instrumental methods

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/4

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

5 Terms

1
New cards

what can be used for?

used to analyse substances

2
New cards

what can instrumental methods improve?

  • sensitivity (they can detect much smaller amounts)

  • accuracy - they give values closer to the true value

  • speed of testing

3
New cards

Flame Photometer

  • instrumental version of a flame test

  • can be used to analyse the metals present in a sample and concentration of metal ions in a solution

4
New cards

concentration of metal ions

  • analysis of a light intensity of the flame colours produced by metal ions can allow their concentration to be found

  • a calibration curve is plotted using data from standard solutions of known concentration

5
New cards

identification of metal ions

  • flame test colours are actually mixtures of different colours

  • the flame photometer separate out the colour to produce a line emission spectrum of the sample

  • different metals produce different emission spectra