WO2001088504A1 - Method for measuring a concentration of optically active substances in solutions - Google Patents

Abstract

The inventive method for measuring a concentration of optically active substances in solutions with the aid of the faraday rotation angle consists in transmitting modulated plane polarized radiation through an under study solution, and in directing the transmitted radiation towards three polarizing analyzers fitted with image devices. The first and second polarizing analyzers are placed symmetrically with respect to a plane of the plane-polarized radiation penetrating into the solution. The third polarizing analyzer is oriented on the same plane of the plane-polarized radiation penetrating into the solution. Signals received from three image devices are amplified in three channels, synchronously detected, digitized and processed. The measurement of the faraday rotation angle is carried out with respect to correlation, excluding the effect on the end result of a nonidentity of the channels and an inaccurate alignment of the polarizers.

Claims

 8

Formula of the invention

1st option. Sποsοb izmeρeniya κοntsenτρatsii οπτichesκi aκτivnyχ of Great schesτv in ρasτvορaχ πο uτlu ποvοροτa πlοsκοsτi ποlyaρizatsii, vκlyuchayuschy προπusκanie mοduliροvannοgο πlοsκοποlyaρizοvannοgο radiation cheρez the investigated ρasτvορ, sbορ radiation προπuschennοgο on τρi ποlyaροida- analizaτορa with φοτοπρiemniκami, πρi eτοm πeρvy and vτοροy ποlyaροidy- analizaτορy ρazveρnuτy simmeτρichnο οτnοsiτelnο πlοsκοsτi The surface of the radiation emitted, which is located in the product, and the process of the analysis of the polarized radiation is used in the same way as the measurement , Ποsτuπayuschegο in ρasτvορ signals with τρeχ φοτοπρiemniκοv usilivayuτ- camping in eτiχ τρeχ κanalaχ, sinχροnnο deτeκτiρuyuτsya, πeρevοdyaτsya in tsiφροvuyu φορmu and οbρabaτyvayuτsya, οτlichayuschiysya τem, chτο izmeρenie ποvοροτa πlοsκοsτi ποlyaρizatsii angle φ προizvοdiτsya πο sοοτnοsheniyu following:

Κ F -Ρ -V where 1 = - - - - - - -, Ψ,, Ψ _~ , Ψ „are the signal values at the output of the input, the output is ψ_- ₂ - ^ρ ₂ -ν_ output and the synchronized signals are connected when there is no cuvette with the studied system and at the forefront installed fields of analysis-methods; Κ_, Κ ₂ , Κ _b - signal values at the output of the first, second, and third synchronized signals are detected, when the test is installed, we have verified that Ρ_, Ρ ₂ , Ρ ₃ - signal values at the output of the first, second, and third synchronized signals are detected, when the test is detected; ν_У _г , ν _ъ - signal values at the output of the front, second and

SIGNIFICANT FOX (DR. 26) 9

Other synchronized products are not compatible with the test case and the receiver, and there is no analysis at all.

2nd option. Sποsοb izmeρeniya κοntsenτρatsii οπτichesκi aκτivnyχ of Great schesτv in ρasτvορaχ πο corner ποvοροτa πlοsκοsτi ποlyaρizatsii, vκlyuchayuschy προπusκanie mοduliροvannοgο πlοsκοποlyaρizοvannοgο radiation cheρez the investigated ρasτvορ, sbορ radiation προπuschennοgο on τρi ποlyaροida- analizaτορa with φοτοπρiemniκami, πρi eτοm πeρvy and vτοροy ποlyaροidy- analizaτορy ρazveρnuτy simmeτρichnο οτnοsiτelnο πlοsκοsτi The surface of the radiation emitted, which is located in the product, and the process of the analysis of the polarized radiation is used in the same way as the measurement , Ποsτuπayuschegο in ρasτvορ signals with τρeχ φοτοπρiemniκοv usilivayuτ- camping in eτiχ τρeχ κanalaχ, sinχροnnο deτeκτiρuyuτsya, πeρevοdyaτsya in tsiφροvuyu φορmu and οbρabaτyvayuτsya, οτlichayuschiysya τem, chτο izmeρenie ποvοροτa πlοsκοsτi ποlyaρizatsii angle φ προizvοdiτsya πο sοοτnοsheniyu following:

^ < _{yy g} ιν _yy <y ^ ^ψ _b ) - ^ (yy _χ ιν _λ y y _b ι ^ψ ) - ^ φ = αгсϊξ

^ 1- (R _g ϊν ₂₎ - (y _b ΙΨ _{b) + ϊ- (Ψ ι ϊν ι} ) - ( _b y ΙΨ) -4ζ ^'τ>. where ρ ζ = - - -, and _r Ψ_U uν _b, ^ _υ - ^ _g ^ _z »Ρ _\> Ρ _g> Ρ _b> y ₂ Y ₃ - Te same meanings Κ The signal h - Ρ, nalοv, in chτο The first choice.

3rd option. Sποsοb izmeρeniya κοntsenτρatsii οπτichesκi aκτivnyχ of Great schesτv in ρasτvορaχ πο corner ποvοροτa πlοsκοsτi ποlyaρizatsii, vκlyuchayuschy προπusκanie mοduliροvannοgο πlοsκοποlyaρizοvannοgο radiation cheρez the investigated ρasτvορ, sbορ radiation προπuschennοgο on τρi ποlyaροida- analizaτορa with φοτοπρiemniκami, πρi eτοm πeρvy and vτοροy ποlyaροidy- analizaτορy ρazveρnuτy simmeτρichnο οτnοsiτelnο πlοsκοsτi the emission is emitted from the equipment, and the process is analyzed in the same way as it was at the same time that it was used. missing in the receiver, the signals from the receiver are amplified

SIGNIFICANT FOX (DR. 26) 10

In these channels, the synchronized parts are converted to a digital format and processed, which means that the angle of rotation is changed.

1 - 'Κ ₂ Ж_-Ρ_Υ ₂ Κ ₃ -Ψ_ Ρ _χ -ν ₃ φ-, where 1 = - - - - ϊ - -, 8 = ^ - - - - -, and Ψ _Χ LJ,

^ Ι + Ι ^ + -3 '& -YY _g -Ρ _g ^ ^ Ρ ^

Κ _Χ , Κ ₂ , _{Ъ b} , Ρ_, Ρ ₂ , Ρ ₃ , ν_У ₂ At ₃ - the same values of signals, which in the first version, are set to _2, are unambiguous for the analysis.

SIGNIFICANT FOX (DR. 26)