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AQ1 ENVIRONMENTAL METHODS LIST -USEPA
ANALYTE |
METHOD DESCRIPTION |
METHOD NUMBER |
METHOD DETECTION LIMIT |
EQUIVALENCE |
ALKALINITY |
Buffered methyl orange color reduction |
EPA-100-B Rev 0
|
EPA-102-B Rev 0
|
|
6.5 mg CaCO3/L (Range: 10 to 100 mg/L)
|
22 mg CaCO3/L (Range: 50 to 500 mg /L)
|
|
EPA 310.2 (1974) |
AMMONIA |
Alkaline phenate method with hypochlorite and sodium nitroprusside (indophenol blue) |
EPA-103-B Rev 1
|
EPA-129-B Rev 1
|
|
0.008 mg N/L (Range: 0.02 to 1.0 mg/L) |
0.05 mg N/L (Range: 0.25 to 10 mg/L) |
|
EPA 350.1, version 2 (1993)
Std. Methods 4500-NH3 G (19th,20th) |
AMMONIA
|
Alkaline salicylate method with hypochlorite and sodium nitroprusside
|
EPA-148-B Rev 0
EPA-150-B Rev 0
EPA-153-B Rev 0
|
0.006 mg N/L (Range: 0.02 to 1.0 mg/L)
0.016 mg N/L (Range: 0.1 to 5.0 mg/L)
0.016 mg N/L (Range: 0.1 to 10 mg/L) |
EPA 350.1, version 2 (1993)
Std. Methods 4500-NH3 G (19th,20th) |
CHLORIDE |
Mercuric thiocyanate reaction in the presence of ferric nitrate |
EPA-105-B Rev 0
|
EPA-124-B Rev 0
|
|
0.4 mg/L (Range: 2.5 to 100 mg Cl/L)
|
0.8 mg/L (Range: 5 to 200 mg Cl/L)
|
|
Std. Methods
4500-Cl- E (18th,19th,20th) |
CHROMIUM,
Hexavalent |
Hexavalent, chromium reaction with diphenylcarbazide |
EPA-108-B Rev 0
|
EPA-109-B Rev 0
|
|
0.0004 mg/L (Range: 0.01 to 0.5 mg/L)
|
0.011 mg/L (Range: 0.3 to 5.0 mg Cr (Vl)/L)
|
|
Std, Methods
4500-Cr B (20th) |
COLOR |
Platinum-cobalt standard comparison |
EPA-140-B Rev 0 |
2 Color Units (Range: 5 to 150 Color Units) |
Std. Methods
2120 B (18th,
19th, 20th) |
CYANIDE |
Chloramine-T with pyridine barbituric acid color reaction
(Manual distillation required) |
EPA-130-B Rev 0
|
0.0015 mg/L (Range:0.003 to 0.25 mg CN/L) |
EPA 335.4, Ver 1 (1993) Std. Methods
4500-CN E (18th, 19th,20th) |
AQ1 ENVIRONMENTAL METHODS LIST - USEPA
Method Detection Limits are calculated using USEPA procedure 40 CFR, Part 136, Appendix B
ANALYTE |
METHOD DESCRIPTION |
METHOD NUMBER |
METHOD DETECTION LIMIT |
EQUIVALENCE |
NITROGEN,
Total Kjeldahl (TKN) |
Kjeldahl digests (Hg catalyst) are reacted with alkaline salicylate in the presence of hypochlorite and sodium nitroprusside (Digestion required) |
EPA-125-B Rev 0 |
EPA-110-B Rev 0
|
|
0.03 mg N/L (Range: 0.1 to 4.0 mg N/L) |
0.2 mg N/L (Range: 0.5 to 24 mg N/L) |
|
EPA 351.2,
Ver 2 (1993) |
NITROGEN,
Total Kjeldahl (TKN) |
Kjeldahl digests (Cu catalyst) are reacted with alkaline salicylate in the presence of hypochlorite and sodium nitroprusside (Digestion required) |
EPA-111-B Rev 2
|
EPA-136-B Rev 2
|
|
0.07 mg N/L (Range: 0.2 to 4.0 mg N/L) |
0.12 mg N/L (Range: 0.5 to 25 mg N/L) |
|
EPA 351.2, Ver 2 (1993) |
NITRATE + NITRITE |
Cadmium coil reduction followed by sulfanilamide reaction in the presence of N-(1-naphthylethylenediamine) dihydrochloride |
EPA-127-B Rev 1 |
EPA-126-B Rev 3
|
EPA-114-B Rev 1
|
|
0.003 mg N/L (Range: 0.012 to 2.0 mg N/L) |
0.015 mg N/L (Range: 0.06 to 5.0 mg N/L) |
0.04 mg N/L (Range: 0.25 to 15 mg N/L) |
|
EPA 353.2 Ver 2 (1993) Std. Methods 4500-NO3F(18th,19th,20th)
|
NITRATE + NITRITE |
