TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A period during which the concentration of smoke in the air exceeds a threshold set for a given location.  2, record 1, English, - smoke%20event

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Période où la concentration de fumée dans l'air dépasse un seuil défini pour un endroit donné.  2, record 1, French, - %C3%A9pisode%20de%20fum%C3%A9e

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Other methods can also be applied to determine the value of the concentration threshold such as referring to the performance of specific statistical models. More population-based studies in various regions using their specific air pollution threshold are recommended, and future studies are required to further explore the determination of the concentration threshold of air pollution.  3, record 2, English, - air%20pollution%20threshold

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

With certain chemical toxins, particularly those which are synthetic, it is reasonable to think that zero concentrations in the body or in the environment are desirable, even if not easily achievable. No level of these substances can be thought of as natural or normal, yet "safe" levels of such substances, (i.e., concentrations below which toxicity cannot be demonstrated) are frequently declared.  1, record 3, English, - safe%20level

Record number: 3, Textual support number: 2 CONT

The setting of air quality objectives requires an interpretation of what is considered a non-acceptable effect and of what is a "safe" pollutant level providing protection from these effects. The approach used in defining or promulgating a "safe" level is important because rarely is there sufficient scientific information about a pollutant to provide this distinction.  2, record 3, English, - safe%20level

Record number: 3, Textual support number: 1 OBS

Compare with "maximum permissible concentration" and "threshold limit value".  3, record 3, English, - safe%20level

Record number: 3, Textual support number: 1 PHR

minimum safe level  3, record 3, English, - safe%20level

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

Niveau atteint lorsque la «concentration maximale admissible» n'est pas dépassée. Voir aussi ce terme dans TERMIUM.  2, record 3, French, - niveau%20sans%20danger

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

The concentration of an odor in air that can be detected by a human being; i. e., in the case of sulfides emitted from a Kraft pulping process, an observer can smell these compounds at and above the odor threshold, a concentration of about one part in 10⁹ parts of air.  4, record 4, English, - odour%20threshold

Record number: 4, Textual support number: 2 DEF

(in water pollution) The point at which, after successive dilutions with odorless water, the odor of a water sample can just be detected. The threshold odor is expressed quantitatively by the number of times the sample is diluted with odorless water.  5, record 4, English, - odour%20threshold

Record number: 4, Textual support number: 1 OBS

See also "odour index".  6, record 4, English, - odour%20threshold

Record number: 4, Textual support number: 2 OBS

odour threshold: term standardized by ISO.  7, record 4, English, - odour%20threshold

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Point où une odeur devient perceptible.  6, record 4, French, - seuil%20olfactif

Record number: 4, Textual support number: 1 CONT

[...] les problèmes d'odeurs résultent de mélanges complexes de produits divers et l'on ne peut définir objectivement le véritable seuil olfactif. [...] la méthode ASTM D1391-57 utilise un groupe de 6 ou 8 expérimentateurs que l'on soumet à des dilutions croissantes (concentrations décroissantes) du polluant dans de l'air frais, jusqu'à ce que 50 % des membres déclarent ne plus rien déceler. La concentration correspondante est appelée «odeur minimum identifiable» (OMI ou MIO). Il existe une échelle d'intensité (Voir OII : «Odor intensity index»).  7, record 4, French, - seuil%20olfactif

Record number: 4, Textual support number: 1 OBS

seuil olfactif : terme normalisé par l'ISO.  8, record 4, French, - seuil%20olfactif

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Punto a partir del cual se hace perceptible un olor.  1, record 4, Spanish, - umbral%20de%20olor

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 OBS

EC; effect concentration: This [toxicological value] is generally followed by a number, which indicates the percentage of a population which experience the effect.  2, record 5, English, - effect%20concentration

Record number: 5, Textual support number: 2 OBS

Typical levels are EC 10, EC 25, EC 50, EC 75, EC 100. NOEC: No observable effect concentration; LOEC: Lowest observable effect concentration.  3, record 5, English, - effect%20concentration

