humic acids

humic acids
humuso rūgštys statusas T sritis chemija apibrėžtis Rūgštinėje terpėje netirpios, o šarminėje – tirpios humuso medžiagos. atitikmenys: angl. humic acids rus. гуминовые кислоты

Chemijos terminų aiškinamasis žodynas – 2-asis patais. ir papild. leid. – Vilnius: Mokslo ir enciklopedijų leidybos institutas. . 2003.

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  • humic acids — humuso rūgštys statusas T sritis ekologija ir aplinkotyra apibrėžtis Stambiamolekuliai ciklinės struktūros junginiai, turintys azoto. Jų yra durpėse, rusvosiose anglyse, dirvožemyje. Dažniausiai sudaro 60–70 % dirvožemio organinės anglies kiekio …   Ekologijos terminų aiškinamasis žodynas

  • Humic acid — is one of the major components of humic substances [http://www.ihss.gatech.edu/whatarehs.html] which are dark brown and major constituents of soil organic matter humus that contributes to soil chemical and physical quality and are also precursors …   Wikipedia

  • humic shale — noun shale that is rich in humic acids • Hypernyms: ↑shale, ↑humate …   Useful english dictionary

  • humic acid — n. a brown powder consisting of organic acids, derived from humus …   English World dictionary

  • humic acid — noun a dark brown humic substance that is soluble in water only at pH values greater than 2 the half life of humic acid is measured in centuries • Hypernyms: ↑humic substance * * * noun : any of various organic acids that are insoluble in alcohol …   Useful english dictionary

  • humic acid — Humin Hu min, n. [L. humus the earth, ground.] (Chem.) A bitter, brownish yellow, amorphous substance, extracted from vegetable mold, and also produced by the action of acids on certain sugars and carbohydrates; called also {humic acid}, {ulmin} …   The Collaborative International Dictionary of English

  • humic acid — noun Date: 1843 any of various organic acids obtained from humus …   New Collegiate Dictionary

  • humic acid — noun a complex mixture of organic acids produced by the decomposition of vegetable matter …   Wiktionary

  • humic acid — hu·mic acid hyü mik , yü n any of various organic acids obtained from humus …   Medical dictionary

  • Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …   Wikipedia

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