Date of Award

Spring 2018

Document Type

Honors Thesis

Degree Name

Bachelor of Science

Department

Chemistry

First Advisor

Dr. Dansby-Sparks

Second Advisor

Dr. Dalman

Third Advisor

Dr. Giles

Abstract

1-naphthyl methylcarbamate or carbaryl remains one of the most commonly used pesticides. It has neurotoxic properties, thus making it important to understand the longterm effects of its chemical persistence in environmental systems. In this study, fluorescence was used to determine the concentration of carbaryl pesticides in aquatic systems. Samples were collected over a period of 48 hours from an empty fish tank with an initial carbaryl concentration of 28μg/L in both dark and ambient light conditions. Fluorescence was then used to determine the concentration of carbaryl using an emission wavelength of 336nm and an excitation wavelength of 270nm over time. This was a baseline study conducted to be used as comparison values to future experiments on the rate of carbaryl degradation when fish are introduced into the system. Despite photosensitivity, there was only a small difference in the determined rate constants of the light vs. dark trials with carbaryl half-lives of 24.35 and 30.67 days, respectively.

Included in

Chemistry Commons

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