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Analytical Chemistry > ACHEM Chemical Analysis > Flashcards

ACHEM Chemical Analysis Flashcards

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1
Q

Involves the application of methods and techniques to obtain specific objective quantitatively and qualitatively including the structural information on the nature of matter.

A

Analytical Chemistry

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2
Q

Involves the application of methods and techniques to obtain specific objective quantitatively and qualitatively including the structural information on the nature of matter.

A

Analytical Chemistry

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3
Q

Also known as wet chemical analysis which uses purely chemicals

A

Classical Techniques

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4
Q

Measures the contamination in terms of shipping and laboratory sources

A

Trip blank

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5
Q

The standard in this method became regulatory

A

Regulatory method

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6
Q

Systematic procedure to achieve specific objectives using specified techniques

A

Method

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7
Q

Have the highest metrologicql qualities whose operation can be described and understood instantly

A

Primary Method

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8
Q

Measures the contamination in laboratories sources

A

Method or Instrument blank

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9
Q

Set of written instructions on how to apply method in a particular sample

A

Procedure

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10
Q

E method to measure or determine chemical of physical properties of an element, mixture or substance

A

Analytical Techniques

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11
Q

Set of guidelines for analysis specifically created by a company

A

Protocol

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12
Q

Use to analyse large number of samples in short period of time to identify samples that give too (+) result

A

Screening

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13
Q

Graphite Furnace Atomic Absorption Spectro is an example of
Tech, meth, procedures or protocol

A

Techniques

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14
Q

Signal is either for analyte, matrix, or blank and have the lowest concentration of noise (analyte) in test sample that is distinguished from zero

A

Limit of Detection

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15
Q

Same of lod but with reasonable precision and accuracy

A

Limit of quantification

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16
Q

In most instrumental method, it is applied only when it is possible to determine the BASELINE NOISES obtained from BLANK DETERMINATION

A

Noise ratio or Based on numerical value of signal

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17
Q

A sample that contain all the components except analyte

A

Blank

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18
Q

It is an indication of reproducibility or a measurement

A

Precision

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19
Q

Chemical analysis qre affected by these types of errors

A

Gross, systematic and random errors

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20
Q

The focus of interest in the sample or the one being analyze

A

Analyte

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21
Q

They are often large and may cause a result to be either high or low

A

Gross errors

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22
Q

To improve the reliability and to obtain information about the variability of the results, sample, ______ is carried through an analytical procedures

A

Replicates

23
Q

Causes the mean of a set of data to differ from the accepted value

A

Systematic or determinate error

24
Q

We just get a portion of a sample or ____ to be subjected on the analysis

A

Aliqout

25
Q

Measure of the agreement between an experimental result and qn expected or true value

A

Accuracy

26
Q

An experimental measurement that is proportional to analyte concentration

A

Signal

27
Q

A process of collecting small amount of material whose composition represent the bulk of the material being analysed

A

Sampling

28
Q

Components of the sample other than the analyte

A

Matrix

29
Q

Casues data to be more scattered or less symmetrically around the mean

A

Random error or interminate

30
Q

False positive should be ___ than false positive

A

Less

31
Q

______ is a statistical tool used to test and decide whether the result should be accepted or rejected

A

Q test

32
Q

______ is a statistical tool used to test and decide whether the result should be accepted or rejected

A

Q test

33
Q

Probability that the true mean lies within the certain interval

A

Confidence level

34
Q

Another test method in deciding for rejecting or accepting values suggested by ISO and American Society for testing and materials

A

Grubbs test

35
Q

Range values within which the true mean is expected to lie with a certain probability

A

Confidence interval

36
Q

Probability that the result is outside the confidence interval

A

Significance level

37
Q

Boundaries of the confidence interval

A

Confidence limit

38
Q

Systematic error affect ________.

A

Accuracy

39
Q

Gross error or blunder can be eliminated or corrected and often leads to ________.

A

Outliers

40
Q

Do Random error or indeterminate can be determined??

A

No because they are always present

41
Q

Gross or blunder affects Accuracy yes or no.

A

Yes

42
Q

Random error or indeterminate cannot be eliminated or corrected but can be minimized by increasing the number of measurements. True or false

A

True

43
Q

The results in Systematic errror or determinate are reproducible because results are usually inconsistent in both magnitude and direction

A

Consistend false

44
Q

The results are reproducible in random error

A

No 50/50 of being + or -

45
Q

Using the wrong reagent or instrument is an example of

A

Gross error or blunder

46
Q

A pipette that consistently deliversbthe wrong volume is an example of

A

Systematic error

47
Q

Using the pipette in a wrong position during the measurement is an example of

A

Random error

48
Q

If the Q is greater than Q crit,

A

Reject

49
Q

If G is greater than G crit

A

Reject

50
Q

If Q crit is greater then Q

A

Retain

51
Q

Non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used

A

Measurement uncertainty

52
Q

Process by which a sample population is reduced in size to an amount of homogeneous material that can be conveniently handled in the lab in which the composition is representative

A

Sampling

53
Q

During acid spills, which of the following can be applied to the spill before treating it with adsorbents chemical

A

Na2CO3

54
Q

These are any waste materials that can be retrieved from the waste stream and free from contamination that ste materials that can be suitable beneficial use

A

Recyclable Waste

Analytical Chemistry (9 decks)

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