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Mortality Acute LC50 0,00062 mg/L Fish

Romanian translation: concentraţia letală pentru 50% din populaţia expusă (peşti)

15:15 Feb 27, 2010
English to Romanian translations [PRO]
Tech/Engineering - Science (general) / fisa tehnica de securitate
English term or phrase: Mortality Acute LC50 0,00062 mg/L Fish
Din aceiasi fisa tehnica, daca LD inseamna doza letala, ce inseamna LC,
Michelle1977
Romania
Local time: 20:14
Romanian translation:concentraţia letală pentru 50% din populaţia expusă (peşti)
Explanation:
Concentraţia unei substanţe chimice care ucide 50% din populaţia de probă.

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Note added at 1 hr (2010-02-27 16:57:18 GMT)
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toxicitatea acută acvatică LC50
Selected response from:

Adriana Sandru
Local time: 19:14
Grading comment
Selected automatically based on peer agreement.
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +3concentraţia letală pentru 50% din populaţia expusă (peşti)
Adriana Sandru
Summary of reference entries provided
What does LC50 mean?
Sandra & Kenneth Grossman

  

Answers


6 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +3
mortality acute lc50 0,00062 mg/l fish
concentraţia letală pentru 50% din populaţia expusă (peşti)


Explanation:
Concentraţia unei substanţe chimice care ucide 50% din populaţia de probă.

--------------------------------------------------
Note added at 1 hr (2010-02-27 16:57:18 GMT)
--------------------------------------------------

toxicitatea acută acvatică LC50

Adriana Sandru
Local time: 19:14
Native speaker of: Romanian
PRO pts in category: 16
Grading comment
Selected automatically based on peer agreement.

Peer comments on this answer (and responses from the answerer)
agree  Simon Charass
4 hrs
  -> Mulţumesc!
agree  cezara lucas
16 hrs
  -> Mulţumesc!
agree  Iosif JUHASZ
19 hrs
  -> Mulţumesc!
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Reference comments


3 hrs peer agreement (net): +2
Reference: What does LC50 mean?

Reference information:
LC stands for "Lethal Concentration". LC values usually refer to the concentration of a chemical in air but in environmental studies it can also mean the concentration of a chemical in water.

For inhalation experiments, the concentration of the chemical in air that kills 50% of the test animals in a given time (usually four hours) is the LC50 value.

Why study LD50's?

Chemicals can have a wide range of effects on our health. Depending on how the chemical will be used, many kinds of toxicity tests may be required.

Since different chemicals cause different toxic effects, comparing the toxicity of one with another is hard. We could measure the amount of a chemical that causes kidney damage, for example, but not all chemicals will damage the kidney. We could say that nerve damage is observed when 10 grams of chemical A is administered, and kidney damage is observed when 10 grams of chemical B is administered. However, this information does not tell us if A or B is more toxic because we do not know which damage is more critical or harmful.

Therefore, to compare the toxic potency or intensity of different chemicals, researchers must measure the same effect. One way is to carry out lethality testing (the LD50 tests) by measuring how much of a chemical is required to cause death. This type of test is also referred to as a "quantal" test because it is measures an effect that "occurs" or "does not occur".

Who invented the idea of an LD50?

In 1927, J.W. Trevan attempted to find a way to estimate the relative poisoning potency of drugs and medicines used at that time. He developed the LD50 test because the use of death as a "target" allows for comparisons between chemicals that poison the body in very different ways.

What are some other toxicity dose terms in common usage?
LD01 Lethal dose for 1% of the animal test population
LD100 Lethal dose for 100% of the animal test population

LDLO The lowest dose causing lethality

TDLO The lowest dose causing a toxic effect


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Note added at 3 hrs (2010-02-27 18:24:21 GMT)
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http://www.ccohs.ca/oshanswers/chemicals/ld50.html

Sandra & Kenneth Grossman
Israel
Works in field
Native speaker of: Native in EnglishEnglish, Native in RomanianRomanian
PRO pts in category: 4

Peer comments on this reference comment (and responses from the reference poster)
agree  Simon Charass
1 hr
agree  Adriana Sandru
11 hrs
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