- total ammonia nitrogen
- Рыбоводство: общий аммиачный азот (Суммарный азот аммиака и солей аммония.)
Универсальный англо-русский словарь. Академик.ру. 2011.
total ammonia nitrogen
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Total Kjeldahl Nitrogen — or TKN is the sum of organic nitrogen; ammonia (NH3) and ammonium (NH4+) in biological wastewater treatment.TKN is determined in the same manner as organic nitrogen, except that the ammonia is not driven off before the digestion step.It is named… … Wikipedia
Nitrogen cycle — Schematic representation of the flow of nitrogen through the environment. The importance of bacteria in the cycle is immediately recognized as being a key element in the cycle, providing different forms of nitrogen compounds assimilable by higher … Wikipedia
Ammonia — For other uses, see Ammonia (disambiguation). Ammonia … Wikipedia
nitrogen group element — ▪ chemical elements Introduction any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… … Universalium
Isotopes of nitrogen — Natural Nitrogen (N) consists of two stable isotopes, nitrogen 14, which makes up the vast majority of naturally occurring nitrogen, and nitrogen 15. Fourteen radioactive isotopes (radioisotopes) have also been found so far, with atomic masses… … Wikipedia
Oseltamivir total synthesis — concerns the total synthesis of the antiinfluenza drug oseltamivir marketed by Hoffmann La Roche under the trade name Tamiflu. Its commercial production starts from the biomolecule shikimic acid harvested from Chinese star anise with a limited… … Wikipedia
TAN — total adenine nucleotide; total ammonia nitrogen * * * tan tan vb, tanned; tan·ning vt to make (skin) tan esp. by exposure to the sun vi to get or become tanned tan n a brown color imparted to the skin by exposure to the sun or wind * * * (tan) 1 … Medical dictionary
TAN — • total adenine nucleotide; • total ammonia nitrogen … Dictionary of medical acronyms & abbreviations
Fertilizer — Tennessee Valley Authority: Results of Fertilizer demonstration 1942 … Wikipedia
environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium
Kjeldahl method — The Kjeldahl method in analytical chemistry is a method for the quantitative determination of nitrogen in chemical substances developed by Johan Kjeldahl during the 1800s. [Julius B. Cohen Practical Organic Chemistry 1910… … Wikipedia
