USGS Inorganic Blind Sample Project (IBSP)
NWQL Control Charts for Fiscal Year 2008 Analytes
Charts are complete, but IBSP reserves the right to make revisions if necessary
Notes
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The f-pseudosigma (used to set control limits) is calculated three ways for each data point:
1. using a regression equation
2. multiplying the target value by 5%
3. multiplying the LTMDL by 0.75
The largest calculated value is then assigned as the f-pseudosigma for that point.
| NWQL Charts |
| Nutrients |
Parameter |
Lab Code |
| Nitrate
plus Nitrite as N, Fil |
00631 |
CLO48 |
1975 |
| Nitrate
plus Nitrite as N, Fil, Low-level |
00631 |
CLO50 |
1979 |
| Nitrogen
(NH3 as N), Fil, Discrete Analyzer |
00608 |
OOO48 |
3116 |
| Nitrogen
(NH3 as N), UnFil, Acidified |
00610 |
CLO17 |
2188 |
| Nitrogen
(NH3+org N as N), Fil, Kjeldahl |
00623 |
KJO02 |
1985 |
Nitrogen
(NH3+org N as N), Fil, Acidified, Kjeldahl
(See labcode 1985) |
00623 |
KJO03 |
1994 |
| Nitrogen
(NH3+org N as N), UnFil, Acidified, Kjeldahl |
00625 |
KJO05 |
1986 |
| Nitrogen
(NH3+NO3+NO2+org N as N), Fil, Alk. persulfate |
62854 |
CLO63 |
2754 |
| Nitrogen
(NH3+NO3+NO2+org N as N), UnFil, Acidified, Alk. persulfate |
62855 |
AKP01 |
2756 |
| Orthophosphate
as P, Fil, Discrete Analyzer |
00671 |
OOO48 |
3118 |
| Phosphorus
(total) as P, Fil, Acidified, Acid persulfate, Low-level |
00666 |
CLO19 |
2332 |
| Phosphorus
(total) as P, Fil, Alk. persulfate |
00666 |
CLO63 |
2757 |
| Phosphorus
(total) as P, Fil, Kjeldahl |
00666 |
KJO05 |
1983 |
| Phosphorus
(total) as P, Fil, Acid persulfate, Low-level |
00666 |
CLO20 |
2331 |
| Phosphorus
(total) as P, UnFil, Acidified, Kjeldahl |
00665 |
KJO09 |
1984 |
| Phosphorus
(total) as P, UnFil, Acidified, Acid persulfate, Low-level |
00665 |
CLO21 |
2333 |
| Phosphorus
(total) as P, Fil, Acidified, Alk. persulfate |
00666 |
CLO62 |
2758 |
| Phosphorus
(total) as P, UnFil, Acidified, Alk. persulfate |
00665 |
AKP01 |
2759 |
|
|
|
|
| Inorganics
/ Physical properties |
| Alkalinity (Fil) |
29801 |
TTO40 |
2109 |
| Alkalinity (UnFil, acid-neutralizing) |
90410 |
TTO40 |
0070 |
| Aluminum (Fil, ICP-MS) |
01106 |
PLM43 |
1784 |
| Aluminum (UnFil, ICP-MS) |
01105 |
PLM48 |
2372 |
| Antimony (Fil, ICP-MS) |
01095 |
PLM43 |
1785 |
| Antimony (UnFil, ICP_MS) |
01097 |
PLM48 |
2373 |
| Arsenic (Fil, ICP-MS [collision cell]) |
01000 |
PLM10 |
3122 |
| Arsenic (UnFil, ICP-MS [collision cell]) |
01002 |
PLM10 |
3123 |
Arsenic Speciation -Arsenite [As(III)] in org.
Matrix (Fil, ICP-MS)
(This method no longer monitored starting FY08) |
62452 |
PLM35 |
2734 |
Arsenic Speciation -- Arsenate [As(V)] in org. Matrix (Fil, ICP-MS)
(This method no longer monitored starting FY08) |
62453 |
PLM35 |
2735 |
Arsenic Speciation -- Arsenite [As(III)] (Fil, ICP-MS)
(This method no longer monitored starting FY08) |
62452 |
PLM36 |
2744 |
Arsenic Speciation -- Arsenate [As(V)] (Fil, ICP-MS)
(This method no longer monitored starting FY08) |
62453 |
PLM36 |
2745 |
Arsenic Speciation -- Dimethylarsinate (Fil, ICP-MS)
(This method no longer monitored starting FY08) |
62455 |
PLM36 |
2737 |
Arsenic Speciation -- Monomethylarsonate (Fil, ICP-MS)
(This method no longer monitored starting FY08) |
62454 |
PLM36 |
2736 |
| Barium (Fil, ICP) |
01005 |
PLA11 |
0641 |
| Barium (Fil, ICP-MS) |
01005 |
PLM43 |
1786 |
| Barium (UnFil, ICP-MS) |
01007 |
PLM47 |
2374 |
| Beryllium (Fil, ICP-MS) |
01010 |
PLM43 |
1787 |
