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Examples of chemical hazard detection

Cyanide to 2 ppb levels and T2 toxin to ppm levels, "CW agent detection via SERS". EIC labs Summary
Cyanide and other anions detection, "Development of a Surface Enhanced Raman Spectroscopy (SERS) based sensor for the long term monitoring of toxic anions" Strategic Environmental Reserch and Develop Program Report.
On-Line Spectroscopic Characterization of Sodium Cyanide with Nanostructured Gold Surface-Enhanced Raman Spectroscopy Substrates, Tessier P.M.; Christesen S.D.; Ong K.K.; Clemente E.M.; Lenhoff A.M.; Kaler E.W.; Velev O.D. Applied Spectroscopy, 56, 12, 2002, pp. 1524-1530.
Pinacolyl methlphosponic acid at ppb levels, "CW agent detection via SERS". EIC labs Summary
TNT and 2,4 DNT to ppb levels, "Buried Landmine detection with SERS" EIC labs Summary

Examples of bioagent detection with Surface enhanced Raman

Surface-enhanced Raman sensors: early history and the development of sensors for quantitative biowarfare agent and glucose detection, Christy L. Haynes, Chanda Ranjit Yonzon, Xiaoyu Zhang and Richard P. Van Duyne, Journal of Raman Spectroscopy 2005; 36: 471–484.
Additional information avaliable from Prof. R. Van Duynes group at Northwestern University

Water contamination detection

Benzoylecgonine to femtogram levels (Mesophotonics and Deltu NU application note
Federation remediation technologies round table (FTTR) “Field Sampling and Analysis Technologies Matrix” including comments on SERS detection to ppb levels.
Perchlorate and phosphate detection to ppb levels with sers, "Detection of anions by normal Raman spectroscopy and surface-enhanced Raman spectroscopy of cationic-coated substrates", Mosier-Boss PA, Lieberman SH,
Appl Spectrosc. 2003 Sep;57(9):1129-37.  
SERS of Dithiocarbamate Pesticides Adsorbed on Silver Surface,  Jae Soo Kang, Seon Yeong Hwang, Chul Jae Lee, and Mu Sang Lee,  Bull. Korean Chem. Soc. 2002, Vol. 23, No. 11, pp1604-1610
Reference Raman spectra of eleven miscellaneous pesticides, Nicholas ML, Powell DL, Williams TR, Thompson RQ, Oliver NH. J Assoc Off Anal Chem. 1976 Nov;59(6):1266-75.
Pesticides Determination by Raman Methods
FT-Raman Spectroscopy : Analytical Tool for Routine Analysis of Diazinon Pesticide Formulations, S.G. Skoulika, C.A. Georgiou and M.G. Polissiou, Talanta, 51, 599, 2000
Rapid Quantitative Analysis of Organophosphorus Pesticide Formulations by FT-Raman Spectroscopy, S.G. Skoulika, C.A. Georgiou and M.G. Polissiou, Internet J. Vib. Spec 4, 3, 4, 2000.
Quantitative Determination of Fenthion in Pesticide Formulations by FT-Raman Spectroscopy, S.G. Skoulika, C.A. Georgiou and M.G. Polissiou, Appl. Spectrosc., 53, 1470, 1999. 
Bio organism detection including legionella and giadia bacteria and oocysts. "Evaluation of the Doodlebug: A Biochip for Detecting Waterborne Pathogens", Ann E. Grow, Michael S. Deal, Peggy A. Thompson and Laurie L. Wood, Water intelligence online 2003.

Combining Surface enahnced Raman detection with other chem bio etection techniques

Characterization of SERS substrates for chem/bio processing systems,  Joseph A. Miragliotta, Jennifer L. Sample, Stergios J. Papadakis, Proc. SPIE Vol. 5927, p. 156-164, Plasmonics: Metallic Nanostructures and Their Optical Properties III; Mark I. Stockman; Ed. Aug. 2005
Addition information avaliable from Prof J. Miraliotta group at John Hopkins University

Field portable first responder instrument examples

Smith Industries ResponderR
Ahura First Defender