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The Arikaree Environmental Laboratory

The Arikaree Environmental Laboratory (AEL) is the environmental chemistry laboratory for the Niwot Ridge/Green Lakes Valley Long-Term Ecological Research Program. The lab analyzes snow, water, and soil samples from alpine and subalpine ecosystems for major solutes, nutrients, and isotopes. 

AEL is located in CU INSTAAR's SEEL building, room 150, and is managed by Holly Hughes.

The Arikaree Environmental Laboratory

AEL lab

Niwot Personnel

Hinckley, Eve-Lyn

Eve-Lyn Hinckley

Investigator, Director, Arikaree Environmental Laboratory

Hughes, Holly

Holly Hughes

Staff, Manager, Arikaree Environmental Laboratory

Analytical Tests

A) Water Samples

B) Soil Samples

Equipment

Test/Solute Detection Limits and Precision

Test/Solute Equipment Detection Limit Within Run Precision EPA Method

Calcium (Ca2+)

Perkin Elmer AAnalyst 200 0.49 uEQ/L 0.24% RSD 215.1

Sodium (Na+)

Perkin Elmer AAnalyst 200 0.10 uEQ/L 0.43 % RSD 273.1

Potassium (K+)

Perkin Elmer AAnalyst 200 0.09 uEQ/L 0.59 % RSD 258.1

Magnesium (Mg2+)

Perkin Elmer AAnalyst 200 0.11 uEQ/L 0.31 % RSD 242.1

Manganese (Mn)

Perkin Elmer AAnalyst 200 0.18 uEQ/L NA 243.1

Lithium (Li)

Perkin Elmer AAnalyst 200 0.74 uEQ/L NA NA

Ammonium (NH4+)

BioTek Synergy 2 0.16 uEQ/L 1.07 % RSD 350.1**

Silica

Lachat QC 8500 FIA 0.02 uEQ/L 0.87 % RSD 370.1

Chloride (Cl-)

Metrohm 930 Compact IC 0.17 uEQ/L* 0.62 % RSD 300.1

Nitrate (NO3-)

Metrohm 930 Compact IC 0.02 uEQ/L* 0.27 % RSD 300.1

Sulfate (SO42-)

Metrohm 930 Compact IC 0.06 uEQ/L* 0.17 % RSD 300.1

Bromide (Br-)

Metrohm 930 Compact IC 0.12 uEQ/L* NA 300.1

Fluoride (F-)

Metrohm 930 Compact IC 0.16 uEQ/L* NA 300.1

Nitrite (NO2-)

Lachat QC 8500 FIA 0.09 uEQ/L* 1.49 % RSD 353.2

Nitrate+Nitrite (NO3-+NO2-)

Lachat QC 8500 FIA 0.07 uEQ/L 0.33 % RSD 353.2

Non-Purgable Organic Carbon (NPOC)

Shimzadzu TOC-L CSN 0.04 mgC/L 1.42 % RSD 415.1

Total Dissolved Nitrogen

Shimzadzu TOC-L CSN 0.56 uEQ/L 2.82 % RSD NA

ortho-Phosphate (PO43-)

Lachat QC 8500 FIA 0.012 uEQ/L 1.94 % RSD 365.3

Total Dissolved Phosphorus

Lachat QC 8500 FIA 0.026 uEQ/L 1.16 % RSD 365.3

delta18O

Picarro L2130-i NA 0.13 %RSD NA

delta Deuterium

Picarro L2130-i NA 0.10 %RSD NA

Total Suspended Solids

NA 0.209 mg NA 160.2

Annual Statistics

Year Number of Samples Submitted Number of Tests Analyzed
2014 6,404 42,125
2012 7,701 38,592
2011 5,919 48,062
2010 9,587 42,536
2009 4,420 31,698
2008 5,693 25,054
2007 5,352 24,480
2006 4,106 26,696
2005 3,193 23,809
2004 5,687 25,153
2003 5,568 22,659
2002 4,890 17,906
2001 6,069 19,533
2000 4,409 19,008
1999 4,713 24,822

Updated 1/30/2017 by Holly Miller
Within Run Precision updated as of 2014
Detection Limits are calculated with a USEPA MDL method
*Detection Limits from 2015, all else from 2016
**Method modified

KIOWA ENVIRONMENTAL CHEMISTRY LABORATORY Procedure Manual

Instaar
Instaar
NSF
CU Boulder

This material is based upon work supported by the National Science Foundation under Cooperative Agreement #DEB-1637686. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necesarily reflect the views of the National Science Foundation.

Please contact lternwt@colorado.edu with questions, comments, or for technical assistance regarding this website.

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