| Beryllium (UnFil, ICP-MS) |
01012 |
PLM47 |
2375 |
| Boron (Fil, ICP) |
01020 |
PLA13 |
2110 |
| Boron (Fil, ICP-MS) |
01020 |
PLM40 |
2504 |
| Boron (UnFil, ICP-MS) |
01022 |
PLM47 |
2501 |
| Cadmium (Fil, ICP-MS) |
01025 |
PLM43 |
1788 |
| Cadmium (UnFil, ICP-MS) |
01027 |
PLM47 |
2376 |
| Calcium (Fil, ICP) |
00915 |
PLA11 |
0659 |
| Calcium (UnFil, ICP) |
00916 |
PLA15 |
2356 |
| Chloride (Fil, IC, Low-level) |
00940 |
ICO24 |
1259 |
| Chloride (Fil, IC) |
00940 |
ICO22 |
1571 |
| Chromium (Fil, ICP) |
01030 |
PLA11 |
0722 |
| Chromium (UnFil, ICP) |
01034 |
PLA15 |
2357 |
| Chromium (Fil, ICP-MS [collision cell]) |
01030 |
PLM10 |
3126 |
| Chromium (UnFil, ICP-MS [collision cell]) |
01034 |
PLM10 |
3127 |
Cobalt (UnFil, ICP-MS)
(This method discontinued by NWQL 05/2007) |
01037 |
H |
2378 |
| Cobalt (Fil, ICP-MS, [collision cell]) |
01035 |
PLM10 |
3124 |
| Cobalt (UnFil, ICP-MS, [collision cell]) |
01037 |
PLM10 |
3125 |
Copper (UnFil, ICP-MS)
(This method discontinued by NWQL 05/2007) |
01042 |
H |
2379 |
| Copper (Fil, ICP-MS, [collision cell]) |
01040 |
PLM10 |
3128 |
| Copper (UnFil, ICP-MS, [collision cell]) |
01042 |
PLM10 |
3129 |
| Fluoride (Fil, ISE) |
00950 |
ISE05 |
0031 |
| Iron (Fil, ICP) |
01046 |
PLA11 |
0645 |
| Iron (UnFil, ICP) |
01045 |
PLA15 |
2359 |
| Lead (Fil, ICP-MS) |
01049 |
PLM43 |
1792 |
| Lead (UnFil, ICP-MS) |
01051 |
PLM48 |
2380 |
| Lithium (Fil, ICP) |
01130 |
PLA11 |
0664 |
| Lithium (Fil, ICP-MS) |
01130 |
PLM40 |
2505 |
| Magnesium (Fil, ICP) |
00925 |
PLA11 |
0663 |
| Magnesium (UnFil, ICP) |
00927 |
PLA15 |
2362 |
| Manganese (Fil, ICP) |
01056 |
PLA11 |
0648 |
| Manganese (Fil, ICP-MS) |
01056 |
PLM43 |
1793 |
| Manganese (UnFil, ICP) |
01055 |
PLA15 |
2363 |
| Manganese (UnFil, ICP-MS) |
01055 |
PLM48 |
2382 |
| Mercury (Fil, AF) |
71890 |
CVO14 |
2707 |
| Mercury (UnFil, AF) |
71900 |
CVO18 |
2708 |
| Molybdenum (Fil, ICP-MS) |
01060 |
PLM43 |
1794 |
| Molybdenum (UnFil, ICP-MS) |
01062 |
PLM48 |
2383 |
| Nickel (Fil, ICP-MS, [collision cell]) |
01065 |
PLM10 |
3130 |
| Nickel (UnFil, ICP-MS [collision cell]) |
01067 |
PLM10 |
3131 |
| Potassium (Fil, ICP) |
00935 |
PLO03 |
2773 |
| Potassium (Fil, ICP, Low-level) |
00935 |
PLO03 |
2774 |
| ROE @180 deg C (Fil, Grav) |
70300 |
ROE10 |
0027 |
| ROE @105 deg C (UnFil, Grav) |
00500 |
ROE12 |
0165 |
| Selenium, (FIL, ICP-MS [collision cell]) |
01145 |
PLM10 |
3132 |
| Selenium, (UnFil, ICP-MS [collision cell]) |
01147 |
PLM10 |
3133 |
| Silica (Fil, COL) |
00955 |
CLO64 |
0056 |
| Silica (Fil, ICP) |
00955 |
PLA11 |
0667 |
| Silver (Fil, ICP-MS) |
01075 |
PLM43 |
1796 |
| Silver (UnFil, ICP-MS) |
01077 |
PLM48 |
2386 |
| Sodium (Fil, ICP) |
00930 |
PLA11 |
0675 |
| Sodium (UnFil, ICP) |
00929 |
PLA15 |
2368 |
| Specific
Conductance (UnFil) |
90095 |
WHT03 |
0069 |
| Strontium (Fil, ICP) |
01080 |
PLA11 |
0652 |
| Strontium (Fil, ICP-MS) |
01080 |
PLM40 |
2507 |
| Sulfate (Fil, IC, Low-level) |
00945 |
ICO24 |
1263 |
| Sulfate (Fil, IC) |
00945 |
ICO22 |
1572 |
| Thallium (Fil, ICP-MS) |
01057 |
PLM40 |
2508 |
| Thallium (UnFil, ICP-MS) |
01059 |
PLM48 |
2388 |
| Uranium (Fil, ICP-MS) |
22703 |
PLM43 |
1797 |
| Uranium (UnFil, ICP-MS) |
28011 |
PLM48 |
2389 |
| Vanadium (Fil, ICP-MS, [collision cell]) |
01085 |
PLM10 |
3134 |
| Zinc (Fil, ICP-MS, [collision cell]) |
01090 |
PLM10 |
3138 |
| Zinc (UnFil, ICP-MS, [collision cell]) |
01092 |
PLM10 |
3139 |
|
U.S. Department of the Interior |
U.S. Geological Survey