Record number: 5, Textual support number: 1 CONT

Developing Hormosira banksii embryos, used as bioassays in toxicity studies, identified ammonium as a toxicant in secondary treated sewage effluent discharged at Boags Rocks, Victoria, Australia. Ammonium did not affect fertilization but had a significant effect on germination at 48 h and cell division at 72 h with most damage occurring in the first 48 h. Ammonium showed a similar effect as whole effluent (when expressed as mg N l^-1 ammonium), sampled in June, September and November 1997, on developing H. banksii embryos. This similarity is further confirmed with comparable EC₅₀ (concentration causing an effect on 50% of the population tested) and LOEC (lowest observable effect concentration) values. Mean EC₅₀ values for the ammonium bioassays were 3.19 mg N l^-1 for germination and 6.14 mg N l^-1 for cell division.  4, record 5, English, - effect%20concentration

Record number: 5, Textual support number: 1 PHR

Effect concentration low(ECL), median effect concentration(EC50), lowest observable effect concentration(LOEC), no-observed-effect concentration(NOEC), threshold effect concentration(TEC).  5, record 5, English, - effect%20concentration

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Concentration entraînant un effet à long terme.  2, record 5, French, - concentration%20effective

Record number: 5, Textual support number: 2 CONT

Concentration minimale produisant un effet.  3, record 5, French, - concentration%20effective

Record number: 5, Textual support number: 3 CONT

Évaluation du rapport dose (concentration)-réponse (effet). L'objectif est de déterminer la concentration en dessous de laquelle la substance ne devrait pas avoir d'effets indésirables sur la composante de l'environnement considérée. Cette concentration est dénommée concentration prévue sans effet (PNEC). Toutefois, il se peut que dans certains cas il ne soit pas possible d'établir une PNEC et il faut alors effectuer une estimation qualitative de la relation dose (concentration)-réponse (effet). Pour calculer la PNEC, on peut appliquer un facteur d'évaluation aux valeurs provenant des essais effectués sur les organismes, par exemple à la DL50 (dose létale médiane), à la CL50 (concentration létale médiane), à la CE50 (concentration effective médiane), à la CI50 (concentration provoquant cinquante pour cent d'inhibition d'un paramètre donné, par exemple la croissance), au NOEL(C) (dose (concentration) sans effet observé), au LOEL(C) (dose (concentration) entraînant l'effet observé le plus faible) ou d'autres méthodes appropriées.  4, record 5, French, - concentration%20effective

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Monitoring of water quality during capital and maintenance dredging with a cutterhead dredge in the Bécancour harbour between 1983 and 1984 showed that the critical suspended solids concentration threshold of 100 mg/L was rarely exceeded close to the raw water intake of the Gentilly nuclear power plant 1 km downstream.  1, record 6, English, - raw%20water%20intake

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Un suivi de la qualité de l'eau effectué lors des projets de dragage de capitalisation et d'entretien réalisés dans le port de Bécancour en 1983 et 1984 à l'aide d'une drague hydraulique à désagrégateur indique que le seuil critique de 100 mg/L de MES n'a été dépassé qu'en de rares occasions à la proximité de la prise d'eau brute de la centrale nucléaire de Gentilly, située à 1 km en aval.  1, record 6, French, - prise%20d%27eau%20brute

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Suggested or Regulated Limits. ... Air. Although workplace limits have been set (the 8-hour TLV is 1050 mg/m³), no environmental recommendations have been specifically made.  2, record 7, English, - workplace%20limit

Record number: 7, Textual support number: 1 OBS

Compare with "threshold limit value", "threshold limit value at place of work" and "maximum permissible concentration".  3, record 7, English, - workplace%20limit

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Limites maximales admissibles. [...] Qualité de l'air. - La teneur limite aux postes de travail, ou TLV [voir cette fiche], est fixée à 1050 mg/m³ (pour huit heures), mais aucune teneur limite en matière de pollution atmosphérique n'a été recommandée.  4, record 7, French, - concentration%20maximale%20admissible%20dans%20les%20ambiances%20professionnelles

