Xov xwm
0102 ib0304 ib05
Kev qhia thiab txiaj ntsig txog Humic Acid
2024-03-29 13:35:37 dr n
Humus yog xim av-xim av, amorphous, polydispersed organic tshuaj uas muaj qhov hnyav molecular uas nyuaj degraded. Nws yog tsim los ntawm lub cev, tshuaj, thiab microbial decomposition thiab transformation ntawm tsiaj thiab nroj tsuag. Yog li ntawd, nws muaj nyob rau hauv ntau qhov av, peat, lignite, dej thiab sediment. Cov khoom xyaw tseem ceeb hauv humus yog humic acid thiab fulvic acid, thiab muaj me me ntawm humin. Txij li thaum humic acid yog soluble nyob rau hauv alkali tab sis tsis nyob rau hauv acid, fulvic acid yog soluble nyob rau hauv acid thiab alkali, thiab humus yog insoluble nyob rau hauv acid thiab alkali, thiab HM yog insoluble nyob rau hauv acid thiab alkali. , yog li lawv tuaj yeem sib cais thiab ua kom huv mus rau qee qhov los ntawm kev solubility. Humic acid yog macromolecular organic acid uas muaj ntxhiab thiab ntau yam ua haujlwm ua haujlwm. Nws muaj reactivity siab thiab yog dav siv nyob rau hauv kev ua liaj ua teb, tshuaj thiab Environmental tiv thaiv thiab lwm yam teb.
Humic acid muaj cov qauv sib txawv thiab sib txawv. Vim nws cov qauv sib txawv, nws muaj ntau yam haujlwm thiab cov teebmeem. Ua ntej tshaj plaws, cov qauv ntawm humic acid txiav txim siab tias nws muaj hydrophilicity zoo. Muaj ntau ntau ntawm hydroxyl, carboxyl thiab lwm pab pawg ua haujlwm hauv humic acid molecule. , cia nws mus rau hydrogen daim ntawv cog lus nrog dej molecules los tsim ib qho kev daws teeb meem. Qhov no hydrophilicity enables humic acid los txhawb lub agglomeration thiab aggregation ntawm av hais, ua rau kom cov qauv stability ntawm cov av, thiab txhim kho cov dej permeability thiab dej tuav ntawm cov av.
Thib ob, humic acid muaj peev xwm ua kom zoo. Cov pab pawg ua haujlwm xws li carboxyl thiab phenolic hydroxyl pawg hauv humic acid molecules tuaj yeem tsim cov complexes nrog hlau ions. Qhov complexation no tuaj yeem hloov qhov kev ua si thiab solubility ntawm cov hlau ions hauv cov av thiab txo cov dispersion ntawm cov hlau. Toxicity. Nyob rau tib lub sijhawm, kev sib xyaw ntawm humic acid kuj tuaj yeem txhawb kev tso tawm thiab muab cov as-ham, txhim kho av fertility, thiab txhawb kev loj hlob thiab kev loj hlob ntawm cov nroj tsuag. Tsis tas li ntawd, humic acid kuj muaj peev xwm pauv ion zoo. Qhov saum npoo ntawm humic acid molecules nqa ntau tus nqi tsis zoo tuaj yeem ua rau ion pauv hloov pauv nrog cations. Qhov kev sib pauv ion no tuaj yeem ua rau kom muaj peev xwm sib pauv ion ntawm cov av thiab txhim kho fertility thiab nutrient retention peev xwm ntawm cov av. Humic acid kuj tuaj yeem nqus thiab desorb cov zaub mov cog thiab tswj cov concentration ntawm cov as-ham hauv av. Kev ua tau zoo thiab muaj. Thaum kawg, humic acid kuj muaj peev xwm adsorption zoo. Vim cov nplua nuj aromatic rings thiab ib tug loj tus naj npawb ntawm functional pawg nyob rau hauv nws cov qauv molecular, humic acid tuaj yeem adsorb organic thiab inorganic tshuaj. Lub adsorption ntawm humic acid tuaj yeem txo cov av Neutralize lub toxicity ntawm cov teeb meem tshuaj thiab txo cov tsiv teb tsaws thiab diffusion ntawm cov pa phem. Nyob rau tib lub sijhawm, humic acid tuaj yeem nqus tau thiab ruaj khov cov as-ham thiab dej hauv av, txo cov as-ham poob thiab dej evaporation.
Hauv cov ntsiab lus, cov yam ntxwv ntawm humic acids zoo sib xws rau lawv txoj haujlwm. Cov qauv ntawm humic acids txiav txim siab tias lawv muaj qhov zoo hydrophilicity, complexing peev xwm, ion pauv peev xwm thiab adsorption muaj peev xwm. Cov haujlwm no ua rau humic acids muaj txiaj ntsig zoo hauv av thiab dej. Nws ua lub luag haujlwm tseem ceeb hauv ecological thiab ib puag ncig thiab tseem ceeb heev rau kev tswj hwm av kev noj qab haus huv thiab kev sib npaug ntawm ecological.
