trace organic compound

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• trace organic compound — Экология: следовое органическое соединение …   Универсальный англо-русский словарь

• Organic molecular tracers — Organic molecular tracers, also referred to as organic molecular markers, are compounds or compound classes of interest in the field of air quality because they can help identify particulate emission sources, as they are relatively unique to… …   Wikipedia

• Trace gas — The term Trace gas refers to a gas or gases which make up less than 1% by volume of the earth s atmosphere, and therefore includes all gases except nitrogen (78.1%) and oxygen (20.9%). The most abundant trace gas at 0.934% is argon, which is… …   Wikipedia



• chemical compound — Introduction  any substance composed of identical molecules consisting of atoms (atom) of two or more chemical elements (chemical element).       All the matter in the universe is composed of the atoms of more than 100 different chemical elements …   Universalium

• organosulfur compound — ▪ chemical compound Introduction also spelled  organosulphur compound , also called  organic sulfur compound   a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …   Universalium

• Total organic carbon — (TOC) is the amount of carbon bound in an organic compound and is often used as a non specific indicator of water quality or cleanliness of pharmaceutical manufacturing equipment. A typical analysis for TOC measures both the total carbon present… …   Wikipedia

• следовое органическое соединение — Ecology: trace organic compound …   Универсальный русско-английский словарь

• Landfill gas monitoring — is the process by which gases that are released from landfill are electronically monitored.Landfill gas production results from chemical reactions and microbes acting upon the waste as the putrescible materials begins break down. [Burdekin, O.… …   Wikipedia

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium