FRTR Field Sampling and Analysis Technologies Reference Guide

6 SAMPLE ANALYSIS TOOLS for VOCs, SVOCS, and PESTICIDES

6.2 EX-SITU ANALYSIS

6.2.19 Near IR Reflectance/Transmission Spectrometry

Use:

Airborne remote sensing identification of subsurface VOC contamination.

Description:

Near infrared (IR) reflectance/transmission spectroscopy utilizes reflectance signals resulting from bending and stretching vibrations in molecular bonds between carbon, nitrogen, hydrogen, and oxygen. Calibration is required to correlate the spectral response of each sample at individual wavelengths to known chemical concentrations from laboratory analyses.

Analytes:

1. Non-Halogenated VOCs
3. Halogenated VOCs

Media:

Soil/Sediment	Water	Gas/Air
BETTER	Not Applicable	Not Applicable

Selectivity:	Technique measures a part of the compound.
Susceptibility to Interference:	High.
Detection Limits :	500+ ppm (soil); 100+ ppm (water).
Turnaround Time per Sample:	Minutes.

Applicable To:

Screen/Identify	Characterize Concentration/Extent	Cleanup Performance	Long-Term Monitoring
BETTER	ADEQUATE	BETTER	BETTER

Quantitative Data Capability:	Data become quantitative with additional effort.
Technology Status:	Commercially available technology with limited field experience.
Certification/Verification:	Technology has not participated in CalEPA certification and/or CSCT verification program.
Relative Cost per Analysis:	Mid-range expense.

Limitations:

Not useful for analysis of complex matrices.
Not applicable to liquid or gas media.
Requires airborne platform.

ASTM Standards/EPA Methods:

No applicable ASTM standards or EPA methods are cited for this technology.

Sample Access/Collection Matrix

Sample Analysis Matrix

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