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NearIR-VisibleSpectrophotometer

Near Infrared Spectroscopy

NIRVIS system

NIRVIS NIRVIS

NIRVIS

Accessories

g NIR : 800nm - 2500nm ( 4000cm-1 ~ 12,500cm-1 )

g O-H, C-H, N-H harmonics combination

g .

-> Chemometric

g NIR .-> . ->

-> .

g , -> .

NIR Spectroscopy (Near Infrared Spectroscopy )

UV VIS MID IR (FAR IR)

X-ray

400nm 700nm 2500nm

15000cm-1 4000cm-1

NIR Chemometric

g 1950

g 1968 Dr. Karl Norris ( ), NIR .

( )

(Multiple Linear Regression) NIR

.

(NIR ) .

g 1970 , (In-process)

.

g 1970 , NIR ,

.

g 1980 , , , , , , , .

g FT-NIR Chemometric software

.

(FTIR Spectroscopy) NIR (Near Infrared Spectroscopy)

NIR (4,000 - 10,000cm-1)

Overtone Combination

Mid-IR

.

MLR, PLS

Chemometric

.

.

Mid-IR (400 - 4000cm-1)

functional group

.

MID IR

KBr

.

(Mid IR )

FT-NIR

h Fourier Transform

h

.

h

S/N .

h : Michelson inteferometer type,

Quartz Wedge Interferometer type

h (On-line), (At-line)

LAB (Off-line)

NIR

NIR

h NIR chemometrics

1000nm ~ 2500nm

.

h

.

scanning

.

Quartz Wedge Interferometer type

Double refractive prism (oriented

quartz plate ( (d)

)

interferogram .

100

- . -Portable type

. ( , )

Michelson interferometer

Beam splitter Fixed Mirror

Moving Mirror

interferogram .

Moving Mirror

portable type ,

On-line .

FT-NIR

,

NIRVIS

Quartz Wedge Interferometer reference beam sample beam . Sample beam

Cuvette cell Optical fiber probe Reference beam

. interferogram A/D converter computer Fourier

Transform (Sample/reference)

.

N I R V I S

NIRVIS

Quartz Wedge Interferometer

N I R V I S

+45o birefringent wedge -45o polarizer . double refractive prism

90o intensity 0

intensity .

NIR Detector

Photodiode

Light Source

Filter

LensPolarizer 45o

Compensator

Double refractive prisms

Polarizer -45o

Laser

Lens

P

P1

P245o

P

P1

P2

P

P

d

N I R V I S

Quartz wedge interferometer

Buhler Quartz wedge interferometer quartz

. d Quartz ordinary

beam extraordinary beam . plate

() . = 2dk (no-nao) ( k - wavenumber of light, no,nao - refractive index for ordinary and extraordinary beams, respectively )

interferometer quartz plate interferogram

. quartz quartz plate

quartz plate .

Michelson interferometer Vs Quartz wedge interferometer

Quartz (no-nao) 0.01 quartz wedge . Michelson interferometer Quartz wedge interferometer quartz plate

( ) 100

Quartz wedge inerferometer Micheson interferomter

. Michelson interferomter .

High precision

NIR source photodiode Laser () interferogram .

interferogram NIR interferogram calibration

.

NIRVIS

, , (Homogenisation degree)

, ,

&

Homo-/ copolymer ,

(phosphates, Chloride, acetate salts) (carboxylic acids, amines, aldehyderesin)

Sugar (PVC, PVDC, PE, PP) (Lactoses, fillers, chemicals) Sugar

(, , )

(, , , )

Cuvette

Cell

Glass, Quartz,

PMMA micro cell (Disposable cell)

Transmittance probe

Remote control system Single fiber 3m, 1.5mm path length

tanks, Acid, Base, Media, Organic solvent (100m) remote control

Accessories - Transmission Method

Quartz glass probe

Transmittance probe Total length 400mm, depth 300mm,

probe diameter 18mm,

Quartz glass suprasil 300

Path length : 1mm, 2mm, 5mm, 10mm

(, ) ,

solvent

Transmittance method Optical fiber head sample

: Teflon vessel

->

Rotating sampling system

Accessories - Transmission Method

Transflectance probe TFKO accessory (Transflectance method)

: Optical fiber probe Transflectance kit

: , , Gel, ,

Path length : 0.5, 1.0, 1.5, 2.0, 3.0mm( )

( path length distance ring )

: ,Cuvette

Accessories - Transflectance method

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