Quantitative Analysis Techniques

Question 1

Any method used for determining the amount of a chemical in a sample

Answer 1

Quantitative Analysis

Question 2

Measure a physical property, such as adsorption of light, density, and magnetic susceptibility

Answer 2

Physical Methods

Question 3

Involve chemical reactions, such as oxidation, precipitation, or neutralization to form a new chemical compound

Answer 3

Chemical Methods

Question 4

The most common form of infrared spectroscopy. The radiation that passes through the sample is recorded.

Answer 4

Fourier Transform Infrared Spectroscopy (FTIR)

Question 5

An analytical technique used for the quantification of metal atoms by measuring the intensity of light emitted by the atoms in excited states.

Answer 5

Atomic Emission Spectroscopy (AES)

Question 6

An analytical technique which is used for the identification of compositions of different elements in a specific sample.

Answer 6

Energy-dispersive X-ray Spectroscopy (EDXS)

Question 7

An x-ray instrument used for routine, relatively non-destructive chemical analyses of rocks, minerals, sediments and fluids.

Answer 7

X-ray Fluorescent Spectroscopy (XRF)

Question 8

Identify alloys, detect tramp elements, deliver geochemical data, analyze precious metals, and determine coating weight and plating thickness, to ensure material chemistry specifications are met.

Answer 8

Handheld XRF Analyzers

Question 9

Inherently deals with the determination of small amounts of chemical elements

Answer 9

Trace Elemental Analysis (TEA)

Question 10

Quantitative analytical techniques which employ a titration in comparing an unknown with a standard.

Answer 10

Volumetric or Titrimetric Analyses

Question 11

Solution containing a known concentration of reactant

Answer 11

Standardized Solution

Question 12

The titration proceeds until reactant [B] is just consumed (stoichiometric completion).

Answer 12

Equivalence Point

Question 13

A substance that have distinctly different colors in acidic and basic media, is usually added to the reaction flask to signal when and if all the analyte has reacted.

Answer 13

Indicators

Question 14

The point where sufficient indicator has been converted for detection.

Answer 14

End Point

Question 15

A titration method used to determine the concentration of an unknown using an excess amount of a compound with a known concentration.

Answer 15

Back titration

Question 16

Basic titration method that involves reaction between the unknown compound and the compound with known concentration.

Answer 16

Direct titration

Question 17

The remaining amount of the reagent added in excess

Answer 17

Titrand (Back Titration)

Question 18

The unknown compound

Answer 18

Titrand (Direct Titration)

Question 19

A quantitative analysis method to determine an acid’s or base’s concentration by precisely neutralizing them with a standard solution of either acid or base of known concentration.

Answer 19

Acid-Base Titration

Question 20

Also known as an oxidation-reduction reaction. In this type of titration, the chemical reaction takes place with a transfer of electrons in the reacting ions of aqueous solutions.

Answer 20

Redox Titrations

Question 21

Based on the insoluble precipitate formation when the two reacting substances are brought into contact.

Answer 21

Precipitation Titration

Question 22

Where an undissociated complex is formed at an equivalence point. It is greater than the precipitation titrations, and there will be no error due to co-precipitations.

Answer 22

Complexometric Titration

Question 23

A method in analytical chemistry to determine the quantity of an analyte based on the mass of a solid.

Answer 23

Gravimetric Analysis

Question 24

Involves separating components of our mixture by heating or chemically decomposing the sample.

Answer 24

Volatilization Chemistry

Question 25

Uses a precipitation reaction to separate one or more parts of a solution by incorporating it into a solid.

Answer 25

Precipitation Reaction

Question 26

A method used to separate and quantify ions of a substance, usually a metal.

Answer 26

Electrogravimetry

Question 27

A method of thermal analysis in which changes in physical and chemical properties of materials are measured as a function of increasing temperature or as a function of time.

Answer 27

Thermogravimetry

Question 28

The technique of determining compounds’ elemental composition (empirical formula) by combusting the samples into simple and small molecules from which the information about the original composition can be extracted.

Answer 28

Combustion Analysis

Question 29

A method of determining the quantitative content of gases in ferrous and nonferrous materials where gases are physically and chemically adsorbed by the materials and later removed and swept by from the fusion area by an inert carrier gas.

Answer 29

Inert Gas Fusion