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PARTS PER MILLION

Specialty Definition: PARTS PER MILLION

Domain	Definition
Energy	Parts (molecules) of a substance contained in a million parts of another substance (or water). (ppm). (references)
Hydrologic	The number of "parts" by weight of a substance per million parts of water. This unit is commonly used to represent pollutant concentrations. (references)
Weather	(ppm) Number of parts of a chemical found in one million parts of a particular gas, liquid, or solid. See concentration. (references)
Source: compiled by the editor from various references; see credits.

Specialty Definition: Parts per million

(From Wikipedia, the free Encyclopedia)

Parts per million (ppm) is a measure of concentration that is used where low levels of concentration are significant. The ppm value is equivalent to the absolute fractional amount multiplied by one million (10⁶).

Illustrations of one part per million

The metric system is the most convenient way to express this since metric units go by steps of ten, hundred and thousand. For example, a milligram is a thousandth of a gram and a gram is a thousandth of a kilogram. Thus, a milligram is a thousandth of a thousandth, or a millionth of a kilogram. A milligram is one part per million of a kilogram thus, one part per million (ppm) is the same as one milligram per kilogram. Just as part per million is abbreviated as ppm, a milligram per kilogram has its own abbreviation -- mg/kg. Using our abbreviations, one ppm equals one mg/kg.

one milligram in a kg is 1 ppm (by mass).
one gram in a metric tonne.
1 liter (l) of pure water at 4°C and one standard atmosphere pressure weighs exactly 1 kg, so 1 mg/l is 1 ppm.
one millilitre in a cubic metre (or kilolitre).
In a percentage, 0.1% are 1000 ppm or 1% are 10,000 ppm.

Use

Examples of situations where parts per million are an appropriate measure include:

relative abundances of rare elements in the earth's crust
concentrations of pollutants in the environment

Another parts per units

Similar, even smaller measures are:

Parts per billion (ppb).
Parts per trillion (ppt).

Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Parts per million."

Crosswords: PARTS PER MILLION

English words defined with "PARTS PER MILLION": abundance. (references)

Specialty definitions using "PARTS PER MILLION": dissolved oxygen, drenaje por expansión del gas disuelto ♦ PPM ♦ Threshold Limit Values, total acidity. (references)

Non-Fiction Usage: PARTS PER MILLION

Subject	Topic	Quote
Economic History	Bahrain	The primary aim of LSPD project is to move from producing an average diesel pool of 7,500 parts per million (PPM) sulfur to 50-PPM sulfur, the level now required in most industrialized countries. (references)
Trade	Egypt	All preservatives must be identified along with the allowed concentration as a percentage in parts per million calculated on the acid base. (references)
Source: compiled by the editor from ICON Group International, Inc.; see credits.

Modern Translation: PARTS PER MILLION

Language		Translations for "PARTS PER MILLION"; alternative meanings/domain in parentheses.
Danish		milliontedel (millionth, part per million, ppm=VE2), del pr.million (millionth, part per million, ppm=VE2). (various references)

Dutch		ppm (millionth, pages per minutes, part per million, periodical pulse metering, ppm=VE2, pulse-position modulation), miljoenste (millionth, part per million, ppm=VE2), delen per miljoen (millionth, part per million, ppm=VE2), deel per miljoen (millionth, part per million, ppm=VE2). (various references)

Finnish		miljoonasosa (millionth, part per million, ppm=VE2). (various references)

French		ppm, partie par million, millionième (part per million). (various references)

German		Teile pro Million Teile (millionth, part per million, ppm=VE2), Millionstel (micros, millionth, millth). (various references)

Italian		ppm (pulse-position modulation), parti per milione (millionth, part per million, ppm=VE2), parte per milione, milionesimo (millionth). (various references)

Pig Latin		artspay erpay illionmay

Portuguese		partes por milhão (millionth, part per million, ppm=VE2), milionésimo (millionth, part per million, ppm=VE2). (various references)

Spanish		ppm (millionth, part per million, ppm=VE2), partes por millón (millionth, part per million, ppm=VE2), parte por millón (millionth, part per million, ppm=VE2), millonésimo (millionth), millonésimas (millionth, part per million, ppm=VE2). (various references)
Source: compiled by the editor from various translation references.

Anagrams: PARTS PER MILLION

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-e-i-i-l-l-m-n-o-p-p-r-r-s-t"
	-3 letters: perspiration, postimperial, trampoliners.
	-4 letters: eliminators, leptospiral, normalities, orientalism, patrimonies, peristomial, propellants, respiration, trampoliner, trampolines.
	-5 letters: eliminator, epilations, imperators, impersonal, implanters, impresario, imprinters, inapposite, inspirator, ironmaster, literalism, molalities, molarities, moralities, palimonies, papillotes, patrollers, piperonals, polarities, pollinates, pretorians, prolamines, propellant, proseminar, protamines, reappoints, reimplants, reptilians, ritornelli, septillion, trampoline, trinomials.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.

INDEX

1. Crosswords
2. Quotations: Non-fiction
3. Translations: Modern
4. Anagrams

5. Bibliography

Copyright © Philip M. Parker, INSEAD. Terms of Use.