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Internal Quality Assurance Requirements for the Analysis of Dioxins in Environmental Samples

Section 8: Data Evaluation

The following is a summary of the key performance achievements that would support confidence in the reliability of test sample results.

  1. The laboratory has demonstrated acceptable accuracy in analyzing method performance samples (Section 3d), certified standard solutions (Section 5g), and other certified reference materials as they become available.

  2. Duplicate or control sample results are provided, and demonstrate reasonable precision (Section 4k).

  3. All surrogate recoveries are within the acceptable range (Table 2).

  4. Reported method detection limits do not greatly exceed target values (Table 1).

  5. Method blanks have acceptable recoveries, contain non-detected or insignificant levels of analytes, and are free of interferences (Section 4j).

  6. Reported sample and calibration standard results are fully documented (Section 7).
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