Pre-column electrochemical derivation method for one-time determination of total amount of malachite green and latent malachite green in aquatic products
A technology of recessive malachite green and malachite green, which is applied in the direction of measuring devices, scientific instruments, instruments, etc., can solve the problem of uncontrollable amount of recessive malachite green, low accuracy of recessive malachite green, lead dioxide The problem of column unevenness and other problems can be shortened, the sample pretreatment time is shortened, the sample pretreatment is simple, and the use of reagent consumables is reduced.
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[0054] Embodiment 1, the one-time determination method of the total amount of malachite green and recessive malachite green in the aquatic products by electrochemical derivation before the column
[0055] The one-time determination method of pre-column electrochemical derivation of malachite green and recessive malachite green in aquatic products, the steps are as follows:
[0056] 1. Reagents
[0057] Standard substances: malachite green (content 98.0%); and stable malachite green (content 98.0%);
[0058] Acetonitrile (chromatographically pure, content greater than 99.9%);
[0059] Glacial acetic acid (chromatographically pure, content greater than 98%);
[0060] Anhydrous ammonium acetate (chromatographically pure, content greater than 99.9%);
[0061] Dichloromethane (chromatographically pure, content greater than 99%);
[0062] Acidic alumina solid adsorbent (particle size 50-200μm);
[0063] Sodium chloride (analytically pure, content greater than 99.8%).
[0064] ...
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