A portable instrument, based on laser-induced breakdown spectroscopy (LIBS), has been developed for the detection of metal contaminants on surfaces. The instrument has a weight of 14.6 kg, fits completely into a small suitcase (46 × 33 × 24 cm), and operates from 115 V ac. The instrument consists of a sampling probe connected to the main analysis unit by electrical and optical cabling. The hand-held probe contains a small laser to generate laser sparks on a surface and a fiber-optic cable to collect the spark light. The collected light is spectrally resolved and detected with the use of a compact spectrograph/CCD detector system. The instrument has been evaluated for the analysis of metals in the environment: Ba, Be, Pb, and Sr in soils; Pb in paint; and Be and Pb particles collected on filters. Detection limits in ppm for metals in soils were 265 (Ba), 9.3 (Be), 298 (Pb), and 42 (Sr). The detection limit for Pb in paint was 0.8% (8000 ppm), corresponding to 0.052 mg/cm2. The higher limit obtained for Pb in paint is attributed to the use of the 220.35-nm Pb(II) line instead of the stronger 405.78-nm Pb(I) line used for soils. Spectral interferences prevented use of the 405.78-nm line to determine Pb in paint. The surface detection limit for Be particles on filters was dependent on particle size and ranged from 21 to 63 ng/cm2. The detection limit for Pb particles on filters was 5.6 μg/cm2.
Methods of Soils Analysis Part 2, BlackC. A., Ed. (American Society of Agronomy, Madison, Wisconsin, 1965).
2.
Health and Environmental Chemistry: Analytical Techniques, Data Management, and Quality Assurance, GautierM. A., Ed. (Los Alamos National Laboratory, Los Alamos, New Mexico, Issued: May 1986; Revised: July 1993), LA-10300-M, Vols. 1–4, UC-907.
3.
FribushH. M. and FiskJ. F, “Field Analytical Methods for Superfund”, in Proceedings of the 2nd International Symposium on Field Screening Methods for Hazardous Wastes and Toxic Chemicals (U.S. Environmental Protection Agency, EMSL, Las Vegas, Nevada, 1991), pp. 25–29.
4.
OSWER Directive 9360.4-01, “Quality Assurance/Quality Control Guidance for Removal Activities-Sampling QA/QC Plan and Data Validation Procedures” (April, 1990).
5.
FranklinD., “LEAD: Still Poison After All These Years”, Health Sept./Oct. (1991).
6.
LEAD: Airborne Lead in Perspective, Committee on Biologic Effects of Atmospheric Pollutants, Div. of Medical Sciences (National Academy of Sciences, Washington D.C., 1972).
7.
“Installation Work Plan for Environmental Restoration, Rev. 3” (Los Alamos National Laboratory, Los Alamos, New Mexico, Nov. 1993), LA-UR-93-3987, Vol. I.
8.
AndersonM.S.BraymenS.McIntoshR.PrailJ.AndersonM. A.GrayJ.BaldwinD.ZamzowD.D'SilvaA. P. and EdigerR. D, “Laser Ablation ICP-Mass Spectrometry Determination of Th230 in Soils at the Gunnison, Colorado UMTRA Site”, Report Nos. IS-5106/UC-606 (Ames Laboratory, Ames, Iowa, February 16, 1994).
9.
Product literature from SCITEC Corporation, Richland, Washington, and TN Technologies, Austin, Texas.
10.
PiorekS., “XRF Technique as a Method of Choice for On-Site Analysis of Soil Contaminants and Waste Material”, in Advances in X-Ray Analysis, BarrettC. S.GilfrichJ. V.HuangT. C.JenkinsR. and PredeckiP. K, Eds. (Plenum Press, New York, 1990), Vol. 33, pp. 639–645.
11.
BernickM.BerryP. F.VootsG. R.PrinceG.AsheJ. B.PatelJ. and GuptaP, “A High Resolution Portable XRF Hgl2 Spectrometer for Field Screening of Hazardous Metal Wastes”, in Advances in X-Ray Analysis, BarrettC. S.GilfrichJ. V.HuangT. C.JenkinsR.McCarthyG. L.PredeckiP. K.RyonR. and SmithD. K, Eds. (Plenum Press, New York, 1992), Vol. 35, pp. 1047–1053.
12.
RadziemskiL. J. and CremersD. A, “Spectrochemical Analysis Using Laser Plasma Excitation”, in Laser-Induced Plasmas and Applications, RadziemskiL. J. and CremersD. A, Eds. (Marcel Dekker, New York, 1989), Chap. 7.
13.
EssienM.RadzeimskiL. J. and SneddonJ, J. Anal. At. Spectrometry3, 985 (1988).
14.
WisbrunR.NiessnerR. and SchroderH, Anal. Methods Instrum.1, 1 (1993).
15.
KIGRE, Inc., telephone conversation.
16.
CremersD. A. and RadziemskiL. J, Appl. Spectrosc.39, 57 (1985).
17.
AlkemandeC. Th. J.SnellemanW.BoutillierG. D.PollardB. D.WinefordnerJ. D.ChesterT. L. and OmenettoN, Spectrochim. Acta33B, 383 (1978).
18.
CremersD. A.RadziemskiL. J. and LoreeT. R, Appl. Spectrosc.38, 721 (1984).
19.
UebbingJ.BrustJ.SdorraW.LeisF. and NiemaxK, Appl. Spectrosc.45, 1419 (1991).
20.
GreiferB.MaienthalE. J.RainsT. C. and RasberryS. D, “Development of NBS Standard Reference Material No. 1579 Powdered Lead-Based Paint” (U.S. Department of Commerce, NIST, Washington, D.C., 1973), NBS Pub. No. 260-45.
21.
Moenke-BlankenburgL., Laser Microanalysis (Wiley, New York, 1989), Chap. 3, pp. 64–65, and references therein.
22.
DuffyC. and LongmireP, “Background Elemental Concentrations in Bandelier Tuff and Selected Soil Series, 1993”, draft report (Los Alamos National Laboratory, Los Alamos, New Mexico, 1993).
23.
EdigerR., Perkin-Elmer Corp., unpublished work.
24.
Product literature for the Spectrace 9000 courtesy of Spectrace Instruments, Inc., Mountain View, California.
25.
BernickM. B.PrinceG.SinghviR.KalnickyD. J. and KaelinL. P, “Use of Field-Portable X-Ray Fluorescence Instruments to Analyze Metal Contaminants in Soil and Sediment”, presented at the “PETRO-SAFE SHOW,” Houston, Texas (January 26, 1994), Document courtesy of Spectrace Instruments, Inc., Mountain View, California.
26.
BernickM.SprengerM.IdlerD.MillerD.PatelJ.KaelinL. and PrinceG, “An Evaluation of Field-Portable XRF Soil Preparation Methods”, in Proceedings of the 2nd International Symposium on Field Screening Methods for Hazardous Wastes and Toxic Chemicals (U.S. Environmental Protection Agency, EMSL, Las Vegas, Nevada, 1991, pp. 603–607.
27.
AsheJ. B.BerryP. F.VootsG. R.BernickM. and PrinceG, “A High Resolution Portable XRF Hgl2 Spectrometer for Field Screening of Hazardous Wastes”, presented at the 2nd International Symposium on Field Screening of Hazardous Wastes and Toxic Chemicals, EMSL, Las Vegas, Nevada (1991), Document courtesy of Spectrace Instruments, Inc., Mountain View, California.
28.
ArnoldS. D. and CremersD. A, “Rapid Determination of Metal Particles on Air Sampling Filters Using Laser-Induced Breakdown Spectroscopy”, J. Amer. Industrial Hygiene Assoc., accepted for publication.
29.
RhodesJ. R.StoutJ. A.SchindlerJ. S. and PiorekS, “Portable X-ray Survey Meters for In Situ Trace Element Monitoring of Air Particulates”, in Toxic Materials in the Atmosphere, ASTM STP 786 (American Society for Testing and Materials, Philadelphia, 1982), pp. 70–82.
30.
BernickM. B.CorcoranJ.CampagnaP. R.PiorekS.BerryP. F. and LittleS. R, “Measurement of Toxic and Related Air Pollutants”, in Proceedings of the 1992 U.S. EPA/A & WMA International Symposium (Air and Waste Management Association, Pittsburgh, Pennsylvania, 1992), p. 1035.
31.
CremersD. A., unpublished results.
32.
CremersD. A.BarefieldJ. E.II and KoskeloA. C., Appl. Spectrosc.49, 857 (1995).
33.
BlacicJ. D.PettitD. R.CremersD. A. and RoesslerN, “Laser-Induced Breakdown Spectroscopy for Remote Elemental Analysis of Planetary Surfaces”, in Proceedings of the International Symposium on Spectral Sensing Research, Maui, Hawaii (1992).