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

[An exposure limit] established by the US OSHA (Occupational Safety and Health Administration). This may be expressed as a time-weighted average (TWA) limit or as a ceiling (C) exposure limit.  2, record 8, English, - permissible%20exposure%20limit

Record number: 8, Textual support number: 1 OBS

Compare with "TLV"("threshold limit concentration") and "MAC"("maximum allowable concentration").  3, record 8, English, - permissible%20exposure%20limit

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Limite d'exposition établie par l'OSHA [Occupational Safety and Health Administration] aux États-Unis.  3, record 8, French, - limite%20d%27exposition%20admissible

Record number: 8, Textual support number: 1 OBS

Nous pourrions peut-être aussi proposer «valeur PEL», sur le modèle de «valeur TLV» et de «valeur CMA» (voir ces fiches).  3, record 8, French, - limite%20d%27exposition%20admissible

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

The average airborne concentration of a biological or chemical agent to which a worker may be exposed in a work day or a work week.  3, record 9, English, - Threshold%20Limit%20Value%2DTime%20Weighted%20Average

Record number: 9, Textual support number: 1 CONT

Acceptable occupational exposure levels in the form of time-weighted average exposure values and short-term exposure limits designated by governments and other agencies have been listed ... under the title Recommended Exposure Limits [in the Envirotips collection].  4, record 9, English, - Threshold%20Limit%20Value%2DTime%20Weighted%20Average

Record number: 9, Textual support number: 1 OBS

Compare "threshold limit value", "time-weighted average", and "maximum permissible concentration".  5, record 9, English, - Threshold%20Limit%20Value%2DTime%20Weighted%20Average

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Les lettres TLV-TWA sont l'abréviation de Threshold Limit Value-Time Weighted Average. [Adaptation française : VLE-Moyenne pondérée dans le temps.] Cette valeur représente la concentration moyenne, pondérée en fonction du temps, pour une journée de travail normale, 5 jours par semaine, soit une semaine normale de 40 heures; c'est la concentration à laquelle presque tous les travailleurs peuvent être exposés, jour après jour, sans que leur santé en subisse d'effet adverse.  1, record 9, French, - VLE%2DMoyenne%20pond%C3%A9r%C3%A9e%20dans%20le%20temps

Record number: 9, Textual support number: 1 OBS

Dans le Règlement québécois ces valeurs sont reproduites sous l'appellation de concentration moyenne.  1, record 9, French, - VLE%2DMoyenne%20pond%C3%A9r%C3%A9e%20dans%20le%20temps

Record number: 9, Textual support number: 2 OBS

À la différence des valeurs plafonds (TLV-C) qui ne doivent en aucun cas être dépassées, les valeurs limites pondérées (TLV-TWA) peuvent être dépassées sur de courtes périodes (TLV-STEL).  1, record 9, French, - VLE%2DMoyenne%20pond%C3%A9r%C3%A9e%20dans%20le%20temps

Record number: 9, Textual support number: 2 CONT

Les concentrations maximales admissibles peuvent traduire deux conceptions différentes : - un niveau limite à ne jamais dépasser; -une valeur moyenne pondérée par le temps de travail, c'est-à-dire 8 heures, en admettant donc des pointes temporaires. Cependant, pour des substances très toxiques, on introduit une valeur plafond C (Ceiling Value).  2, record 9, French, - VLE%2DMoyenne%20pond%C3%A9r%C3%A9e%20dans%20le%20temps

Record number: 9, Textual support number: 3 OBS

VLE = valeur limite d'exposition.  4, record 9, French, - VLE%2DMoyenne%20pond%C3%A9r%C3%A9e%20dans%20le%20temps

