What's the difference between adulteration and impurity?

Adulteration


Definition:

  • (n.) The act of adulterating; corruption, or debasement (esp. of food or drink) by foreign mixture.
  • (n.) An adulterated state or product.

Example Sentences:

  • (1) The means for detecting adulterated urine samples are offered, and a procedure for the management of urine-testing results is provided.
  • (2) While these results do not rule out effects of DHEA on metabolic rate or lipogenesis, they do indicate that the unpalatability of DHEA-adulterated diets may be a contributing factor in the observed effects on food intake and body weight.
  • (3) The most characteristic examples of nutritive value adulterations are presented: ascorbic and dehydroascorbic acids, other vitamins, derivatives of the insaturated fatty acids oxidation, changes in proteins.
  • (4) This paper reports a study on the application of derivative spectrum to the identification of tinglizi and its adulterants.
  • (5) Gough, as the degenerate black sheep of an English family trying to blackmail an American adulterer, would curl a long lip into a sneering smile, which became a characteristic of this fine actor's style.
  • (6) The effect during hypovolemia was evident when subjects had access to adulterated physiological saline, a solution more responsive to the PEG-induced need state, and quinine group behavior was not easily explained in terms of the tastes of quinine and saline combined together nor in terms of a posttreatment malaise effect.
  • (7) Her own debut album, 12 Stories (released on 22 October), displays the full range of her emotional acuity and wit in dissecting the strung-out, pill-addicted, adulterous heart of small-town America.
  • (8) This is a public health scandal easily on a par to those of the 1980s and 1990s and reminds me of the outrage over food adulteration and contamination in the mid 19th century.
  • (9) The absence of a significant creatinine concentration in a specimen can be used as an indication of direct or indirect adulteration of the urine specimen by dilution or replacement with water.
  • (10) Laboratory rats were exposed to chow adulterated with either 500 or 1000 ppm Aroclor 1254 for 30 days.
  • (11) Another unintentional source of poisoning is its use as an adulterant in heroin for "street" use.
  • (12) It is suggested that the citric: isocitric acid ratio can be used to detect adulterated products.
  • (13) To obtain a definitive identification of the adulterant it was necessary to also examine the electrophoretic mobility of myoglobin in sodium dodecylsulphate gels.
  • (14) We did not clearly establish the mechanism, but this case is unique since adulterants and contaminants were excluded unlike all previously reported patients.
  • (15) Direct toxicity or hypersensitivity to heroin or an adulterant is considered in the pathogenesis of myolysis.
  • (16) The intake of the adulterated fluid was near zero during food deprivation, and when a vegetable and fruit diet was available.
  • (17) All animals reduced their food intake in response to the dietary adulteration, with evidence of a dose-response effect, but this response did not differ as a function of litter size.
  • (18) These multiple mechanisms of action combined with the deleterious effects of often-present adulterants give rise to an unpredictable, variable, and potentially life-threatening cardiovascular response to cocaine administration.
  • (19) In experiment 2, pups were tested with dam's artificially adulterated food.
  • (20) In May 1981 a new disease caused by widespread food poisoning with adulterated rape-seed oil appeared in Spain.

Impurity


Definition:

  • (n.) The condition or quality of being impure in any sense; defilement; foulness; adulteration.
  • (n.) That which is, or which renders anything, impure; foul matter, action, language, etc.; a foreign ingredient.
  • (n.) Want of ceremonial purity; defilement.

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%.