trace elements

См. также в других словарях:

• trace elements — mikroelementai statusas T sritis ekologija ir aplinkotyra apibrėžtis Cheminiai elementai, kurių gamtoje (uolienose, dirvožemyje, vandenyje, organizmuose) yra labai nedaug, bet gyviesiems organizmams jie yra būtini (yra >20 elementų: boras,… …   Ekologijos terminų aiškinamasis žodynas

• trace elements — mikroelementai statusas T sritis chemija apibrėžtis Cheminiai elementai, kurių gyviesiems organizmams reikia labai mažai (B, Zn, Fe, Co, Mn, Mo, Cu). atitikmenys: angl. microelements; micronutrient; trace elements rus. микроэлементы …   Chemijos terminų aiškinamasis žodynas

• trace elements — mikroelementai statusas T sritis chemija apibrėžtis Kokios nors sistemos cheminiai elementai, kurių joje yra< 0,001%. atitikmenys: angl. microelements; trace elements rus. микроэлементы …   Chemijos terminų aiškinamasis žodynas

• trace elements essential — mikroelementai statusas T sritis ekologija ir aplinkotyra apibrėžtis Cheminiai elementai, kurių gamtoje (uolienose, dirvožemyje, vandenyje, organizmuose) yra labai nedaug, bet gyviesiems organizmams jie yra būtini (yra >20 elementų: boras,… …   Ekologijos terminų aiškinamasis žodynas

• trace elements — chemical elements that are distributed throughout the tissues in very small amounts and are essential in nutrition, such as cobalt, copper, magnesium, manganese, selenium, and zinc; for optimal bioavailability they must be in a balanced mixture,… …   Medical dictionary

• trace elements —   See micronutrient …   Expanded glossary of Cycad terms

• Trace metal — Trace metals are metals in extremely small quantities, almost at the molecular level, that reside in or are present in animal and plant cells and tissue. They are a necessary part of good nutrition, although they can be toxic if ingested excess… …   Wikipedia

• trace element — trace elements 1) N COUNT A trace element is a chemical element such as iron or zinc that occurs in very small amounts in living things and is necessary for normal growth and development. 2) N COUNT A trace element is a very small amount of a… …   English dictionary

• trace element — n a chemical element present in minute quantities esp one used by organisms and held essential to their physiology compare MICRONUTRIENT (2) * * * an element that is required in minute concentrations for normal growth and development. Trace… …   Medical dictionary

• Trace element — In analytical chemistry, a trace element is an element in a sample that has an average concentration of less than 100 parts per million measured in atomic count, or less than 100 micrograms per gram. In biochemistry, a trace element is a chemical …   Wikipedia

• trace — {{Roman}}I.{{/Roman}} noun 1 mark/sign that shows sb/sth happened/existed ADJECTIVE ▪ archaeological, historical ▪ indelible, permanent ▪ memory (technical) VERB + TRACE …   Collocations dictionary