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Concentración Límite, ponderada en el tiempo para una jornada normal de 8 horas y 40 horas semanales, a la cual la mayoría de los trabajadores pueden estar expuestos repetidamente, día tras día, sin sufrir efectos adversos. Se trata del valor Límite mas característico al que se hace referencia habitualmente cuando se cita el valor TLV.  1, record 9, Spanish, - valor%20l%C3%ADmite%20umbral%20%2D%20media%20ponderada%20en%20el%20tiempo

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

Pollutant Effects. ... Three levels of objectives have been defined: tolerable, acceptable, and desirable. ... nitrogen dioxide levels are now at or below acceptable levels in Canadian cities.  2, record 10, English, - allowable%20level

Record number: 10, Textual support number: 1 OBS

related concepts : MAC(maximum allowable concentration), TLV(threshold limit value) and PEL(permissible exposure limit).  3, record 10, English, - allowable%20level

Record number: 10, Textual support number: 1 PHR

acceptable background noise level, acceptable occupational exposure level.  3, record 10, English, - allowable%20level

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

(German Democratic Republic) maximum concentration allowed for a short-term exposure not exceeding 30 minutes.  1, record 11, English, - MAK%2DK

Record number: 11, Textual support number: 1 OBS

See also "maximum allowable concentration", "maximum worksite concentration", "permissible exposure limit" and "TLV-C"("Threshold Limit Value-Ceiling") in TERMIUM.  2, record 11, English, - MAK%2DK

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 DEF

Teneur maximale admissible sur les lieux de travail pour une période ne dépassant pas 30 minutes. Norme de la RDA.  1, record 11, French, - MAK%2DK

Record number: 11, Textual support number: 1 OBS

"MAK" est l'abréviation de l'expression allemande "maximale Arbeitsplatz Konzentration", qui signifie : concentration maximale en milieu de travail.  2, record 11, French, - MAK%2DK

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

(German Democratic Republic) maximum average concentration allowed for a working shift of 8 hours and 45 minutes per day.  1, record 12, English, - MAK%2DD

Record number: 12, Textual support number: 1 OBS

See also "maximum allowable concentration", "maximum worksite concentration", "permissible exposure limit" and "TLV"("Threshold Limit Value") in TERMIUM.  2, record 12, English, - MAK%2DD

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 DEF

Teneur maximale moyenne admissible sur les lieux de travail pour une exposition de 8 heures par jour et une semaine de 45 heures. Norme de la RDA.  1, record 12, French, - MAK%2DD

Record number: 12, Textual support number: 1 OBS

"MAK" signifie, en allemand, "maximale Arbeitsplatz Konzentration", soit : concentration maximale en milieu de travail.  2, record 12, French, - MAK%2DD

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

"MAK": a maximum worksite concentration. [Usually for] 8 hours per day, 45 hours per week [MAK-D].  3, record 13, English, - maximum%20worksite%20concentration

Record number: 13, Textual support number: 1 OBS

This exposure limit belongs to the Federal Republic of Germany. It is a German abbreviation, meaning "Maximale Arbeitsplatz Konzentration". It doesn’t have an English equivalent. The term "maximum worksite concentration" is simply an explanatory expression.  4, record 13, English, - maximum%20worksite%20concentration

Record number: 13, Textual support number: 2 OBS

See also "TLV"("Threshold Limit Value"), "PEL"("permissible exposure limit"), "occupational threshold limit value", "workplace standard" and "MAC"("maximum allowable concentration") in Termium.  4, record 13, English, - maximum%20worksite%20concentration

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

«MAK» (abréviation allemande : «Maximale Arbeitsplatz Konzentration») : Teneur maximale moyenne admissible sur les lieux de travail [en un polluant. On la calcule habituellement] pour une exposition de 8 heures par jour et une semaine de 45 heures [MAK-D]. Norme de la RFA.  3, record 13, French, - concentration%20maximale%20en%20milieu%20de%20travail

