离子阱GC-MS分析水中VOC

　　Overview

　　A Productivity Solution, encompassing the DSQTM II mass spectrometer , a FOCUSTM GC , EnviroLabTM Forms 2.0 software , an OI Eclipse 4660 Purge-and-Trap , and the OI 4551A Purge-and-Trap Autosampler , was developed for the analysis of drinking water according to the criteria listed in United States Environmental Protection Agency ( US EPA ) Method 524.2.1During development of this comprehensive solution , experiments were set up to evaluate the ability of the instrument to handle the large amount of water associated with this method. Precision and accuracy of the internal standards and surrogates addition were measured . Instrument parameters were set up to ensure minimal day-to-day maintenance , and consumables were selected based on their performance for the method . A purge-and-trap adapter kit was installed on the FOCUS GC inlet to provide an interface for sample introduction . By integrating the hardware , software , methods , and documentation into a turn-key package , the 524.2 Productivity Solution rapidly transforms the DSQTM II GC/MS into a dedicated EPA Method 524.2 analyzer.

　　Instruments

　　DSQTM II GC/MS

　　Conclusion

　　The 524 Productivity solution provides fast chromatography, with a short run time of 15 minutes, including a 5 minute bake out of the column following elution of the last compound. Short run times enable a high-throughput lab to easily process 36 samples or more per 12 hour shift , which ie nearly three times the sample throughput compared to conventional methodologies . The DSQ II system successfully and reliably met the QC criteria for EPA Method 524.2 using the FOCUS GC and split injections. Combined with a fast scanning rate and excellent sensitivity, the DSQ II GC/MS allows users to easily achieve the MDLs required by the EPA method . The 524 Productivity Solution features EnviroLab Forms 2.0 software , a package that matches the workflow in environmental laboratories is simple to use , and allows novice users to be instantly productlve . Electronic methods and a Standard Operating Procedure , along with a How TO Manual with Quick Start Guide , can be downloaded to the local PC by Installing the Interactive Reference CD , and a Validation Data CD may be used as a reference of typical data for the method . UltImately the 524 Productivity Solution transforms the DSQ II system into a dedicated analyzer for volatiles In drinking water .

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离子阱GC-MS分析水中VOC