Analysis of Adsorbable Organic Halogens Compounds

Introduction "AOX" is an abbreviation for water-soluble "adsorbable organic halogen" total parameters, "A" means adsorption, "O" means organic chlorine, "X" means halogen, chlorine, bromine, iodine. After AOX was introduced in 1976, this parameter was correctly applied to "real" AOX ingredients (drip and its metabolites, polychlorinated biphenyl etc.), but OX compounds, mainly due to non adsorptive adsorption of plants Also misused. Polymeric organic halogens are even inorganic compounds that are neither organic nor adsorbable.

Many synthetic organic compounds, such as plastic polymers, contain halogen atoms as well as some natural ones, which are known as halogenated compounds or organic halides. Chlorine is the most abundant halogen in sea water, and chlorine is required for human beings in relatively large amounts (such as chloride ions). For example, chloride ions play an important role in brain function by mediating the action of the inhibitory transmitter GABA, and are also used by the body to produce stomach acid. To produce thyroid hormones such as thyroxine, trace amounts of iodine are required. Organic halogens are also synthesized by nucleophilic substitution reaction

Chlorine belongs to Group 17 of the Periodic Table of the Elements, also known as halogen, not found in nature - only as a compound. The most common of these are salts, or sodium chloride, potassium compounds (or potassium chloride) and carnallite (magnesium chloride, potassium chloride hexahydrate). It is estimated that there are approximately 2,000 organic chlorine compounds. Chlorine plays an important role in organic synthetic chemistry and participates in the three most common reaction mechanisms. In the first photochemical substitution reaction, chlorine is reacted with an alkane by replacing one of the carbon-bonded hydrogen atoms forming a chlorinated alkane. Start this free radical reaction by splitting diatomic chlorine into two groups using sunlight or ultraviolet radiation

Interhalogen compounds are in the form of X - Y - n where X and Y are halogens and n is 1, 3, 5 or 7. Halogen compounds contain up to two different halogens. Larger halogens such as ClF 3 can be prepared by reaction of pure halogen with a small halogen such as ClF 3. All halogen gaps except IF7 can be generated by directly combining pure halogen under various conditions. Halogen is generally more reactive than all diatomic halogen molecules except for F 2, as the interhalogen bond is weak. However, the chemical nature of the interhalogen compound is still about the same as that of the diatomic halogen. Many halogens are composed of one or more fluorine atoms bonded to heavier halogen. Chlorine can bind up to 3 fluorine atoms, bromine can bind up to 5 fluorine atoms, and iodine can bind up to 7 fluorine atoms. Most interhalogen compounds are covalent gases