Record number: 13, Textual support number: 1 OBS

Cette abréviation ne doit pas être traduite en français. L'équivalent français, qui en constitue la traduction, n'est donné qu'à titre explicatif. Voir aussi «TLV» («Threshold Limit Value»), «PEL» («permissible exposure limit») et «MAC» («maximum allowable concentration») dans Termium.  4, record 13, French, - concentration%20maximale%20en%20milieu%20de%20travail

Record number: 13, Textual support number: 2 OBS

On trouve aussi l'expression «concentration maximale admissible» (CMA) dans les sources suivantes : Lexik'elp, Sécurité du travail et contrôle de la pollution, Lexique E-F-Es-D, Elp éditions, 1975. Aussi : Dictionnaire de chimie DUVAL, Doc. technique, 1978. Cette expression est correcte mais ne correspond pas exactement à la présente notion. Voir l'autre fiche pour ce terme dans TERMIUM. Quant à la traduction française donnée dans le Manuel du caoutchouc de la societé BAYER, «valeur limite de concentration», elle est inexacte.  5, record 13, French, - concentration%20maximale%20en%20milieu%20de%20travail

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

The highest tensile strain at which a rubber can be exposed continuously to an ozone-containing environment without ozone cracks developing on it.  1, record 14, English, - threshold%20strain

Record number: 14, Textual support number: 1 OBS

NOTE-The value of the threshold strain depends on the composition of the rubber, ozone concentration and the exposure time.  1, record 14, English, - threshold%20strain

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 DEF

La déformation en traction la plus importante à laquelle un caoutchouc peut être exposé en continu dans un environnement renfermant de l'ozone sans qu'il y ait formation de craquelures dues à l'ozone.  1, record 14, French, - seuil%20de%20d%C3%A9formation

Record number: 14, Textual support number: 1 OBS

NOTE - La valeur du seuil de déformation dépend de la composition du caoutchouc, de la concentration en ozone et de la durée de l'exposition.  1, record 14, French, - seuil%20de%20d%C3%A9formation

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

Duration of drug action. It is usually assumed that a drug is effective when its concentration in the central compartment is greater than a minimal, threshold level(C/effective). C/effective may not be identical to C/therapeutic which is the concentration to achieve a specific therapeutic effect. Consequently, drug action is maintained as long as this condition of exceeding the minimum effective concentration is fulfilled.  1, record 15, English, - duration%20of%20drug%20action

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 CONT

Le chlorpropamide qui a une durée d'action de 24 à 60 heures n'est pas recommandé chez les personnes âgées.  1, record 15, French, - dur%C3%A9e%20d%27action

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 OBS

"TLV"("threshold limit value") is the concentration in air of a material to which most workers can be exposed daily without adverse effect.  1, record 16, English, - portable%20TLV%20instrument

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 OBS

Appareil de mesure de l'air ambiant, avec avertisseur réglé en fonction de la TLV.  1, record 16, French, - d%C3%A9tecteur%20portatif%20mod%C3%A8le%20TLV

Record number: 16, Textual support number: 2 OBS

Voir catalogue 1979 de Safety Supply, p. 134 et suivantes. (code : SSCAC-E).  1, record 16, French, - d%C3%A9tecteur%20portatif%20mod%C3%A8le%20TLV

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 OBS

NO₂.  2, record 17, English, - NO2%20injury%20threshold

Record number: 17, Textual support number: 2 OBS

... nitrogen dioxide (NO2) ....  1, record 17, English, - NO2%20injury%20threshold

Record number: 17, Textual support number: 1 CONT

Studies on combined exposures to NO2 and SO2 have found that the NO2 injury threshold can be significantly reduced in the presence of SO2. Responses to mixtures are related to concentration ratios, sequence of exposure and other variables.  1, record 17, English, - NO2%20injury%20threshold

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 OBS

NO₂.  2, record 17, French, - seuil%20de%20blessure%20du%20NO2

Record number: 17, Textual support number: 2 OBS

(...) dioxyde d'azote (NO2) (...)  1, record 17, French, - seuil%20de%20blessure%20du%20NO2

Record 17,  Textual support,  Spanish