rationale for p3

Question 1

GD-AES stands for?

Answer 1

GLOW DISCHARGE- ATOMIC EMISSION SPECTROMETRY

Question 2

glow discharge optical emission spectrometry is a widely used tool for fast measurements of _______ profiles

Answer 2

DEPTH

Question 3

GD-AES is primarily used for the analysis of:

Answer 3

SOLID, CONDUCTING MATERIALS

Question 4

Emission spectrum generated by bombardment of a sample by argon ions in a _____________

Answer 4

sputtering process

Question 5

T OR F
Glow discharge lamp, analogous to hallow cathode lamp, in which the sample acts as the anode

Answer 5

FALSE - CATHODE

Question 6

it is a type of emission spectrometry that uses plasma to produce excited atoms and ions

Answer 6

PLASMA EMISSION SPECTROMETRY

Question 7

The gas usually used is ______ which is ionized by the influence of a strong electrical field either by a direct current or by radio frequency

Answer 7

ARGON

Question 8

T OR F
GD-AES was also routinely used for the bulk analysis of materials that are used in nuclear and uranium enrichment plants

Answer 8

TRUE

Question 9

in the instrumentation of plasma emission spectro, an initial sample may be subjected to a ___________ using chromatography or electrophoresis

Answer 9

SEPARATION STAGE

Question 10

what type of spectrometry is used in the quality control of a potable waters and pollution studies

Answer 10

PLASMA EMISSION SPECTROMETRY

Question 11

what are the two main types of plasma sources discussed in the plasma emission spectrometry

Answer 11

DIRECT CURRENT PLASMA AND INDUCTIVELY COUPLED PLASMA

Question 12

common version of the direct current plama

Answer 12

INVERTED V SHAPED ELECTRODE ASSEMBLY

Question 13

T OR F.
ICP torch consist of three concentric quartz tubes

Answer 13

TRUE

Question 14

inductively coupled plasma torch form a high temperature up to _______

Answer 14

10 000 K

Question 15

what devices used to concert the sample solution into an aerosol in plasma emission spectrometry

Answer 15

NEBULIZER

Question 16

in echelle optical system, it employs a combination of:

Answer 16

PRISM AND DIFFRACTION GRATING

Question 17

ICP-MS can detect:

Answer 17

80 ELEMENTS WITH PPB AND PPT

Question 18

it is where mass separation happens in ICP-MS

Answer 18

QUADROPOLE MASS ANALYZER

Question 19

interference/limitations encountered in ICP-MS

Answer 19

POLYATOMIC
ISOBARIC
MATRIX

Question 20

other name of flame emission spectrometry

Answer 20

FLAME PHOTOMETRY

Question 21

it measures the light absorbed by atoms dissociated by heat

Answer 21

ATOMIC ABSORBTRION SPECTROMETRY

Question 22

used to convert ions to atoms

Answer 22

ATOMIZER

Question 23

the first or critical step in all atomic spectroscopic procedures

Answer 23

ATOMIZATION

Question 24

it consist of cylindrical cathode, tungsten wire anode and inert gas

Answer 24

HOLLOW CATHODE LAMP

Question 25

flame serves as the ___________ in flame methode

Answer 25

SAMPLE CELL

Question 26

used in aas for background correction

Answer 26

DEUTERIUM CONTINUUM RADIATION SOURCE

Question 27

a relatively new light source for AAS

Answer 27

ELECTRODELESS DISCHARGE LAMP

Question 28

form of flames atomizer that has proved to be the most generally effective and popular

Answer 28

GRAPHITE TUBE or L’VOV FURNACE

Question 29

the newest of the optical atomic spectroscopic methods

Answer 29

ATOMIC FLUORENSCENCE SPECTROMETRY

Question 30

BIGGEST DISADVANTAGE OF FLUORESCENCE

Answer 30

QUENCHING EFFECT

Question 31

this method have a wide application in routine industrial analysis particularly in mineral processing and metallurgy

Answer 31

XRAY EMISSION SPECTROMENTRY

Question 32

in mass analyzer, the ions are sorted and separated based on their ____________

Answer 32

MASS TO CHARGE RATIO

Question 33

4 series of events happen in mass spectrometry

Answer 33

PRODUCTION OF IONS
ACCELERATION OF IONS
SEPARATION OF IONS
DETECTION OF IONS

Question 34

4 main parts of mass spectrometer

Answer 34

INLET
IONISATION
MASS ANALZER
DETECTOR