Research with Local Impact: Analyzing Lead in Trenton, NJ

At least once a week, without fail, I will stop in the middle of the p-set I am working on, or the paper I am writing, and think “what is the point of this?” Sure, the pursuit of knowledge may be a reward unto itself, but I don’t want my academic goals to be purely selfish–I want my course work at Princeton to benefit others. To this end, I have sought engaging research-based courses that can have a positive impact on people’s lives. These classes combine my academic interests with my desire for meaning, and provide a concrete ‘point’ to my course work.

Sure, the pursuit of knowledge may be a reward unto itself, but I don’t want my academic goals to be purely selfish–I want my course work at Princeton to benefit others.

Last Spring, I participated in GEO 360, Geochemistry of the Human Environment, a course focused on providing chemical analyses of tap-water, paint, and soil for low-income residents of Trenton, NJ. Only 11 miles south of our orange-bubble along the towpath, Trenton is one of the poorest cities in the state and has a serious and systemic lead problem. Lead exposure is caused by the deterioration of lead paint into dust and the leaching of lead from pipes into drinking water. While lead paint was banned in 1978 and installation of lead piping was discontinued in the mid 1980’s, lead is still ubiquitous in Trenton where 90% of homes and buildings were constructed prior to 1978. As homes in the city age, the lead within them becomes mobilized and hazardous, and residents often do not have the financial means to keep their homes safe.

This map shows our measurements of lead concentration in parts-per-billion for water samples from homes around the city. Although most homes do not have high water-lead concentrations, there is no ‘safe’ amount of lead. (Map grid is UTM N zone 18)

Our class worked alongside Isles, a non-profit Trenton organization that has tested over 2,000 homes for lead and provided remediation work–all free of charge–over the past three decades. We assisted Isles with field work by collecting samples, and measuring paint and soil lead in urban residences. We then analyzed hundreds of tap-water samples, measuring elemental concentrations with a mass spectrometer and conducting multivariate analyses to quantify the correlations between metals within samples. Our work helped Isles identify at-risk homes in order to provide them with lead paint remediation and/or water filters.

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All Roads Lead to Gandhara: Integrating Science and the Classics

Around this time last fall, I was spending consistent hours in the basement of Fine Hall, gathering data from the Map Library and struggling with ArcGIS and Matlab to make sense of it. My goal? To explain the success of Gandhara, a little-known ancient civilization in northwest Pakistan.

I first learned about the region during an independent research project in my last semester of high school Latin. Gandhara started as an outpost for Alexander the Great’s generals but grew into an incredible region of diffusion between Greek and Indian cultures. Greek and Buddhist influences merged freely in philosophy, religion, and art, and not much research existed on the area.

Gandhara slipped from my mind until I resumed school in my first semester at Princeton. I was enrolled in FRS 187: Earth’s Environments and Ancient Civilizations, a geoscience seminar that traveled to Cyprus over fall break. In Cyprus, we used geophysics to examine unexcavated areas near a Princeton archeological dig house. As part of the course, we were responsible for writing three scientific papers explaining why a civilization succeeded or failed using topographical, mineral, and climate-based evidence. My mind turned naturally to Gandhara. I wanted to create one comprehensive paper examining its success, but I wasn’t sure that I could find sufficient evidence from three different angles.

This is a map that I created to provide an overview of Alexander’s route into Gandhara and major cities along his way.

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