What's the difference between contaminated and impure?

Contaminated


Definition:

  • (imp. & p. p.) of Contaminate

Example Sentences:

  • (1) As the percentage of rabbit feed is very small compared to the bulk of animal feeds, there is a fair chance that rabbit feed will be contaminated with constituents (additives) of batches previously prepared for other animals.
  • (2) These results indicate that HBV markers in cord blood are either false-positive or due to contamination by maternal blood rather than an indication of in utero infection.
  • (3) There have been numerous documented cases of people being forced to seek hospital treatment after eating meat contaminated with high concentrations of clenbuterol.
  • (4) External exposures to a contaminated fishing net and fishing boat are considered pathways for fishermen.
  • (5) Comprehensive regulations are being developed to limit human exposure to contamination in drinking water by the United States Environmental Protection Agency (EPA) under the authority of the Safe Drinking Water Act (SDWA).
  • (6) In South Africa, health risks associated with exposure to toxic waste sites need to be viewed in the context of current community health concerns, competing causes of disease and ill-health, and the relative lack of knowledge about environmental contamination and associated health effects.
  • (7) The inhibitory effect was not due to contaminating rT3 in the liver homogenates.
  • (8) With an increased quantity o blood per taking by blood bactericidia a decreased contamination rate is to be expected.
  • (9) The behaviour of the enzyme from Candida utilis and from Baker's yeast on columns of these and of Blue Sepharose CL-6B was examined, together with the behaviour of the contaminating enzyme, ribulose 5-phosphate 3-epimerase (EC 5.1.3.1).
  • (10) The mining activity does not seem to have contaminated drinking water significantly.
  • (11) Furthermore, Methylene Blue contamination of the standard stain increased the rate of error in image analysis of white blood cell nuclei due to variations of staining intensity.
  • (12) Careless Herbicidal aerial spray of a field for weed control and defoliation of cotton before machine picking, resulted in the contamination of an adjoining reservoir, killing large volume of fish.
  • (13) Whereas the untreated Rhodobacter growth medium was contaminated with 1.2 ppb Mo, as analyzed by inductively coupled plasma mass spectrometry (ICP-MS), the activated carbon-treated medium was below the ICP-MS detection limit (less than 0.05 ppb).
  • (14) Released aggregates of the 19.6-kDa protein were removed from suspension by ultracentrifugation and separated from contaminating membranes by washing in 1.0% sodium dodecyl sulfate (SDS).
  • (15) The effect was shown to be due to caldesmon and not to a trace contaminant by its full reversibility after addition of a monospecific caldesmon antibody.
  • (16) On day 7, washes were collected as on day 0, and a collar was attached to the neck to prevent contamination from saliva.
  • (17) The continued expression was not due to the presence of antigen or of contaminating lymphocytes.
  • (18) Both techniques are used by industry and regulatory agencies to monitor levels of fungal contamination at various stages of food handling, storing, processing and marketing.
  • (19) In all iodine-deficient regions such as the GDR, a frequent occurrence of thyroid autonomy with manifestation of hyperthyroidism following iodine contamination has to be taken into account.
  • (20) The differences in the microbial contamination of air between the two buildings was the result of reconstructions concerning the ventilation system as well as of making it more effective.

Impure


Definition:

  • (a.) Not pure; not clean; dirty; foul; filthy; containing something which is unclean or unwholesome; mixed or impregnated extraneous substances; adulterated; as, impure water or air; impure drugs, food, etc.
  • (a.) Defiled by sin or guilt; unholy; unhallowed; -- said of persons or things.
  • (a.) Unchaste; lewd; unclean; obscene; as, impure language or ideas.
  • (a.) Not purified according to the ceremonial law of Moses; unclean.
  • (a.) Not accurate; not idiomatic; as, impure Latin; an impure style.
  • (v. t.) To defile; to pollute.

Example Sentences:

  • (1) Two other impurities are pyrene derivatives but their acyl chains probably are not decanoic acid.
  • (2) No impurities in the technical grade ether influenced the responses.
  • (3) The UV and IR absorption spectra of compounds present in the eluate were compared with those of model compounds that were assumed to exist in the gel as impurities after the polymerization (monomers and oligomers of hydroxyethyl methacrylate, decomposition products of initiators).
  • (4) Chloramphenicol, dinitrophenol, and impurities present in some brands of agar all appear to inhibit the growth-medium-dependent branch of excision-repair.
  • (5) The combined results describe the depth of segregation of DMS blocks in Avcothane, the presence of DMS within the topmost 20 A in Biomer, and similar impurities in the model polymers.
  • (6) An impure sample of PLC inhibited sperm penetration, while a more purified preparation did not.
  • (7) A liquid chromatographic (LC) method was adapted for the determination of epinephrine and related impurities in intravenous and cardiac injections; ultraviolet (UV) and electrochemical detectors (EC) were used in series.
  • (8) The determination of potency or shelf life, impurity limit testing, and study of reaction mechanisms are considered as different aspects of drug stability.
  • (9) Isolated cytochrome c oxidase was fractionated by native-gel electrophoresis in Triton X-100, and a preparation of enzyme almost completely free of the usual impurities was recovered.
  • (10) Although these are worst case calculations, a consistent approach should be reconsidered to limit the additional effective dose equivalent from impurities to e.g.
  • (11) As little as 50 nmol of a protein may be quantified and an impurity peak of molecular weight ca.
  • (12) Not all impurities were found in every lot of drug investigated, and none of the impurities exceeded a concentration of 1% of the meperidine present.
  • (13) Skin impurities and fatty hair associated with acne were side effects in 22.5% of 378 patients during the first evaluation and in 10.8% of 369 patients at the second evaluation.
  • (14) The organic solvent soluble impurities exhibited strong mutagenic activity for TA98 and slight activity for TA100.
  • (15) Following this order the absorbents can be used for purification of human albumin from non-specific impurities taking into account stronger adsorption of albumin or impurities.
  • (16) Trace amounts of an impurity commonly produced in the synthesis of 1,2-distearoyl-3-sn-phosphatidylcholine, 1,3-distearoyl-2-sn-phosphatidylcholine, are found to dramatically reduce the rate of loss of small vesicles at 21 degrees C.
  • (17) It is shown on the basis of calculations of energy sublevels of the hyperfine structure that the effect of the geomagnetic field upon the impurity atoms in the volume of living cells should be considered in relation to the value of geomagnetic field induction pulses delta B.
  • (18) Contamination of cells by impurity atoms that may leach from electrodes was measured by atomic-absorption spectrophotometry and found to be negligible.
  • (19) Results presented here indicate that N-nitroso compound impurities are absent from the majority of the products tested.
  • (20) Eight of the proteins (L9, L11, L13, L21, L22, L35', L37 and L39) had no detectable contamination; the impurities in the others were no greater than 9%.