Apparatus and system for identifying presence of a substance of interest, and method of using thereof

A system for detecting one or more target analytes in a sample or target object to be analyzed, the system comprising:

• at least one processor;
• and
• at least one memory configured to store data and software code portions executable by the at least one processor to cause performing the following steps:
• sensing, by at least one sensor, a level of an undesired substance in the sample;
• sensing, by the at least one sensor, a level of a desired substance in the sample;
• and
• determining, based on the level of the first undesired substance, an expected level of the desired substance in the sample.

An apparatus for detecting a chemical substance, the apparatus comprising:

• a radiation source configured to produce radiation of a first wavelength;
• an optical system configured to
• (i) illuminate a target object in a first direction by the radiation,
• (ii) receive back-scattered radiation from the first direction, in one or more second wavelengths, and (iii) direct the back-scattered radiation to a detector device, wherein the detector device is configured to measure intensity of the back-scattered radiation in at least one of the second wavelengths;
• and
• at least one processor configured to identify presence of a chemical substance of interest at the target object, based on said measured intensity,
• wherein the optical system comprises an optical path that defines a plane that is substantially orthogonal to the first direction.