Pre and Post Test: ICP-MS and XRD

What is the main advantage of using ICP-MS over other analytical techniques for trace element analysis?

• Higher sensitivity

• Lower cost

• Faster analysis time

• None of the above

What is the main component of the sample introduction system in an ICP-MS instrument?

• Nebulizer

• Mass analyzer

• Ion detector

• None of the answers

What is the purpose of a mass spectrometer in ICP-MS?

• To ionize the sample

• To separate and detect ions based on their mass-to-charge ratio

• To convert the sample into a gas

• To produce a visible light emission from the sample

What is the purpose of a calibration curve in ICP-MS analysis?

• To determine the isotopic composition of the sample

• To calculate the concentration of the analyte in the sample

• To correct for matrix effects

• To identify spectral interferences

Which of the following is NOT a potential application of ICP-MS in biotechnology?

• Analysis of trace elements in biological samples

• Determination of metal concentrations in bioreactors

• Detection of impurities in biopharmaceuticals

• Diagnosis of infectious diseases

Which of the following is a common application of ICP-MS in biotechnology?

• Detection of protein concentrations in biological samples

• Analysis of DNA sequences in bioreactors

• Determination of metal concentrations in biopharmaceuticals

• Diagnosis of genetic disorders

Why is sample preparation important for ICP-MS analysis of biological samples?

• To remove organic matrix effects

• To remove inorganic matrix effects

• To reduce interferences

• All of the answers

Why is collision-reaction cell technology used in ICP-MS for the analysis of biological samples?

• To increase sensitivity

• To improve mass resolution

• To reduce interferences

• All of the above

What is the purpose of using a monochromator in X-ray diffraction?

• To focus the X-rays

• To select a specific wavelength of X-rays

• To measure the intensity of X-rays

• To generate X-rays

What is Bragg's Law used for in X-ray diffraction?

• To determine the intensity of X-rays

• To measure the wavelength of X-rays

• To calculate the crystal structure from X-ray diffraction data

• To measure the refractive index of X-rays