Chang I. L., Klee M. S. Purge and Trap GC-MS Determination of Trace Volatile Compounds in Drinking Water Using the HP 5973 Series MSD and Volatiles interface

CHANG I. L., KLEE M. S.

PURGE AND TRAP GC-MS DETERMINATION OF TRACE VOLATILE COMPOUNDS IN DRINKING WATER USING THE HP 5973 SERIES MSD AND VOLATILES INTERFACE- article

Eighty-four volatile pollutants in drinking water were analysed using the HP 6890/5973 GC-S system with P&T and VI. Test parameters were optimised to maximise sensitivity, linearity, and reproducibility. The system was more sensitive, more inert to active compounds, and handled higher column /low (for smaller split ratio and larger volume of sample) than previous systems. The line­arity of all 84 analytes was excellent with correlation coefficients of 0.994 to 0.999. The reproduci­bility of results is comparable to those specified by EPA method 524.2. The RSDs are below 10 per­cent for most analytes and under 20 percent for active and difficult-to-purge compounds. The method detection limits for most analytes are under 0.05 ppb, which are below the values reported in EPA method 524.2 and the referenced literature.