An Innovative Analytical Workflow for the Analysis of Taste and Odor Compounds in Water
New Organic Monitoring Techniques
Poster Presentation
Prepared by A. Sandy, R. Marfil-Vega, N. Lock
Shimadzu Scientific Instruments, 7102 Riverwood Drive, Columbia, MD, 21046, United States
Contact Information: alsandy@shimadzu.com; 410-910-1869
ABSTRACT
2-Methylisoborneol (2-MIB) and Geosmin are the two major culprits of public complaints about unpleasantly tasting and smelling water. Although odor is only regulated by a secondary maximum contaminant level, hence, a non-mandatory water quality standard, it is pivotal for utilities and environmental laboratories to accurately identify and quantify specific compounds potentially involved in Taste and Odor events. Therefore, highly sensitive, robust, accurate, and high throughput techniques are required for the analysis of 2-MIB and Geosmin at concentrations down to their odor threshold levels (low ng/L). Solid Phase Microextraction with GCMS detection is a common technique for the analysis of these compounds; however, the use of SPME Arrow, which is more sensitive and robust than conventional SPME, has been limited. In this study, an analytical method was developed and validated for the analysis of 2-MIB and Geosmin employing SPME Arrow. Twenty-five water samples (combining tap and surface water from different sources) were analyzed during this work. In addition to quantifying 2-MIB and Geosmin, screening of additional off-flavor compounds was conducted against a SMART database. This workflow will help utilities and environmental labs in managing Taste and Odor events. Performance of the SPME Arrow-based method and monitoring results will be shared in this presentation.
New Organic Monitoring Techniques
Poster Presentation
Prepared by A. Sandy, R. Marfil-Vega, N. Lock
Shimadzu Scientific Instruments, 7102 Riverwood Drive, Columbia, MD, 21046, United States
Contact Information: alsandy@shimadzu.com; 410-910-1869
ABSTRACT
2-Methylisoborneol (2-MIB) and Geosmin are the two major culprits of public complaints about unpleasantly tasting and smelling water. Although odor is only regulated by a secondary maximum contaminant level, hence, a non-mandatory water quality standard, it is pivotal for utilities and environmental laboratories to accurately identify and quantify specific compounds potentially involved in Taste and Odor events. Therefore, highly sensitive, robust, accurate, and high throughput techniques are required for the analysis of 2-MIB and Geosmin at concentrations down to their odor threshold levels (low ng/L). Solid Phase Microextraction with GCMS detection is a common technique for the analysis of these compounds; however, the use of SPME Arrow, which is more sensitive and robust than conventional SPME, has been limited. In this study, an analytical method was developed and validated for the analysis of 2-MIB and Geosmin employing SPME Arrow. Twenty-five water samples (combining tap and surface water from different sources) were analyzed during this work. In addition to quantifying 2-MIB and Geosmin, screening of additional off-flavor compounds was conducted against a SMART database. This workflow will help utilities and environmental labs in managing Taste and Odor events. Performance of the SPME Arrow-based method and monitoring results will be shared in this presentation.
