Macmillan Learning The lithium concentration in serum taken from a patient being treated with lithium for manic-depressive illness was analyzed using flame emission spectroscopy. A sample of the serum gave a reading of 259 units for the intensity of the 671 nm red. emission line. Then, 1.00 mL of a 11.6 mM lithium standard was added to 9.00 mL of serum. This spiked serum gave an intensity reading of 582 units at the 671 nm emission line. What is the original concentration of Li* in the serum? [Lit] = mM

Macmillan Learning The lithium concentration in serum taken from a patient being treated with lithium for manic-depressive illness was analyzed using flame emission spectroscopy. A sample of the serum gave a reading of 259 units for the intensity of the 671 nm red. emission line. Then, 1.00 mL of a 11.6 mM lithium standard was added to 9.00 mL of serum. This spiked serum gave an intensity reading of 582 units at the 671 nm emission line. What is the original concentration of Li* in the serum? [Lit] = mM

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter9: Atomic Absorption And Atomic Fluorescence Spectrometry

Section: Chapter Questions

Problem 9.15QAP

See similar textbooks

Similar questions

The lithium concentration in serum taken from a patient being treated with lithium for manic-depressive illness was analyzed using flame emission spectroscopy. A sample of the serum gave a reading of 276 units for the intensity of the 671 nm red emission line. Then, 1.00 mL of a 10.8 mM lithium standard was added to 9.00 mL of serum. This spiked serum gave an intensity reading of 621 units at the 671 nm emission line. What is the original concentration of Li+ in the serum?
The lithium concentration in serum taken from a patient using flame emission spectroscopy. A sample of the serum gave a reading of 178 units for the intensity of the 671 nm red emission line. Then, 1.00 mL of a 11.8 mM lithium standard was added to 9.00 mL of serum. This spiked serum gave an intensity reading of 5.30×102 units at the 671 nm emission line. What is the original concentration of Li+ in the serum?
Which one of the following GC detectors are used for the quantification of drugs or metabolites in biological fluids? I. Nitrogen phosphorus II. Electron capture III. Radiochemical detector Select one: a. Only II b. II and III c. I, II and III d. I and II e. I and III
Which of the following statements are true of atomic emission spectroscopy (AES)? I. Atoms are promoted to an excited state with a laser. II. Atoms are promoted to an excited state by gaining energy from collisions with other atoms or from the high thermal energy of the flame. III. The intensity of emitted light is proportional to analyte concentration. IV. Plasma often replaces flame in AES A. III and IV B. I, III, and IV C. II, III, and IV D. II and III
In a mass spectrometer, two beams of singly ionized isotopes of uranium 23592U and 23892U are injected with velocity 1.4*105m/s into a magnetic field of strength 0.7 T normally. Compute the distance d between the two trace lines of the isotopes after they complete one semi-circle. (Given: masses of the isotopes are m235 = 3.9*10-25 kg and m238 = 3.95*10-25) a) 1.26 cm b) 0.63 cm c) 0.32 cm d) none of these.
A chemist weighing 65.21 kg takes her NMR sample from the first floor to the third floor, which is 20 meters up, in 60 seconds. How much power has she generated?
Seven replicate measurements of a sample containing 2.00 ng of Hg per liter gave readings of 188, 248, 194, 212, 203, 240, and 214 in an atomic emission experiment. d) Estimate the detection limit of this method
mass of copper = 2.494g; Wavelength = 830.6 Volume of volumetric flask - 50 ml Here's the absorbance of all the test tube
Does the amount of radiation (cpm) increase or decrease as the thickness of the shielding increases (while the distance between the source and the sensor stays the same)? Explain
Over a period of 3.0 hours, a detector sensitive to 450 nm photons collects a total of 2.3 x10 -2 J of energy. How many photons struck the detector during this period of time?
The mass absorbtion coefficient for Ni measured with Cu kalpha lines is 49.2 cm2 /g Calculate the thickness of a nickel foil that was found to transmit 47.8% of the incident power of a beam of Cu k alpha radiation The density of Ni is 8.90g/cm2.
Where does 276 and 476 fall in the spectrum A. uv B. X-Ray c. Inflared light d. Microwave