Thesis (M.S.)--Ball State University, 2009. / Title from PDF t.p. (viewed on June 08, 2010). Includes bibliographical references (p. [70]-71).

Thesis (Ph. D.)--University of Rhode Island, 2005. / Typescript. Includes bibliographical references (leaves 120-131).

Thesis (M.S.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains vii, 83 p. : ill. (some col.), col. maps. Includes abstract. Includes bibliographical references.

Please read the abstract in the section 00front of this document / Dissertation (MSc)--University of Pretoria, 2005. / School of Health Systems and Public Health (SHSPH) / Unrestricted

Although much progress has been made in the United States, childhood lead poisoning remains a critical environmental health problem. Lead causes many problems such as learning disabilities, coma, and even death. Many studies have focused on these problems in the last three decades, but Geographic Information System (GIS) technology has only been employed since the 1990s. In addition, no research has examined the differences among the models based on the different geographic locations and size of cities. In this study, screening results of childhood lead levels in Indiana are evaluated based on a census tract geography. The relationship between the number of children less than six years old with elevated Blood Lead Levels (BLLs) and social-economic factors such as percentage of children in poverty and age of housing stock are examined for selected urban areas in Indiana. Stepwise and backward elimination are used to choose the independent variables and least squares regression methods are used to build evaluation models according to the location and size of urban areas in Indiana. Finally, a comparison is made among these models to examine whether there is any difference according to city size and location, and whether a state level model would be suitable for the selected urban areas. The results show that backward elimination is a better way to select the independent variables in most of the models. The census tracts with high value of residuals are located in the outer periphery of most urban areas. For some models, the residuals are lower in the census tracts with a high ratio of children screened. The results also manifest that some of the same parameters exist in the models of the same urban size or location in Indiana and geographic factors could be potential elements in building model for children’s EBLLs. None of the models have exactly the same parameters. In addition, the comparison shows that the state model is not as accurate as the urban area models. How to balance the weakness of both state model and urban area model could be an extension for further study. / Department of Geography

Thesis (M.A.)--Northern Kentucky University, 2006. / Made available through ProQuest. Publication number: AAT 1437768. ProQuest document ID: 1203575531. Includes bibliographical references (p. 72-78)

Thesis (M. Heal. Sc.)--University of Canterbury, 2009. / Typescript (photocopy). Includes bibliographical references (leaves 85-88). Also available via the World Wide Web.

Lead is a global health hazard and reducing environmental exposures to lead is becoming increasingly important as negative health impacts are documented at lower levels of exposure. Soils, an important source of lead exposure in children, represent a largely untested reservoir of accumulated past and present lead contamination retained in the surface. Concentrations of soil lead are very spatially heterogeneous, however, and testing is required to identify whether site-specific soils present a hazard. In this dissertation I outline the several ways to increase testing and awareness about soil-lead contamination to provide individuals with the information needed to prevent exposure to soil lead. Chapter one presents a new field procedure for use by the general public to screen soils for hazardous levels of lead that is based on determining bioaccessible lead. Chapter two describes the delineation of soil-lead hotspots in four mining-impacted towns in Peru and reveals that parents using the field procedure identified a hotspot missed by previous testing. In this study, we find child blood lead information is associated with parent cleanliness, which may represent a pathway for child exposure to dust and soil lead, although no associations are seen directly with soil lead concentrations. In chapter three, Peruvian high school students use the field procedure in their science classes to identify hotspots of soil lead and share this information with their community. Finally, chapter four highlights that extremely elevated concentrations of soil lead are not limited to far-off mining communities but are also present locally in New York City. Soil core data collected does not reveal a single source or blanket atmospheric inputs, but rather highlights the variability of deposition that requires widespread testing.

Indiana University-Purdue University Indianapolis (IUPUI)

Includes bibliographies. / xiv, 233, [102] leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis examines the relationship between environmental lead exposure and later emotional and behavioural problems experienced by 11-13 year old children enrolled in the Port Pirie Cohort Study (PPCS). The PPCS is the first study to monitor prospectively the association between lifetime blood lead exposure and children's behaviour. Prenatal and postnatal measures of lead exposure are collected from birth along with a large number of biomedical, socio-environmental and familial factors that might confound the relationship between lead exposure and children's behaviour. / Thesis (Ph.D.)--University of Adelaide, Dept. of Psychiatry, 1997