Aerial Mineral and Organic Particulate Deposition in East Texas

<p>This study determined the monthly amount, particle size distribution, and chemical composition of particulate deposition in East Texas over a one-year period. It also recognized the seasonal patterns of this deposition as well as its primary origins as either mineral or organic particulate deposition.</p> <p>The study recorded the monthly mass of deposition, particle size distribution, and the chemical makeup of deposition throughout a period of twelve months at seven sampling locations. SEM-EDS technology was used in conjunction with PCI programming to measure the sizes of depositional particles throughout this time period and identify their chemical composition.</p> <p>The total yearly deposition recorded in this study was 22.9865 kg/ha. Of this yearly deposition, 8.5582 kg/ha was Si deposition, 2.2923 kg/ha was C deposition, 1.4394 kg/ha was Ba deposition, 1.4679 kg/ha was Na deposition, 1.4679 kg/ha was Al deposition, 0.3146 kg/ha was Ca deposition, 0.7846 kg/ha was K deposition, and 1.4679 kg/ha was Fe deposition. Si deposition had a monthly range of 0.1939 kg/ha – 1.5393 kg/ha, C deposition had a monthly range of 0.0262 kg/ha – 0.6871 kg/ha, Ba had a monthly range of 0.0380 kg/ha – 0.2984 kg/ha, Na had a monthly range of 0.0330 kg/ha – 0.3619 kg/ha, Al had a monthly range of 0.0330 kg/ha – 0.3619 kg/ha, Ca had a monthly range of 0.0022 kg/ha – 0.0958 kg/ha, K had a monthly range of 0.0190 kg/ha – 0.1714 kg/ha, and Fe had a monthly range of 0.0330 kg/ha – 0.3619 kg/ha. Mean particle size increased from January 2019-April 2019.</p> <p>Particle size increased during high pollen months. Elements found in soils tended to make up a larger percentage of the deposition during drier months.</p>

Name thesis:degree_name

Master of Science - Environmental Sciences

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Environmental Science

Year dc:date.available

2020

Author dc:creator

• Caton, Sarah

Contributors dc:contributor

• Dr. Kenneth Farrish
• Dr. Sheryll Jerez
• Dr. Josephine Taylor

• Particulate Matter
• Mineral
• Organic
• Deposition
• EDS
• SEM
• Environmental Indicators and Impact Assessment
• Environmental Monitoring
• Other Environmental Sciences

Repository record dc:identifier

https://scholarworks.sfasu.edu/etds/356

OAI identifier oai:identifier

oai:scholarworks.sfasu.edu:etds-1376