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1. Analytical techniques that can be used for trace metal measurements include:

ID: 536018 • Letter: 1

Question

1. Analytical techniques that can be used for trace metal measurements include: (a) atomic absorption spectrometry (AAS), (b) atomic fluorescence spectrometry (AFS), (c) inductively coupled plasma optical emission spectroscopy (ICP-OES), (d) X-ray fluorescence spectrometry (XRF), (e) neutron activation analysis (NAA), and (f) inductively coupled plasma mass spectrometry (ICP-MS).

(i) Identify the methods that are based on atomic spectroscopy

(ii) Identify the methods that can directly work on solid samples.

Explanation / Answer

Answer (i) : 1. Atomic Spectroscopy: Definition: The analytical technique used to determine the elemental composition of an analyte by its electromagnetic spectrum.

2. Methods that are based on Atomic Spectroscopy: (a) atomic absorption spectrometry (AAS), (b) atomic fluorescence spectrometry (AFS),(c) inductively coupled plasma optical emission spectroscopy (ICP-OES), (f)inductively coupled plasma mass spectrometry (ICP-MS).

Answer (ii):the methods that can directly work on solid samples: (d) X-ray fluorescence spectrometry, (e) neutron activation analysis (NAA), (c) inductively coupled plasma optical emission spectroscopy (ICP-OES)

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