shaken 02/01/29 to
2/2/2006
Date Time Date Time Date Time Date Time Total time rotated Total time in solution Weight before rotation (g) Weight ater rotation (g) Weight Total Lead Concentration
Bottle # Description Weight Added Rotation Started Rotation Stopped Weight Removed Loss/Gain µg/Liter Note
1-4 Distilled H20 Control 01/02/09 01/02/09 14:10 01/03/09 8:10 18:00 N/A N/A < 1.0
1-5 Rainwater Control 01/02/09 01/02/09 14:10 01/03/09 8:10 18:00 N/A N/A 2 1
1-6 Dilute Vinegar Solution Control* 12/31/08 12/31/08 16:00 01/01/09 10:00 18:00 N/A N/A 22 1
1-7 Salt/sand control with Rain H20 12/31/08 12/31/08 16:00 01/01/09 10:00 18:00 N/A N/A 6
1-8 Rainwater with Lead wheel weight (w.w.) 01/02/09 14:07 01/02/09 14:10 01/03/09 8:10 01/03/09 8:23 18:00 18:16 14.3051 14.3019 -0.0032 189 1
1-9 Distilled H20 with Lead w.w. 01/02/09 14:07 01/02/09 14:10 01/03/09 8:10 01/03/09 8:24 18:00 18:17 14.3688 14.3668 -0.002 856 1
1-10 Dilute Vinegar Solution with Lead w.w. 01/02/09 14:07 01/02/09 14:10 01/03/09 8:10 01/03/09 8:25 18:00 18:18 14.3231 14.0159 -0.3072 385,000[1] 1
1-11 Distilled H20 with Steel w.w. 12/31/08 15:57 12/31/08 16:00 01/01/09 10:00 01/01/09 10:33 18:00 18:36 6.9484 6.9469 -0.0015 50
1-13 Dilute Vinegar Solution with Steel w.w. 12/31/08 15:57 12/31/08 16:00 01/01/09 10:00 01/01/09 10:35 18:00 18:38 6.8802 6.8578 -0.0224 37
1-14 Rainwater with Steel w.w. 12/31/08 15:57 12/31/08 16:00 01/01/09 10:00 01/01/09 10:35 18:00 18:38 7.0089 7.0077 -0.0012 4
1-18 Salt/sand /Rain H20 with Lead w.w. 01/02/09 14:07 01/02/09 14:10 01/03/09 8:10 01/03/09 8:27 18:00 18:20 14.3617 14.149 -0.2127 2190 1, 3
1-982 Salt/sand /Rain H20 with Steel w.w.[2] 12/31/08 15:57 12/31/08 16:00 01/01/09 10:00 01/01/09 10:40 18:00 18:43 7.0428 7.0177 -0.0251 3 2
*Dilute vinegar solution made with 56.3 mL white table vinegar and 443.3 ml distilled H20 - pH = 2.9-3
Note 1 Slight leakage from bottle during rotation
Note 2 Due to turbity, solution decanted into another clean bottle in order to locate and remove weight 
Note 3 Due to turbity, weight located and removed with steel forceps
[1]
1newowner:
[2]
1newowner:


Science research team "Dead Weight" recognizes the 
need to protect the public from exposure to lead hazards. 
There are no federal regulatory controls governing use of lead 
wheel weights. Environmental health hazards associated with lead 
wheel weights are a preventable problem. People are exposed to 
lead fragments and dust when lead wheel weights fall from motor 
vehicles onto the nation's roadways and are then abraded and 
pulverized by traffic. Lead wheel weights on and alongside roadways 
can contribute to soil, surface and groundwater contamination and 
pose hazards to downstream aquatic life.
       Lead negatively affects every bodily system. While it is 
injurious to people of all ages, lead is especially harmful to 
fetuses,children, and adults of childbearing age. Effects of lead 
on a child's cognitive, behavioral, and developmental abilities may 
necessitate large expenditures of public funds for health care and 
special education. Irreversible damage to children and subsequent 
expenditures could be avoided if exposure to lead is reduced.
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