There is no dBA curve given as threshold of human hearing. dBA has absolutely noting to do with sone, or with phons, or sound pressure level in dB. 60 phons means as loud as a pure 1000 Hz tone with a level of 60 dB..
According to Simplyhired.com, the average salary for a forensic toxicologist is $74,000 per year. Those who are just starting their careers will most likely earn a salary in the $60,000 range. Forensic toxicologists who have specialized training and experience can earn an annual salary of $100,000 or more.
Over time, a forensic scientist can build experience which increases ones pay. Some forensic scientists who have been in the business for 5 years see their salaries double from $1500 to $3000 per month just because of the experience factor. Other forensic scientists eventually earn salaries that are between $35,000 and $50,000 per year. Determining ones pay usually involves several different factors. Location, type of facility, experience and certification all play parts in ones annual income. Another factor is what type of forensic scientist you are. Toxicologists can earn starting salaries up to $55,000 while a Forensic Quality Manager can earn up to $93,000. As mentioned, salaries can be determined by location.