Abstract: A method and apparatus for identifying and differentiating multicomponent mixtures and identifying contamination thereof using direct comparison of characteristics of the analyte and characteristics of a standard sample of a known compound. These characteristics were obtained using methods and apparatus of spectrum analysis ensuring the possibility of receiving characteristic optical shapes (multi-dimensional signatures) of samples under comparison, which signatures represent a total set of spectral distributions of intensity values for light subjected to interaction with a sample, and the process of correlation of relative intensity values of light subjected to interaction with a sample at assigned wavelength.

Abstract: A surface-enhanced Raman scattering surface is prepared by anodizing an aluminum or aluminum alloy substrate with reversed polarity current to form pores of anodized oxide on the substrate, and electrodepositing silver or copper into the pores of the anodic oxide film to form needle-shaped metal particles in the pores of the anodic oxide film.

Abstract: Analytes are detected and/or quantified in electrolytic solutions suing Surface Enhanced Raman Scattering spectroscopy (SERS) by adsorbing the analyte on the surface of an active metal electrode placed into an electrolytic solution being analyzed and which provide periodic regeneration or modulation of surface concentration of SERS-active sites. As this occurs, the ambiguity of the measured values of the analyte signal, which is caused by instability of the surface activity of the sensor, is eliminated by optically normalizing to the total SERS signal determined by active metal adatoms.

Abstract: Process and device for card generation and labeling for extracted or manufactured consumer products, which enables nondestructive contactless product inspection and/or authentication, including card generation and inspection of packaged products without damage to containers, identification of trade specimens of a product made by a specific manufacturer at every step of its distribution, and detection of counterfeit products and/or detection of product taint or contamination. The process uses the apparatus and methods of spectral analysis to form characteristic multidimensional optical images (signatures), fingerprints, and/or data profiles. Such images are presented as a digital, magnetic, graphic, holographic or other code that can be read by special devices and/or by visual comparison.

Abstract: A method and apparatus for identifying and differentiating multi-component mixtures and identifying contamination thereof using direct comparison of characteristics of the analyte and characteristics of a standard sample of a known compound. These characteristics were obtained using methods and apparatus of spectrum analysis ensuring the possibility of receiving characteristic optical shapes (multi-dimensional signatures) of samples under comparison, which signatures represent a total set of spectral distributions of intensity values for light subjected to interaction with a sample, and the process of correlation of relative intensity values of light subjected to interaction with a sample at assigned wavelengths.