Laserfiche WebLink
SOP TO-14A/15 <br /> ' Rev 4 <br /> December 2007 <br /> ' Analyzed a clean canister containing zero grade air or helium. Evaluate standard and blank <br /> according to QC parameters for CCV and blank. The blank must have all targets< R.L. The <br /> internal standard responses must be within 40% of the mean area response of the IS in <br /> the most recent calibration. The relative retention time (RRT) for each internal <br /> standard in the blank must be within 0.33 minutes compared to the RRT of the internal <br /> standard from the most recent calibration. <br /> ' 4. Analysis of a sample duplicate (if required) <br /> ' 5. Analysis of LCS and LCSD(if required) <br /> ' Analyze a 50 ml sample spiked with 100 ml of standard mix. This is performed in duplicate. <br /> Evaluate%recovery of each analyte. Recoveries must be 65— 135%. For LARWQCB/DTSC <br /> an LCS is a low level standard analyzed following a batch of samples, all of which are"non- <br /> detect" for all targets. The internal standard responses must be within 40%of the mean <br /> area response of the IS in the most recent calibration. The relative retention time(RRT) <br /> for each internal standard in the LCS & LCSD must be within 0.33 minutes compared <br /> ' to the RRT of the internal standard from the most recent calibration. <br /> ' 13.3 Soil Vapor/Air Sample Analysis <br /> 1. Prior to vapor samples, it is necessary to adjust the multiplication factor in the computer to the <br /> ' appropriate value. For example, if a 50 mL vapor sample is analyzed,the multiplication <br /> factor to be entered would be 1. This factor can be adjusted in the Sample log table menu. <br /> (e.g., a 20 mL sample would have a dilution (concentration) factor of 50/20=2.5) <br /> ' 2. After sample analysis , evaluate the internal standard responses,the surrogate <br /> recoveries and the target analyte concentrations.The internal standard responses must <br /> ' be within 40% of the mean area response of the IS in the most recent calibration. The <br /> relative retention time(RRT) for each internal standard in the LCS & LCSD must be <br /> within 0.33 minutes compared to the RRT of the internal standard from the most recent <br /> ' calibration. At least 2 surrogate, one aromatic ,the other chlorinated must pass. If not, <br /> the sample should be rerun either at a dilution or at the same concentration. The target <br /> analyte must not exceed the initial calibration range. For DTSCand SAM work, target <br /> ' analyte concentrations do not need to be rerun or"E" flagged unless the concentration <br /> is greater than 50% above the highest concentration of that analyte in the initial <br /> calibration. <br /> ' 13.4 Data Processing <br /> ' The GC/MS data system will perform peak integration of the target ion chromatograms. If parameters for <br /> threshhold and peak width are correctly set(see Agilent manuals), the algorithm used by the Hewlett- <br /> Page 13 of 24 <br /> 1 <br />