Atomic absorption spectroscopy was used to determine the amount of aluminum in a sample of sunscreen. A standard solution of 1.00 ng Al /L was prepared and measured seven times to determine the detection and quantitation limits of the spectrometer. The standard measurements were: 0.72, 0.97, 1.40 , 1.21 , 0.79 , 1.17 , and 1.08 ng Al /L. Calculate the detection and quantitation limits for this instrument. detection limit: ng/L quantitation limit: ng/L