hi i am raiyani mohanish. i studied in forensic science in anand, gujarat. i am in third semester, so that in coming days i have to choose a dessertation topic on any subject which relevant to the forensic science. i have knowledge about of the all subject of forensic like crime scene management, fingerprint, forensic toxicology, forensic chemistry, forensic ballistic, forensic medicine and all instrumentation which are used in science. so tell me some topic of dessertation topic which i take. i think on the forensic chemistry so please tell me some relevant to forensic chemistry moslty that topic in which used of instrument like gas chromatography or HPLC (High Performance Liquid Chromatography).