M16

32問 • 1年前

問題一覧

measures the chemical substance by measuring the amount of light absorbed through a light intensity that passes through the solution

spectrochemistry

provides polychromatic light and generate sufficient energy to measure the analyte of interest

light source

what kind of light does light source provide?

polychromatic light

emits radiation that changes in intensity

continuum source

;it is type of light sourece that is widely used

continuum source

continuum souce examples

tungsten, deuterium, xenon lamps

line source example

mercury, hollow, cathode lamps

emits limited radiation and wavelength

line source

Minimizes unwanted or stray light and prevents the entrance of scattered light

entrance slit

isolates specific or individual wavelength of light

monochromator

kinds of monochromator

prisms, diffraction gratings, filters, holographic gratings

this can be rotated, allowing only the desired wavelenght to pass through the cuvette

prisms

most commonly used; better resolution than prism

diffraction gratings

simple, least expensive, not precise but useful

filters

Controls the width of light beam (band pass) allow only a narrow fraction of the spectrum and reach the sample cuvette

exit slit

cuvette is also called

absorption cell, analytical cell, sample cell

it holds the solution where concentration is to be measured

cuvette

kind of Cuvette that is commonly used

aluminum silica glass

used for measurement of solution requiring visibles and ultraviolet spectrum

quartz/plastic

kinds of cuvette

aluminum silica glass, quartz/plastic, borosilicate glass, soft glass

detects and converts transmitted light into photoelectric energy

photodetector

the most common random error is spectrochemistry

straylight

detects the amount of light that passes through the sample in the cuvette

photodetector

;most commonly used detector ;visible and VV regions ;excellent sensitivity

photomultiplier tube

The simplest detector ; least expensive ; temperature sensitive

photocell

not as sensitive as PMT but with excellent linearity

photodiode

Kinds od detectors

photocell, phototube, photomultiplier tube, photodiode

displays output of the detection system

meter device

simplest type of spectrophotometer

single beam spectrophotometer

splits monochromatic light onto 2 components

double beam spectrophotometer

uses 2 photodetectors

double beam in space

uses 1 photodetector

double beam in time

CHAPTER-9

CHAPTER-9

CHAPTER-5

CHAPTER-5

CHAPTER 3

CHAPTER 3

HIS 3-5

HIS 3-5

BIOSTAT 2-3-6

BIOSTAT 2-3-6

BIOSTAT- 1

BIOSTAT- 1

ANACHEM M3

ANACHEM M3

ANACHEM M4

ANACHEM M4

HIS MOD 9-11

HIS MOD 9-11

earth origin

earth origin

BIOSTAT-CHAPTER- 7

BIOSTAT-CHAPTER- 7

BIOSTAT-CHAPTER-8

BIOSTAT-CHAPTER-8

BIOSTAT-CHAPTER-9

BIOSTAT-CHAPTER-9

ANACHEM CHAP 9

ANACHEM CHAP 9

ANACHEM CHAP 10

ANACHEM CHAP 10

Oral com

Oral com

CHAPTER 9 (mod-12-13)

ユーザ名非公開 · 56問 · 1年前

CHAPTER 9 (mod-12-13)

POT UNIT 4

POT UNIT 4

BIOSTAT CHAP 10

BIOSTAT CHAP 10

ANACHEM 11-12

ANACHEM 11-12

問題一覧

measures the chemical substance by measuring the amount of light absorbed through a light intensity that passes through the solution

spectrochemistry

provides polychromatic light and generate sufficient energy to measure the analyte of interest

light source

what kind of light does light source provide?

polychromatic light

emits radiation that changes in intensity

continuum source

;it is type of light sourece that is widely used

continuum source

continuum souce examples

tungsten, deuterium, xenon lamps

line source example

mercury, hollow, cathode lamps

emits limited radiation and wavelength

line source

Minimizes unwanted or stray light and prevents the entrance of scattered light

entrance slit

isolates specific or individual wavelength of light

monochromator

kinds of monochromator

prisms, diffraction gratings, filters, holographic gratings

this can be rotated, allowing only the desired wavelenght to pass through the cuvette

prisms

most commonly used; better resolution than prism

diffraction gratings

simple, least expensive, not precise but useful

filters

Controls the width of light beam (band pass) allow only a narrow fraction of the spectrum and reach the sample cuvette

exit slit

cuvette is also called

absorption cell, analytical cell, sample cell

it holds the solution where concentration is to be measured

cuvette

kind of Cuvette that is commonly used

aluminum silica glass

used for measurement of solution requiring visibles and ultraviolet spectrum

quartz/plastic

kinds of cuvette

aluminum silica glass, quartz/plastic, borosilicate glass, soft glass

detects and converts transmitted light into photoelectric energy

photodetector

the most common random error is spectrochemistry

straylight

detects the amount of light that passes through the sample in the cuvette

photodetector

;most commonly used detector ;visible and VV regions ;excellent sensitivity

photomultiplier tube

The simplest detector ; least expensive ; temperature sensitive

photocell

not as sensitive as PMT but with excellent linearity

photodiode

Kinds od detectors

photocell, phototube, photomultiplier tube, photodiode

displays output of the detection system

meter device

simplest type of spectrophotometer

single beam spectrophotometer

splits monochromatic light onto 2 components

double beam spectrophotometer

uses 2 photodetectors

double beam in space

uses 1 photodetector

double beam in time