Mixed Analyte Performance Evaluation Program
Statistical Summary
Sample Id: MAPEP-97-W5
Analyte |
T (1) |
A (2) |
Grand |
Standard |
Reference |
Acceptance |
Units |
| Antimony | 40 |
40 |
1.95 |
0.13 |
1.97 |
1.38 – 2.56 |
(mg/L) |
| Arsenic | 45 |
40 |
0.49 |
0.04 |
0.49 |
0.34 – 0.64 |
(mg/L) |
| Barium | 33 |
33 |
(3) |
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| Beryllium | 42 |
42 |
1.95 |
0.11 |
1.97 |
1.38 – 2.56 |
(mg/L) |
| Cadmium | 43 |
43 |
0.58 |
0.04 |
0.59 |
0.41 – 0.77 |
(mg/L) |
| Chromium | 45 |
44 |
2.82 |
0.13 |
2.95 |
2.07 – 3.84 |
(mg/L) |
| Lead | 22 |
22 |
(3) |
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| Nickel | 45 |
45 |
4.83 |
0.26 |
4.92 |
3.44 – 6.40 |
(mg/L) |
| Selenium | 42 |
37 |
0.39 |
0.02 |
0.39 |
0.27 – 0.51 |
(mg/L) |
| Silver | 33 |
33 |
(3) |
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| Thallium | 38 |
36 |
2.89 |
0.17 |
2.95 |
2.07 – 3.84 |
(mg/L) |
| Vanadium | 40 |
40 |
2.94 |
0.10 |
2.95 |
2.07 – 3.84 |
(mg/L) |
| Zinc | 34 |
34 |
(3) |
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| Americium-241 | 44 |
39 |
1.98 |
0.16 |
2.13 |
1.49 – 2.77 |
(Bq/L) |
| Cesium-137 | 56 |
55 |
214.27 |
15.27 |
213.12 |
149.18 – 277.06 |
(Bq/L) |
| Cobalt-57 | 54 |
50 |
270.05 |
18.07 |
277.50 |
194.25 – 360.75 |
(Bq/L) |
| Cobalt-60 | 55 |
53 |
131.02 |
8.30 |
132.46 |
92.72 – 172.20 |
(Bq/L) |
| Iron-55 | 12 |
10 |
508.62 |
72.97 |
492.10 |
344.47 – 639.73 |
(Bq/L) |
| Manganese-54 | 53 |
52 |
221.20 |
16.92 |
221.63 |
155.14 – 288.12 |
(Bq/L) |
| Nickel-63 | 12 |
10 |
330.82 |
52.83 |
358.90 |
251.23 – 466.57 |
(Bq/L) |
| Plutonium-238 | 44 |
38 |
1.34 |
0.12 |
1.40 |
0.98 – 1.82 |
(Bq/L) |
| Plutonium-239/240 | 45 |
35 |
3.30 |
0.23 |
3.44 |
2.41 – 4.47 |
(Bq/L) |
| Strontium-90 | 39 |
37 |
30.63 |
3.82 |
32.12 |
22.48 – 41.76 |
(Bq/L) |
| Uranium-234/233 | 42 |
38 |
3.56 |
0.29 |
3.60 |
2.52 – 4.68 |
(Bq/L) |
| Uranium-238 | 43 |
40 |
(4) |
(Bq/L) | |||
| Zinc-65 | 53 |
52 |
599.33 |
55.91 |
588.30 |
411.80 – 764.79 |
(Bq/L) |
| Phenol | 30 |
29 |
18.02 |
9.22 |
17.70 |
10.00 – 60.90 |
(ug/L) |
| 1,3-Dichlorobenzene | 29 |
28 |
37.97 |
6.47 |
37.40 |
10.00 – 64.60 |
(ug/L) |
| 2,4-Dimethylphenol | 32 |
30 |
48.59 |
13.98 |
50.70 |
10.00 – 95.50 |
(ug/L) |
| Naphthalene | 34 |
32 |
33.29 |
7.63 |
33.20 |
10.00 – 60.40 |
(ug/L) |
| 4-Chloro-3-methylphenol | 31 |
30 |
81.11 |
16.51 |
81.20 |
20.00 – 155.20 |
(ug/L) |
| 2,6-Dichlorophenol | 12 |
12 |
49.29 |
20.81 |
49.10 |
10.00 – 137.50 |
(ug/L) |
| Acenaphthylene | 32 |
31 |
21.58 |
4.63 |
21.50 |
10.00 – 41.50 |
(ug/L) |
| Acenaphthene | 16 |
15 |
2.08 |
0.85 |
(5) |
(ug/L) | |
| 2,4-Dinitrotoluene | 29 |
28 |
55.04 |
10.83 |
55.70 |
50.00 – 100.90 |
(ug/L) |
| 4-Nitrophenol | 26 |
26 |
86.31 |
41.96 |
84.40 |
50.00 – 278.80 |
(ug/L) |
| Diethylphthalate | 30 |
29 |
32.71 |
10.02 |
33.80 |
10.00 – 74.20 |
(ug/L) |
| Pentachlorophenol | 31 |
30 |
152.22 |
43.01 |
154.40 |
50.00 – 328.80 |
(ug/L) |
| Pyrene | 34 |
31 |
49.72 |
10.82 |
49.90 |
10.00 – 100.70 |
(ug/L) |
Outliers are excluded from the Statistical Summary
Outliers are defined as laboratory data with bias greater than 30%.
(1) T = Total Number of Laboratories Reporting the Analyte
(2) A = Number of Laboratories with ‘Acceptable’ Performance
1. For organic components in this study, absolute value of Z-Score < 3.0
2. Acceptance range minimum for organics is based on the Estimated Quantitaiton
Limit per US EPA SW-846
Method 8270C, December 1996 or 3*Std. Dev. which ever is
larger.
3. Excludes laboratory inorganic data catagorized as Total.
(3) These inorganic target analytes were not added to the sample and thus there is no
reference value.
(4) Uranium-238 was depleted in this sample (i.e. none was added).
(5) Acenaphthene was determined to be present by 16 of the reporting laboratories,
however, it was not added
to the sample thus has no reference value.
4/29/98