alexa Evaluation of Surface Water Quality Impacted by Sewage Overflows from Animal and Residential Lagoon Systems using Principal Component Analysis
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
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Research Article

Evaluation of Surface Water Quality Impacted by Sewage Overflows from Animal and Residential Lagoon Systems using Principal Component Analysis

Abua Ikem1*, Bob Broz2, Jimmie Garth1, Samson Tesfaye1 and Lin Chung-Ho3

1Department of Agriculture and Environmental Sciences, Lincoln University, 904 Chestnut Street, Jefferson City, Missouri 65101,USA

2Department of Agricultural Engineering, University of Missouri, Columbia, Missouri 65211, USA

3Center for Agroforestry and Department of Forestry, University of Missouri, Columbia, Missouri 65211, USA

*Corresponding Author:
Abua Ikem
Department of Agriculture and Environmental Sciences
Lincoln University, 904 Chestnut Street
Jefferson City, Missouri 65101, USA
Tel: +1-573-681-5384
Fax: +1-573-681-5955
E-mail: [email protected]

Received Date: October 02, 2013; Accepted Date: October 22, 2013; Published Date: October 25, 2013

Citation: Ikem A, Broz B, Garth J, Tesfaye S, Lin C (2013) Evaluation of Surface Water Quality Impacted by Sewage Overflows from Animal and Residential Lagoon Systems using Principal Component Analysis. J Environ Anal Toxicol 3:197.doi: 10.4172/2161-0525.1000197

Copyright: © 2013 Ikem A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This study was conducted to: (1) evaluate the water quality of Gans Creek (Missouri, United States), (2) assess the physical and chemical characteristics of two sewage lagoon overflows (confined animal lot lagoon overflow: CALLO, and domestic sewage lagoon overflow: DSLO) discharged into Gans Creek, and (3) understand the most significant analytical variables and major controlling processes influencing Gans Creek water quality using principal component analysis (PCA). Monthly (May 2009-February 2010) sampling was conducted along Gans Creek and at lagoon overflow points. Ammonia-nitrogen (NH3-N) in Gans Creek and the overflows was monitored for another year (March 2010-July 2011) because of its potential toxicity to stream health. Thirty-one variables including pH, electrical conductivity (EC), elemental and anionic species, total nitrogen (TN) and total organic carbon (TOC) were measured in samples. We observed that DSLO samples had the highest level of NH3-N, total phosphorus (TP), TN, TOC and B compared to the corresponding levels in both CALLO and Gans Creek samples. Major stressors for this stream system were dissolved materials and ammonia. PCA showed that the first four rotated components (RC1, RC2, RC3 and RC4) accounted for approximately 60% of the total variability of the dataset. Mineralization (RC1: 20%), sewage overflows (RC2: 19%), diffuse pollution (RC3: 12%), and runoffs from cattle grazing areas (RC4: 9%) were the major controlling processes at the study area. Over twenty water quality determinands were significant in the rotated components. Overflows from the lagoon systems need consistent treatment and management for adequate protection of Gans Creek ecosystem.

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