field-based analysis of chlorinated volatile organic halocarbons
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Field-Based Analysis of Chlorinated Volatile Organic Halocarbons
http://www.aqrcolortec.com
AQR Color-Tec®
What is AQR Color-Tec® ?
Field test kit for chlorinated solvents Detects total chlorinated halocarbons (CVOHs) in
soil and water samples to less than 3 µg/L or µg/kg Provides qualitative data and estimated
concentrations Results in 3 minutes per sample Over 20,000 samples analyzed Initially developed in 1997 Tested and verified at EPA, DOD, DOE and state
chlorinated solvent site investigations Commercial production began 2007
Statistical Comparison of Split-Sample CG/MS Results to AQR Color-Tec® Zero Values Only (non-detections)
(typical chlorinated solvent site data set N = 42)
Parameter Concentration (µg/L)
Mean 0.362 Range 0 to 2.55Standard Deviation 0.73695% UCL of the mean 0.85790th Percentile Value 1.62695th Percentile Value 2.370
AQR Color-Tec® Method Detection Limits
AQR Color-Tec® detects all CVOHs to less than 3 µg/L
AQR Color-Tec® results consistently indicate a relative correlation to split sample laboratory GC/MS (EPA 8260B) comparison data. This graph shows the relative correlation by plotting AQR Color-Tec readings with the split sample GC/MS concentrations of total CVOHs detected in 61 groundwater samples from a chlorinated solvent site.
AQR Color-Tec® Comparison to GC/MS data
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GC/MS Concentrations AQR Color-Tec Readings
Pre-filtered ambient air is purged through the
sample, stripping the volatile compounds into
the headspace
Hand-Operated Vacuum Pump
(100cc)
Pump HandleColorimetri
c TubeTygon Tubing
Pump Stand
Carbon Filter
Purge Needle (long)
Headspace (~30%)
Water Sample
40 ml VOA Vial
Ambient air enters through carbon
filter
Air Flow
Air Bubble
s
AQR Color-Tec® Open-Loop Stripping Analysis Procedure
Purged volatile compounds pass through the headspace, needle,
and tubing into the colorimetric tube where they react and cause a distinct color change
Hand-Operated Vacuum Pump
(100cc)
Pump HandleColorimetri
c TubeTygon Tubing
Pump Stand
Carbon Filter
Purge Needle (long)
Headspace (~30%)
Water Sample
Ambient air enters through carbon
filter
Air Bubble
s
Air Flow
40 ml VOA Vial
AQR Color-Tec® Open-Loop Stripping Analysis Procedure
Analyze liquid or solid samples
Headspace
Water Sample
Added Water(de-ionized)
Headspace
Soil Sample
Water Set-up
Soil Set-up
AQR Color-Tec® Sampling Media
Samples and tubes are heated before Analysis
AQR Color-Tec® Conversion Table
Converts AQR Color-Tec® tube readings to µg/L or µg/kg
Based on comparison of Color-Tec data to GC/MS data using over 5000 water samples collected from 152 chlorinated solvent sites.
A “Median” estimated value for each Color-Tec reading was obtained using statistical comparison of Color-Tec data and GC/MS (EPA Method 8260B) data.
The “Range” value reflects the potential deviation from the Median value based on the Color-Tec and EPA Method 8260B comparison results.
48 Color-Tec Samples @ $25 each
6 Laboratory Samples @ $100 each
Definitive analysis provides high analytical accuracy, but sampling quantity is often limited to control costs, resulting in data gaps, sampling uncertainty, and low overall data quality
Laboratory Sampling Only
AQR Color-Tec® with Laboratory sampling
Total Cost = $1,800
24 Samples @ $100 each
The low per-sample cost of AQR Color-Tec® allows for more samples, resulting in increased coverage and reduced uncertainty.
The AQR Color-Tec® data is used to focus definitive analysis sampling onto critical areas.
Combining AQR Color-Tec® with laboratory sampling increases overall data quality at a lower cost by providing improved sampling coverage with high analytical accuracy.
Total Cost = $2,400
AQR Color-Tec® Increases Sampling Coverage
AQR Color-Tec® Comprehensive Instructions
Detailed Procedures Manual Kit Set-up Method principles Sample Collection Reading the tubes QA/QC procedures Trouble shooting guide Conversion Table References Method Applications
EPA Guidance FeaturingAQR Color-Tec®
Site Characterization Technologies for DNAPL Investigations September 2004; EPA 542-R-04-017; http://www.clu-in.org/download/char/542r04017.pdf
Understanding Procurement for Sampling and Analytical Services under a Triad Approach June 2005, EPA 542-R-05-022 http://www.epa.gov/swertio1/download/char/procurement.pdf
Conducting Contamination Assessments at Drycleaning Sites EPA Technology Innovation Program; State Coalition for Remediation of Drycleaners http://www.drycleancoalition.org/download/assessment.pdf
Using Dynamic Field Activities for On-Site Decision Making May 2003; OSWER No. 9200.1-40 EPA/540/R03/002; Chapter 5, http://www.epa.gov/superfund/programs/dfa/download/guidance/40r03002.pdf
State Guidance FeaturingAQR Color-Tec®
D H E C
South Carolina Department of Health and Environmental Control; Field Inspection Guidance http://www.schouse.org/reports/dhec/scdcrtfprogramstatusreport2007.doc
North Carolina Dry-Cleaning Solvent Cleanup Program Guidance for Conducting Drycleaner Facility Prioritization Assessments http://wastenot.enr.state.nc.us/SFHOME/DryClean/Download/PAR%20guidance.doc
Colorado Department of Public Health and Environment Drycleaner Remediation Guidance Document 2004 http://www.cdphe.state.co.us/HM/drycleanerguidance.pdf
EPA Triad Implementations Case Studies Using AQR Color-Tec®
Best Practices in Triad Approach to Characterize TCE National Laboratory Environmental Sciences Division Argonne, IL
http://www.triadcentral.org/user/doc/TPP-Hurlburt-BestPractices.pdf Adaptations to Triad as a Basis for Exit Strategy
Development Decision Logic Flow Chart 2006 Triad Poster Session; CH2MHill http://www.triadcentral.org/user/doc/TPP-Hurlburt-TriadAdaptations.pdf Successful Triad Implementations at Federal Sites AQR Color-Tec Method locates source areas at Calloway Drum Recycling Site, Auburndale, Florida http://www.triadcentral.org/user/doc/TPP-Callaway-Field_Based_Decision_Approach.pdf
Fast Track to Reducing Conceptual Site Model Uncertainty CH2MHill; Storage Tank Site ST-123 POL Fuel Yard http://www.Triadcentral.org/user/includes/dsp_profile.cfm?Project_ID=25
Using AQR Color-Tec for Source Identification and Delineation Naval Construction Battalion Center Davisville North Kingstown, RI - 2008 Triad Conference http://www.umass.edu/tei/conferences/Triad_PDF/Anderson.pdf
AQR Color-Tec® Featured OnEPA CLU-IN Technology Page
EPA CLU-IN web page provides information about treatment and characterization technologies. AQR Color-Tec is featured with other test kits in the technology descriptions and selection tools section
Hardware Kit = $1,195
20 Sample Pack = $395
Cost per sample is $19.95 (Basic QA/QC included) Provided in 20-sample kits with all required expendables Hardware kit includes piston pump, pump stand, heating
equipment, and carrying case Professional technical support is included with any purchase Customized comprehensive training courses are available
AQR Color-Tec® Equipment and Expendables
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