- 行业: Printing & publishing
- Number of terms: 178089
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- Company Profile:
McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
Laboratory pH reference solution made of KH<sub>2</sub>PO<sub>4</sub> and Na<sub>2</sub>HPO<sub>4</sub>; when 0.025 molal (equimolal of the potassium and sodium salts), the pH is 6.865 at 25_C.
Industry:Chemistry
The law stating that if a substance is dissolved in two immiscible liquids, the ratio of its concentration in each is constant.
Industry:Chemistry
A test for the presence of glycerin or fats; a sample is heated with potassium bisulfate, and acrolein is released if the test is positive.
Industry:Chemistry
Low-temperature, analytical procedure related to fluorometry; based on the nature and intensity of the phosphorescent light emitted by an appropriately excited molecule.
Industry:Chemistry
The ratio of the concentrations of a given solute in equal volumes of two immiscible solvents after the mixture has been shaken and equilibrium established.
Industry:Chemistry
Separation of a chemical mixture (gas or liquid) by passing it over an adsorbent bed which adsorbs different compounds at different rates.
Industry:Chemistry
Type of activation analysis in which the _-photon gives all of its energy to an electron in the crystal under analysis, generating a maximum-sized pulse for that particular _-energy.
Industry:Chemistry
In chemical analysis, a sample submitted in such a way that neither its composition nor its identification as a check sample is known to the analyst.
Industry:Chemistry
An indicator used in solutions to detect slight excess of a substance or ion; precipitate becomes colored when the indicator is adsorbed. An example is fluorescein.
Industry:Chemistry
Measurement of the colorant concentration in a solution by means of the tristimulus values of three primary light filter-photocell combinations.
Industry:Chemistry
