Defense Waste Processing Facility prototypic analytical laboratory Page: 5 of 14
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values of <1 ppm. This module has 1 fume hood for sample dilutions, etc. with
the organic matrices.
The chromatography I! module is predominantly ion chromatography
(IC). This module has a Dionex 4500i fully automated, dual channel IC and a
manually operated Dionex 21001. The determinations made include the
following 8 anions, Fluoride, Chloride, Formate, Nitrite, Nitrate, Sulfate, Oxalate,
and Phosphate, and the Ammonium cation. Statistical process control charting
indicates that these measurements are all made within 5% error, except for
Phosphate which is within 10%. Also, located here is a diode array
spectrophotometer, HP8451A, which is used for making colorimetric
determinations of hydroxylamine nitrate and iron (ll)/iron (III) ratios. This module
has 1 fume hood for sample dilution and making reagants.
The spectroscopy module houses a sequential Applied Research
Laboratories, Inc. (ARL) inductively coupled plasma-atomic emission
spectrometer (ICP-AES) Model 3520B and 2 atomic absorption (AA)
spectrophotometers, a Variari AA-1Q and a Varian AA-400 with 1 graphite
accessory. The AA-10 is dedicated for low level mercury (Hg) determinations
using Varian's cold vapor accessory (VGA-76). The lowest reportable value for
Hg is <0.5 ppb. This module contains 1 fume hood dedicated to the ICP-AES.
The wet chemistry and carbon module contains 3 autotitrators for
performing various acid/base and/or absolute/equivalent point determinations,
1 microwave oven for measuring solids, pH meters, muffle furnaces for
calcining, and 2 Ol Analytical Corp. Model 700 Carbon Analyzers. These
analyzers measure total organic carbon, total inorganic carbon, and total
carbon with lower reportable values of <1 ppm. There is 1 fume hood in this
module for the muffle furnaces and sample dilution/measurement of organic
The sample preparation module contains drying ovens, muffle
furnaces, and microwave ovens. Here, heated acid digestions/dissolutions,
fusions, and filtering is performed. There is 1 fume hood to house and/or
evacuate the ovens and furnaces.
The sample receiving module is subdivided into sample storage and
an office type area. Samples are logged in and tracked from this point,
Results are also stored for a maximum of 1 year, after which the results and their
original data«t returned to the respective customer. For records, all data is
recorded into registered laboratory notebooks and the LIMS.
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Policke, T.A.; Bryant, M.F. & Spencer, R.B. Defense Waste Processing Facility prototypic analytical laboratory, article, January 1, 1991; Aiken, South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc1097608/m1/5/: accessed March 18, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.