Typical Analysis Orders For US EPA Methods

# Analytical sample count ILM04.0/05.0 ILM04.0/05.0 Method 200.7 6010B
2 0 Samples 20 Samples 20 Samples
1 0 Calibration blank Calibration blank Calibration blank
4 0 Standards Standards* Standards
5 0 ICV Initial performance check (IPC) ICV
6 0 ICB Calibration blank Calibration blank
7 1 CRI Lab reagent blank method Blank
8 2 ICSA Lab fortified Blank CCV
9 3 ICSAB S1(Lab duplicate 1) Calibration blank
10 0 CCV S1(Lab duplicate 2) Sample 1
11 0 CCB S1(Lab fortified matrix) S1 D1 (Matrix spike duplicate 1)
12 1 Prep Blank S1 (Dilution test) S1 D2 (Matrix spike duplicate 2)
13 2 LCS S1 (Analyte addition test) S1 Post digestion spike
14 3 Sample 1 Sample 2 S1 Dilution test
15 4 S1 DUPLICATE Sample 3 Sample 2
16 5 S1 SPIKE Sample 4 Sample 3
17 6 S1 DILUTION IPC Sample 4
18 7 Sample 2 Cal Blk Sample 5
19 8 Sample 3 Sample 5 Sample 6
20 9 Sample 4 Sample 6 CCV
21 10 Sample 5 Sample 7 CCB
22 0 CCV Sample 8 Sample 7
23 0 CCB Sample 9 Sample 8
24 1 Sample 6 Sample 10 Sample 9
25 2 Sample 7 Sample 11 Sample 10
26 3 Sample 8 Sample 12 Sample 11
27 4 Sample 9 Sample 13 Sample 12
28 5 Sample 10 Sample 14 Sample 13
29 6 Sample 11 IPC Sample 14
30 7 Sample 12 Cal Blk Sample 15
31 8 Sample 13 Sample 15 Sample 16
32 9 Sample 14 S 15 (LFM) CCV
33 10 Sample 15 Sample 16 CCB
34 0 CCV Sample 17 Sample 17
35 0 CCB S Sample 18 Sample 18
36 1 Sample 16 Sample 19 Sample 19
37 2 Sample 17 Sample 20 Sample 20
38 3 Sample 18 IPC CCV
39 4 Sample 19 Cal Blk CCB
40 5 Sample 20    
41 6 CRI    
42 7 ICSA    
43 8 ICSAB    
44 0 CCV    
45 0 CCB    
  Efficiency 44.4% 51.3% 51.3%

* It is assumed that the Initial Demostration of Performance, including annual demonstration of LDR and MDLs has been done prior to analysis
* It is assumed that the 17 Spectral Interference Check (SIC) standards have been analysed prior to the instrument calibration. Only those correction factors exceeding certain criteria need be tested daily
* Note that a QCS (Quality Control Sample) is required by 200.7 on a quarterly basis - but since this is not a daily operation it is not indicated in the analysis list above

 

Methods 200.8 and 6020 specifies a variety of quality control standards listed below

Check Code Check Name Purpose Frequency Limits
--- Tune: (Mass calibration and resolution verification) Ensures correct mass is measured at its maximum and that peaks are properly resolved  Prior to analysis Masses measured must not deviate by more than 0.1 amu from their nominal position and peak width should be approximately 0.75 amu at 5 % peak height
--- Tune: (Stability and precision verification) Ensures the instrument is properly optimized and thermally stable Prior to analysis RSD < 5 % over 5 measurements
QCS Quality Control Sample Checks the accuracy of the calibration with a second source standard Post calibration 90-110% recovery
LRB Laboratory Reagent Blank Checks the laboratory reagents and sample preparation process for contamination 1 per batch of 20 or fewer samples No specific requirements
LFB Laboratory Fortified Blank Checks the recovery of analytes by spiking a known quantity into a blank 1 per batch of samples 85-115 % recovery or within ± 3 standard deviations of the mean recovery
LFM Laboratory Fortified Matrix Checks recovery of analytes in a matrix by spiking a known quantity into a sample 1 in 10 samples 70-130 % recovery
CCV Continuing Calibration Verification A continuing check of accuracy and drift normally done by re-measuring a calibration standard as a sample Every 10 analyses and at the end of the run 90-110 % recovery
CCB Continuing Calibration Blank A continuing check of the blank level by re-measuring the calibration blank as a sample Every 10 analyses and at the end of the run No specific requirements

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