The methodology described within United States EPA Method 8270 for the analysis of semivolatile organic compounds by GC/MS is applicable to other regions worldwide. The method presents several analytical challenges due to the requirement for simultaneous measurement of diverse classes of compounds over a wide concentration range. The 5977A and B Inert Plus GC/MSD meet the performance requirements of Method 8270D/E over a working range of 0.2–160 ppm using a single injection (one calibration). Initial calibration results are indicative of how long the continuing calibration will last and, thus, the length of time samples may be analyzed without intervention by the operator, which lowers the cost of operation. A wider calibration range and low compound %RSDs were achieved with this method.

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