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2009-2010 Union College President's Report, Stephen C. Ainlay

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… 2009-2010 Union College President's Report, Stephen C. Ainlay …
“ … of the College A Message from Union College President Stephen C. Ainlay following page >> pic pic pic pic Union … Report 2009/2010 … , Governor of the State of New York Stephen C. Ainlay, B.A., M.A., Ph.D., President of Union … M.B.A., SRI International Neil M. … . Sarayfah Bolling ’11 Stephen Po-Chedley ’08 “ Students learned more about [the … ”
In President's Report

Type of Resource

DigitalDocument

2006-2007 President's Report to the Community, Stephen Ainlay

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… 2006-2007 President's Report to the Community, Stephen Ainlay …
“ … REPORT TO THE COMMUNITY 13 www.union.edu UNION COLLEGE Stephen PO-CHEDLEY ’08 ENVIRONMENTAL ACTIVIST Udall Scholar and Harry S. Truman Scholarship finalist Stephen Po-Chedley helped create a campus-wide recycling … ”
In President's Report

Type of Resource

DigitalDocument

Untitled (Ddegeya, Uganda)

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Po-Chedley, Stephen
2008-2009
2880

In Union College Permanent Collection

Abstract

landscape of stepped hillside beyond a body of water (lake?)

Type of Resource

VisualArtwork

Untitled (Ddegeya, Uganda)

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Po-Chedley, Stephen
2008-2009
2877

In Union College Permanent Collection

Abstract

landscape of foggy hillside

Type of Resource

VisualArtwork

Untitled (Ddegeya, Uganda)

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Po-Chedley, Stephen
2008-2009
2878

In Union College Permanent Collection

Abstract

black and white image of boy rolling a bicycle tire

Type of Resource

VisualArtwork

Untitled (Ddegeya, Uganda)

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Po-Chedley, Stephen
2008-2009
2879

In Union College Permanent Collection

Abstract

landscape of settting sun, golden orange sky

Type of Resource

VisualArtwork

Untitled (Ddegeya, Uganda)

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Po-Chedley, Stephen
2008-2009
2876

In Union College Permanent Collection

Abstract

small goat running towards shack, figure of a boy to right of building:

Type of Resource

VisualArtwork

Using particle induced x-ray analysis and plasma mass spectrometry to Investigate mercury emissions from anthropogenic sources

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“ … i ABSTRACT Po-Chedley, Stephen Particle Induced X-Ray Emission Spectrometry, PIXE, … MERCURY EMISSIONS FROM ANTHROPOGENIC SOURCES By Stephen Donald Ayres Po-Chedley * * * * * * * * * Submitted … ”
In Honors Theses

Abstract

Inductively Coupled Plasma Mass Spectrometry, ICP-MS, were used to investigate mercury pollution in Norway Spruce tree bark (Picea abies) located downwind from the Huntley coal-fired power plant in North Tonawanda, New York. We predicted that mercury concentration, C, would fall inversely with distance, r, and experimentally determined that after a 5.77 km – 9.47 km deposition delay, mercury concentration fell as C ??r-1.48 with an r2 value of 0.96. PIXE was useful in quickly and non-destructively (experiment could be done repeatedly) determining order of magnitude concentrations for heavy metals with concentrations less than one part-per-million. ICP-MS requires a more involved sample preparation method, but was useful in very precisely determining mercury concentrations. After comparing PIXE to ICP-MS, we found that the two methods were in agreement, although with varying precision. For the comparison sample, we found a PIXE value of 100 ± 70 ?g kg-1 compared to 43 ± 1 ?g kg-1 for ICPMS (mass of mercury per mass of bark). Using the experimental concentration – distance relationship, we found that the Huntley Power Plant had a sphere of influence (mercury concentration above background levels) of 100 – 200 km. Department of Physics and Astronomy, June 2008.

Type of Resource

Thesis

Rights Statement

In Copyright - Educational Use Permitted