Increasing Throughput and Sustainability in EPA Method 8270 for Water Analyses Using Automated LLE-GC-MS/MSInnovative Solutions for Reducing Methylene Chloride
Oral Presentation
Prepared by A. Fornadel1, E. Guerriero2, M. Feo2, P. Benedetti3, M. Zanaboni3, M. Bergna3, D. Cavagnino3
1 - Thermo Fisher Scientific, 104 Quinn Road, Severna Park, Maryland, 21146, United States
2 - Istituto sull'Inquinamento Atmosferico, CNR Consiglio Nazionale delle Ricerche, , Montelibretti, , Italy
3 - Thermo Fisher Scientific, , Milan, , Italy
Contact Information: [email protected]; 443-346-0728
ABSTRACT
Analyzing SVOCs in water is a critical environmental analysis typically performed using EPA method 8270. Traditionally, this method requires laborious liquid-liquid extraction (LLE) with significant use of chlorinated solvents such as dichloromethane. Following EPA Method 3511, we designed an automated, micro-LLE extraction procedure for sample preparation using a TriPlus RSH Smart Autosampler for sample preparation followed by SVOC analysis using a TSQ 9610 GC-MS/MS.
Using this optimized workflow, analytical results were compliant with EPA 8270 while eliminating the use of dichloromethane in favor of a lower volume of ethyl acetate. This significantly reduced overall solvent usage and eliminates the need for dichloromethane. Furthermore, sample preparation was fully automated, allowing for greater sample throughput. This workflow provides a fully-automated, validated, reliable, and cost-effective method for analyzing SVOCs by EPA method 8270.
