Automatic analysis method of chlorate in water sample

Automatic analysis method of chlorate in water sample

  • CN 101,975,777 A
  • Filed: 10/28/2010
  • Published: 02/16/2011
  • Est. Priority Date: 10/28/2010
  • Status: Active Application
First Claim
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1. the automatic analysis method of chlorate in the water sample, it is characterized in that using the analytical instrument that comprises sample flow path, colour developing liquid stream, sampling valve (2), injection annulus (3), analyzes stream, optical flow cell (6), fluorescence detector (5) and computer processing system (4), step is as follows:

  • (1) analytical instrument is arranged on the sample introduction state, make colour developing liquid (R) enter the analysis stream through colour developing liquid stream, make promotion liquid (C) enter the analysis stream through sampling valve, in analyzing stream, colour developing liquid (R) mixes the formation mixed liquor mutually and is heated to 60 ℃



    80 ℃

    with promotion liquid (C), described heated mixed liquor enters optical flow cell, through fluorescence detector signal is transferred to computer processing system and handles, and obtains baseline;

    (2) make sample (S) through sample flow path, sampling valve enters injection annulus and injection annulus is full of, then analytical instrument is converted to analysis state, make the sample (S) in the injection annulus under the promotion that promotes liquid (C), enter the analysis stream, make colour developing liquid (R) enter the analysis stream through colour developing liquid stream, in analyzing stream, sample (S) is mixing and is being heated to 60 ℃



    80 ℃

    with colour developing liquid (R), color fading reaction takes place in this process, formed mixed liquor enters optical flow cell, through fluorescence detector signal is transferred to computer processing system and handles, obtain the sample spectrogram;

    (3) use the known standard specimen of a series of perchlorate concentrations to replace sample (S), repeat above-mentioned steps (1) and (2), obtain a series of standard specimen spectrograms, be horizontal ordinate, be ordinate drawing curve with the peak height of standard specimen spectrogram with the concentration of standard specimen;

    (4) relatively, the regression equation calculation by described working curve goes out the chlorate content in the sample with the sample spectrogram drawn and standard specimen spectrogram;

    Described colour developing liquid (R) is methyl orange-aqueous hydrochloric acid solution, and promoting liquid (C) is deionized water.

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