3. Elemental Analysis I

Question 1

What are the four basic elements?

Answer 1

H, C, N and O

Question 2

What are the quantity elements (7)?

Answer 2

Na, Mg, P, S, Cl, K and Ca

Question 3

What are the essential trace elements (10)?

Answer 3

Mn, Fe, Co, Ni, Cu, Zn, Se, Br, Mo and I

Question 4

What are some of the elements that are harmful in even small doses (4)?

Answer 4

Mercury (Hg), lead (Pb), arsenic (As) and cadmium (Cd)

Question 5

What are the applications for elemental analysis?

Answer 5

environmental, clinical, pharma, industrial and food analysis

Question 6

What is AAS?

Answer 6

Atom Absorption Spectrometry

Question 7

What are the different techniques of AAS?

Answer 7

• Flame AAS
• Electrothermal AAS (ETAAS) = Graphite Furnace AAS (GFAAS)
• Hydride Generation AAS (HGAAS) (only hydrideforming elements, e.g. As, Se, Sn, Bi)
• Cold Vapour AAS (CVAAS) (only mercury (Hg))

Question 8

What is ICP?

Answer 8

Inductively Coupled Plasma

Question 9

What are the different techniques of ICP?

Answer 9

• ICP Optical Emmission Spectrometry (ICP-OES)
• ICP Atomic Emmission Spectrometry (ICP-AES)
• ICP Mass Spectrometry (ICPMS)