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.

 

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