| 单词 | chemical analysis |
| 释义 | chemical analysis (once / 15251 pages) n WORD FAMILY chemical analysis: chemical analyses USAGE EXAMPLESEach drink, served in unmarked, identical black glasses, is evaluated and subjected to chemical analyses. Reuters(Nov 17, 2016) This, and chemical analysis of both pigments, showed that the red hue in the flickers' color-changing feathers came from honeysuckle berries. National Geographic(Oct 21, 2016) Her department’s experts in chemical analysis, often involved in drug cases, are assisting specialists in document forensics. Wall Street Journal(Sep 14, 2016) n the act of decomposing a substance into its constituent elements Syn|Hypo|Hyper qualitative analysis uranalysis, urinalysis (medicine) the chemical analysis of urine (for medical diagnosis) scatology(medicine) the chemical analysis of excrement (for medical diagnosis or for paleontological purposes) polarographyan electrochemical method of chemical analysis quantitative analysis, quantitative chemical analysischemical analysis to determine the amounts of each element in the substance spectrographic analysis, spectrometry, spectroscopic analysis, spectroscopy, spectrum analysisthe use of spectroscopes to analyze spectra dialysisseparation of substances in solution by means of their unequal diffusion through semipermeable membranes dating, geological datinguse of chemical analysis to estimate the age of geological specimens thermogravimetrythe measurement of changes in weight as a function of changes in temperature used as a technique of chemically analyzing substances colorimetric analysis, colorimetryquantitative chemical analysis by color using a colorimeter volumetric analysisquantitative analysis by the use of definite volumes of standard solutions or reagents volumetric analysisdetermination of the volume of gases (or changes in their volume) during combination gravimetric analysisquantitative analysis by weight apheresis, pheresisa procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion haemodialysis, hemodialysisdialysis of the blood to remove toxic substances or metabolic wastes from the bloodstream; used in the case of kidney failure mass spectroscopythe use of spectroscopy to determine the masses of small electrically charged particles microwave spectroscopythe use of spectroscopy to study atomic or molecular resonances in the microwave spectrum potassium-argon datinggeological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon carbon dating, carbon-14 dating, radiocarbon datinga chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14; believed to be reliable up to 40,000 years rubidium-strontium datinggeological dating based on the proportions of radioactive rubidium into its decay product strontium; radioactive rubidium has a half-life of 47,000,000,000 years analysis an investigation of the component parts of a whole and their relations in making up the whole |
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