Presentation Title

4-Nonylphenol and its Effects on the Environment

Faculty Mentor

Rebecca Lyons

Start Date

18-11-2017 10:00 AM

End Date

18-11-2017 11:00 AM

Location

BSC-Ursa Minor 120

Session

Poster 1

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Nonylphenol Polyethoxylate (NPPE) is a surfactant that is used in pesticides and detergents; it degrades to 4-nonylphenol (4-NP), a branched molecule with an aromatic group that mimics 17-β-Estradiol, or estrogen. This leads to several adverse health effects. 4-NP is biologically active at concentrations as low as 3 ppb [1].This research looks at the concentrations of 4-NP found attached to particulate matter such as sediment and black carbon categorized by size, the percentage of organic carbon present and at various temperatures. 4-NP is transported by wind. 4-NP binds to particulate matter which wind carries and deposits. My research is primarily based around the Palisade Glacier in the Eastern Sierra Nevadas. Snow samples were on the glacier as well as water samples from nearby lakes. Particle sizes considered are 63, 125, 250 and 500 µm. Temperature ranges are room temperature and at 4 degrees Celsius. The particles are dosed with a standard solution of 4-NP and left stationary or agitated via shaker plate. The samples are analyzed every 5 days by Gas Chromatography Mass Spectrometer and Flame Elemental Analysis. This will determine if 4-NP is binding to particulate matter and being released into ecosystems. 4-NP has previously been shown to bind to smaller sediment particles <500 µm. Glacial flour is a term used to describe fine grain particles that form by glaciers grind sediment down for hundreds of years. High organic carbon content particulates cause glaciers to melt faster, which leads to more small particulate matter being released downstream. The purpose of this research is to determine if the glacial flour is being released into lakes downstream of the glacier are responsible for carrying 4-NP.

References:

[1] Vazquez-Duhalt, R.; Marquez-Rocha, F.; Ponce, A. F.; Viana, M. T. Applied ecology and Environmental Research 2006, 4(1),1-25

Summary of research results to be presented

Small particles carry an endocrine disruptor into glaciers. Glaciers melt and carry it downstream into the environment.

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Nov 18th, 10:00 AM Nov 18th, 11:00 AM

4-Nonylphenol and its Effects on the Environment

BSC-Ursa Minor 120

Nonylphenol Polyethoxylate (NPPE) is a surfactant that is used in pesticides and detergents; it degrades to 4-nonylphenol (4-NP), a branched molecule with an aromatic group that mimics 17-β-Estradiol, or estrogen. This leads to several adverse health effects. 4-NP is biologically active at concentrations as low as 3 ppb [1].This research looks at the concentrations of 4-NP found attached to particulate matter such as sediment and black carbon categorized by size, the percentage of organic carbon present and at various temperatures. 4-NP is transported by wind. 4-NP binds to particulate matter which wind carries and deposits. My research is primarily based around the Palisade Glacier in the Eastern Sierra Nevadas. Snow samples were on the glacier as well as water samples from nearby lakes. Particle sizes considered are 63, 125, 250 and 500 µm. Temperature ranges are room temperature and at 4 degrees Celsius. The particles are dosed with a standard solution of 4-NP and left stationary or agitated via shaker plate. The samples are analyzed every 5 days by Gas Chromatography Mass Spectrometer and Flame Elemental Analysis. This will determine if 4-NP is binding to particulate matter and being released into ecosystems. 4-NP has previously been shown to bind to smaller sediment particles <500 >µm. Glacial flour is a term used to describe fine grain particles that form by glaciers grind sediment down for hundreds of years. High organic carbon content particulates cause glaciers to melt faster, which leads to more small particulate matter being released downstream. The purpose of this research is to determine if the glacial flour is being released into lakes downstream of the glacier are responsible for carrying 4-NP.

References:

[1] Vazquez-Duhalt, R.; Marquez-Rocha, F.; Ponce, A. F.; Viana, M. T. Applied ecology and Environmental Research 2006, 4(1),1-25