Water Quality Specialist

Data Validation of Flame AA Analysis

The analyst follows the proper documented methodology found in the Standard Operating Procedures to analyze a batch of samples. The analysis is documented in a bound notebook.  For each run, a record of the following information is kept: date, time, analyst initials, analysis name, method number, PMT voltage, lamp current, standard calibration curve, QC sample, sample identification numbers, dilution factors, results received, comments/concerns of the analyst, and the FAA run number.

At the completion of each analytical run, a copy of the run is printed. The printout is reviewed with the notebook and the identifications and dilution factors are transcribed onto the printout. Then, the analyst enters the data from the printout into the database.

The analyst checks the data and the calculations from the notebook with the data and calculations from the database to verify the consistency between the two.

A printout of the run is generated from the database and includes the following information: **** A screen cap would be good here.**** sample identification number, result, percent relative error for the duplicates, percent spike recovery, date, and analyst initials.

The analyst reviews the computer-generated control chart for duplicates and the mean control chart for spike recoveries for the last 20 samples entered into the database for that particular analysis.

The analyst checks to ensure that the samples were in control and that the run was stable.

The analyst the reviews the computer-generated printout of the run and signs and dates it. The printout is attached to the printout from the FAA, and together with the notebook is given to another analyst for review. When completed, the other analyst signs and dates the computer-generated printout and returns it back to the original analyst.

The results remain in the database for the final report assembly. The final report is reviewed, signed, and dated by the laboratory director.