Methods List
Analytical Methods
Instrument |
Analysis |
Method(s) Used * |
Reporting Limit |
|
Lachat QuickChem 8500 |
Nitrate + nitrite (2M KCl extracts) |
QuikChem 12-107-04-1-J |
0.025 ppm N |
|
Nitrate + nitrite (water) |
QuikChem 10-107-04-1-J |
0.10 ppm N |
|
|
Ammonia (water, 2M KCl, 0.01M CaCl2, 0.5M K2SO4 extracts) |
QuikChem 90-107-06-3-A |
0.10 ppm N |
|
|
Phosphorous (Olsen’s extract) |
QuikChem 12-115-01-1-Q |
0.10 ppm P |
|
|
Orthophosphate (Bray or Melich extract) |
QuikChem 12-115-01-1-N |
0.40 ppm P |
|
|
Orthophosphate (water) |
QuikChem 10-115-01-1-A |
0.01 ppm P |
|
|
ThermoFisher Dionex IC-2100 (AS18 column) |
Br, Cl, F, NO3-N, NO2-N, o-PO4-P, SO4 |
EPA 300.1 |
0.020 ppm F, 0.020 ppm Cl, 0.04 ppm Br, 0.01 NO2-N, 0.01 ppm NO3-N, 0.04 ppm o-phosphate-P, 0.04 ppm SO4 |
|
Seal QuAAtro Segmented Flow Analyzer |
NO3-N |
QuAAtro Q-035-04 Rev. 4 |
30 ppb NO3-N |
|
NO2-N |
QuAAtro Q-030-04 Rev. 2 |
7 ppb NO2-N |
|
|
PO4 |
QuAAtro Q-031-04 Rev. 1 |
1 ppb PO4-P |
|
|
NH3 |
|
2 ppb NH3-N |
|
|
SpectroBLUE ICP-OES |
Elements |
USGS I-4471-97 |
|
|
Shimadzu TOC-CSH (with TN Module) |
Total carbon, inorganic carbon, non-purgeable organic carbon in water (high temperature catalytic combustion) |
ASTM D7573 |
0.1 ppm C |
|
Total nitrogen in water (high temperature catalytic combustion) |
ASTM D8083 |
0.1 ppm N |
|
|
CEM Microwave Digester |
Water |
Standard Methods 3030K EPA Method 3015a |
|
|
Soil |
EPA 3051a |
||
|
Biological tissue, vegetation |
EPA 3052 |
Soil Analytical Methods
Analysis |
Method/Reference* |
|
pH (1:2 water) |
EPA 9045D |
|
% Moisture (oven dry/ gravimetric) |
C.A. Black, editor, 1965. Methods of Soil Analysis. Part 1. Physical and Mineralogical Properties. Agron. Monogr. 9.1. ASA, SSSA, Madison, WI. |
|
Extract (Olsen’s, KCl, H2O) |
D.L. Sparks, A.L. Page, P.A. Helmke, R.H. Loeppert, editors, 1996. Methods of Soil Analysis Part 3—Chemical Methods. SSSA Book Ser. 5.3. SSSA, ASA, Madison, WI. |
|
Extract for ICP (DTPA-TEA, pH= 7 ammonium acetate) |
D.L. Sparks, A.L. Page, P.A. Helmke, R.H. Loeppert, editors, 1996. Methods of Soil Analysis Part 3—Chemical Methods. SSSA Book Ser. 5.3. SSSA, ASA, Madison, WI.
|
|
Sieving |
C.A. Black, editor, 1965. Methods of Soil Analysis. Part 1. Physical and Mineralogical Properties. Agron. Monogr. 9.1. ASA, SSSA, Madison, WI. |
|
Particle size |
C.A. Black, editor, 1965. Methods of Soil Analysis. Part 1. Physical and Mineralogical Properties. Agron. Monogr. 9.1. ASA, SSSA, Madison, WI. |
*Methods may be modified to fit needs of user/project, instrument capability, and standards available in the EAL. If method modification is an issue with your data requirements, please discuss with the EAL prior to submitting samples.