Proposed U.S. EPA FGDW Methodology

Before a suite of samples can be analyzed, a set of protocols, similar in design to other U.S. EPA ICP-MS analytical procedures such as Method 200.8, must be followed to ensure the instrument is working at its optimum performance. A summary of these protocols is shown in Table 20.2. The analytical run sequence outlined should be performed on a daily basis in order to meet all quality control requirements. (Note The samples shown in the top portion [sequence 1-19] must be run once per sequence, while the 10 samples [sequence 20-22] and the final continuing calibration verification [CCV] and continuing calibration blank [CCB] samples must be repeated.) 

Typical internal standards Isotopes monitored (refo to Table 20.2 for details) 

Perfluoroalkoxy (PFA) microflow Peltier-cooled baffled quartz cyclonic Ni 

Standard mode or collision/reaction cell technology when needed 3 

10 Samples, which must contain a laboratory control sample (LCS) plus one matrix spike (MS) and matrix spike duplicate (MSD) 

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