Cadmium coil reduction followed by sulfanilamide reaction in the presence of N-(1-naphthylethylenediamine) dihydrochloride (Imidazole buffer used) |
EPA-132-B Rev1
|
0.004 mg N/L (Range: 0.012 to 2.0 mg N/L)
|
N/A
|
NITRATE + NITRITE |
Vanadium(III) chloride reduction followed by sulfanilamide reaction in the presence of N-(1-naphthylethylenediamine) dihydrochloride
|
EPA-160-B Rev 0
|
0.004 mg N/L (Range: 0.025 to 1.0 mg N/L) |
40 CFR, Part 136.3
|
NITRITE |
Sulfanilamide reaction in the presence of N-(1-naphthylethylenediamine) dihydrochloride |
EPA-115-B Rev 1 |
EPA-137-B Rev 0 |
|
0.002 mg N/L (Range: 0.015 to 1.2 mg N/L) |
0.0001 mg N/L (Range: 0.0009 to 0.2 mg N/L) |
|
EPA 353.2 Ver 2 (1993) Std. Methods 4500-NO3 F (18th,19th,20th) |
PHENOLICS |
Sample distillates are reacted with alkaline ferricyanide and 4-aminoantipyrine (Manual distillation required) |
EPA-117-B Rev 0
|
0.004 mg phenol/L (Range: 0.01 to 0.4 mg phenol/L) |
EPA 420.4 ver 1 (1993) |
PHOSPHATE, Ortho |
Acidic molybdate/antimony with ascorbic acid reduction (phosphomolybdenum blue) |
EPA-155-B Rev 0
EPA-118-B Rev 1 |
EPA-145-B Rev 1
|
EPA-146-B Rev 0
|
|
0.0008 mg P/L (Range: 0.003 to 0.3 mg P/L)
0.002 mg P/L (Range: 0.01 to 1.0 mg P/L)
|
0.005 mg P/L (Range: 0.05 to 5.0 mg P/L) |
0.01 mg P/L (Range: 0.125 to 12.5 mg P/L) |
|
EPA 365.1 Ver 2 (1993) Std. Methods 4500-P F (18th,19th,20th) |
AQ1 ENVIRONMENTAL METHODS LIST- USEPA
Method Detection Limits are calculated using USEPA procedure 40 CFR, Part 136, Appendix B
AQ1 ENVIRONMENTAL METHODS LIST- USEPA
Method Detection Limits are calculated using USEPA procedure 40 CFR, Part 136, Appendix B
ANALYTE |
METHOD DESCRIPTION |
METHOD NUMBER |
METHOD DETECTION LIMIT |
EQUIVALENCE |
PHOSPHORUS,
Total(TP) |
Acidic molybdate/antimony withascorbic acid reduction (Manual persulfate digestion required) |
EPA-119-B Rev 0
|
EPA-134-B Rev 0
|
|
0.002 mg P/L (Range: 0.01 to 1.0 mg P/L)
|
0.006mg P/L (Range: 0.05 to 5.0 mg P/L)
|
|
EPA 365.1
Std. Methods 4500-P F
(18th,19th,20th) |
PHOSPHORUS,
Total (TKP) |
Kjeldahl digests (Hg catalyst) are reactedwith acidic molybdate/antimony with ascorbic acid reduction |
EPA-120-B Rev 0
|
0.007 mg P/L (Range: 0.04 to 3.2 mg P/L) |
EPA 365.4 |
PHOSPHORUS,
Total Kjeldahl
(TKP) |
Kjeldahl digests (Cu catalyst) are reacted with acidic molybdate/antimony with ascorbic acid reduction. Method range depends on digestion protocol |
EPA-135-B Rev 0
|
EPA-138-B Rev 0
|
|
0.009 mg P/L (Range: 0.04 to 3.2 mg P/L)
|
TBD mg P/L (Range: 0.05 to 3.0 mg P/L)
|
|
N/A |
SULFATE |
Barium chloride turbidimetric method with use of gelatine as suspension agent |
EPA-165-B Rev 0 |
0.18 mg/L (Range 5 to 40 mg/L) |
ASTM D516-11 |
SILICA
(Reactive silica) |
Acidic molybdate, no reduction
(molybdo-silicic acid) |
EPA-121-B Rev 1
|
0.07 mg/L (Range: 0.25 to 25 mg/L)
|
Std. Methods 4500-SiO2 C
(20th) |
SILICA
(Reactive silica) |
Acidic molybdate, ANSA reduction
(silico-molybdenum blue) |
EPA-122-A Rev 0 |
0.018 mg/L (Range: 0.1 to 10 mg/L) |
Std. Methods 4500-SiO2 D
(20th) |
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