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A suspect in a shooting incident had his hands swabbed with 5% nitric acid. The swabs were then extracted into 20 cm of
Posted: Fri Mar 04, 2022 10:27 am
by answerhappygod
- A Suspect In A Shooting Incident Had His Hands Swabbed With 5 Nitric Acid The Swabs Were Then Extracted Into 20 Cm Of 1 (458.07 KiB) Viewed 43 times
A suspect in a shooting incident had his hands swabbed with 5% nitric acid. The swabs were then extracted into 20 cm of nitric acid. A portion of the sample solution was analysed by atomic emission spectroscopy and a response of 120 mV obtained. Next 0.010 cm of a standard solution containing 40 ug of lead per cm3 was added to 5 cm of the sample solution and the analysis repeated. A response of 133 mV was obtained from the "spiked" sample. Calculate the amount of lead recovered by the swabs in pg (please do not type units in the answer). Answer: