CHED 1099 |
| Lead exposure has serious human health consequences. Numerous studies after hurricane Katrina suggest that some New Orleans' Neighborhoods have lead levels above 1700mg/kg. EPA and LADEQ cleanup lead level is 400mg/kg. The disparity in Pb levels reported by various agencies was attributed to variation in soil type and sampling depths. We therefore decided to investigate the depth of migration of lead solution in three Coushatta, Louisiana soils (humus, red and brown clay). Lead nitrate (100ml of 3210 ppm)was poured into sieving vessels containing 100g of each type of soil, respectively. The soil samples were divided into top and bottom 1.5 cm layers, dried, homogenized, and prepared for XRF analysis. The results showed that the top 1.5cm soil layer for each soil type contained 3936, 3702, 2963mg/kg of lead, respectively while the next 1.5 cm soil layer contained 970, 1177, and 1247 mg/kg of lead. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |