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Chemical analysis   /kˈɛməkəl ənˈæləsəs/   Listen
Chemical analysis

noun
1.
The act of decomposing a substance into its constituent elements.  Synonym: qualitative analysis.



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"Chemical analysis" Quotes from Famous Books



... principal facts with reference to the aerolites, upon which general dependence may be placed. Immediately after their descent they are always intensely hot. They are covered with a fused black incrustation, consisting chiefly of oxide of iron; and, what is most remarkable, their chemical analysis develops the same substances in nearly the same proportions, though one may have reached the earth in India and another in England. Their specific gravities are about the same; considering 1000 as the proportionate number for the specific gravity of water, that of some of the aerolites has been ...
— Harper's New Monthly Magazine, Volume 1, No. 4, September, 1850 • Various

... thousands of years before our era (fig. 224). The craftsman, seated before the furnace, takes up a small quantity of the fused substance upon the end of his cane and blows it circumspectly, taking care to keep it in contact with the flame, so that it may not harden during the operation. Chemical analysis shows the constituent parts of Egyptian glass to have been nearly identical with our own; but it contains, besides silex, lime, alumina, and soda, a relatively large proportion of extraneous substances, as copper, oxide of iron, and oxide of manganese, which they apparently knew ...
— Manual Of Egyptian Archaeology And Guide To The Study Of Antiquities In Egypt • Gaston Camille Charles Maspero

... the soil contains within itself some available plant food. We can determine by chemical analysis the exact amounts of the various plant foods—nitrogen, phosphoric acid, potash, etc.—which a crop of any vegetable will remove from the soil. The idea in scientific chemical manuring is to add to the available plant foods already in the soil just enough more to make the ...
— Home Vegetable Gardening • F. F. Rockwell

... pigment consisting of zinc sulphide and barium sulphate, sometimes exhibits the peculiar property of darkening on exposure to sunlight. This property is due to an impurity and apparently cannot be predicted by chemical analysis. During the cloudy days and winter months when powerful sunlight is unavailable, the manufacturer is in doubt as to the quality of his product and he needs an artificial light-source for testing it. In such a case the white flame-arc is serving satisfactorily, ...
— Artificial Light - Its Influence upon Civilization • M. Luckiesh

... the edge of the Ozark Mountains in central Arkansas issue springs of hot water which are effective in the alleviation of rheumatic and kindred ills. Although chemical analysis fails to explain the reason, the practice of many years has abundantly proved their worth. Before the coming of the white man they were known to the Indians, who are said to have proclaimed them neutral territory ...
— The Book of the National Parks • Robert Sterling Yard

... Persian wild goat. Those which I have seen are usually of the size and shape of a pigeon's egg and of a fine mahogany colour, with a smooth, polished surface. The Persian goat's bezoar-stone is found, on chemical analysis, to consist of "ellagic acid," an acid allied to gallic acid, the vegetable astringent product which occurs in oak-galls used until lately in the manufacture of ink. The bezoar-stone is probably a concretion formed in the intestine from some of the undigested portions of ...
— More Science From an Easy Chair • Sir E. Ray (Edwin Ray) Lankester

... but still among its author's best novels, should be placed 'La Recherche de l'absolu,' which, as its title implies, describes the efforts of a chemist to "prove by chemical analysis the unity of composition of matter." In the pursuit of his philosophic will-o'-the-wisp, Balthazar Claes loses his fortune and sacrifices his noble wife and children. His madness serves, however, to bring into relief the splendid qualities ...
— Library Of The World's Best Literature, Ancient And Modern, Vol 3 • Various

... possible to define exactly what occurs in the case of the ectoplasm, nor, on account of its vital connection with the medium and its evanescent nature, has it been separated and subjected to even the roughest chemical analysis which might show whether it is composed of those earthly elements with which we are familiar. Is it rather some coagulation of ether which introduces an absolutely new substance into our world? Such a supposition seems most probable, for a comparison with the analogous substance examined ...
— The Vital Message • Arthur Conan Doyle

... part of the trunk, the axillae, the sclerotic coats of the eyes, the nails, and the skin of the head remained in their natural state and preserved their natural color. The linen of the patient was stained blue. Chemical analysis seemed to throw no light on this case, and the patient improved on alkaline treatment. She vomited blood, which contained sufficient of the blue matter to stain the sides of the vessel. She also stated that ...
— Anomalies and Curiosities of Medicine • George M. Gould

... contemporaries could never have anticipated that the action of the voltaic pile would discover to us, in the alkalies, metals of a silvery luster, so light as to swim on water, and eminently inflammable; or that it would become a powerful instrument of chemical analysis, and at the same time a thermoscope and a magnet. When Hygens first observed, in 1678, the phenomenon of the polarization of light, exhibited in the difference between the two rays into which a ...
— COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 • Alexander von Humboldt

... filled with dust and rubbish, but on emptying them, a dried purple deposit was found at the bottom of each, thus testifying to their former use. If this deposit is in sufficient quantity to be submitted to chemical analysis, we might learn something respecting the nature of really old wine. Apropos of this matter, Dr Buist says, that while we are digging up antiquities in Mesopotamia, we are neglecting those, not less valuable, which ...
— Chambers's Edinburgh Journal, No. 461 - Volume 18, New Series, October 30, 1852 • Various

... sac of the Purpurae is a liquid of a creamy consistency, and of a yellowish-white hue. On extraction, it is at first decidedly yellow; then after a little time it becomes green; and, finally, it settles into some shade of violet or purple. Chemical analysis has shown that in the case of the Murex trunculus the liquid is composed of two elementary substances, one being cyanic acid, which is of a blue or azure colour, and the other being purpuric oxide, which is a bright red.[819] In the case of the Murex brandaris one element only has ...
— History of Phoenicia • George Rawlinson

... any kind of chemical analysis, but the scientist did what was possible. He tried to dissolve the powder in water, and failed. He tried vinegar, as the only acid available, and failed. He tried ...
— The Blue Ghost Mystery • Harold Leland Goodwin

... obtained by a resident defendant through service of process or appropriate pleading upon the plaintiff's attorney of record.[763] For similar reasons, the requirements, without excluding other evidence, of a chemical analysis as a condition precedent to a suit to recover damages resulting to crops from allegedly deficient fertilizers is not deemed to ...
— The Constitution of the United States of America: Analysis and Interpretation • Edward Corwin

... have little conception. All our powers are tremendously exaggerated in these little people. Their power makes them acquainted with the inner molecular constitution of matter far more intimately than we can attain to by our coarse chemical analysis. Our world is agitated by vibrations, coarse and fine, of which our senses can take in only the slower ones. If they exceed three thousand a second, they become too shrill for our ears. It is thought that the world of sound with the insects begins ...
— Under the Maples • John Burroughs

... and holds him fast. Death alone releases him. And now the leafs orgy begins: moistening the fly with a fresh peptic fluid, which helps in the assimilation, the plant proceeds to digest its food. Curiously enough, chemical analysis proves that this sundew secretes a complex fluid corresponding almost exactly to the gastric juice in the ...
— Wild Flowers, An Aid to Knowledge of Our Wild Flowers and - Their Insect Visitors - - Title: Nature's Garden • Neltje Blanchan

... gases in the first column of this table are determined by experiment, and are fairly accurate but not entirely so. By multiplying these densities by 28.9 the molecular weights of the compounds as given in the second column are obtained. By chemical analysis it is possible to determine the percentage composition of these substances, and the percentages of nitrogen in them as determined by analysis are given in the third column. If each of these molecular weights is multiplied in turn by the percentage of nitrogen in the compound, ...
— An Elementary Study of Chemistry • William McPherson

... coal by this species of chemical analysis, not only is there to be found a perfect or indefinite gradation from a body which is perfectly combustible to one that is hardly combustible in any sensible degree, we should also fall into an inconveniency similar to that already mentioned, of confounding two things extremely different ...
— Theory of the Earth, Volume 1 (of 4) • James Hutton

... The chemical analysis of these three substances has led to the interesting result that they contain the same organic elements, united in the same proportion by weight; and—which is more remarkable—that they are identical in composition with the chief constituents of blood—animal fibrine and animal ...
— The World's Greatest Books - Volume 15 - Science • Various

... was called as a witness at the inquest upon the bodies of the unfortunate persons killed by the recent explosion at Bergen, N.J. The Professor having previously analyzed some of the explosive mixture, testified as follows:—"I have subjected it to chemical analysis, and find it to correspond to the formula C{6}, H{3}, O{3}, and NO{5}; it is well made nitro-glycerin; the substance freezes at about 46; it is made to decompose in a very peculiar way; on moistening paper with it it burns with rapidity; it does not explode ...
— Scientific American, Vol. 17, No. 26 December 28, 1867 • Various

... said I, "but you must recollect I am now speaking of practical agriculture. If I wanted to raise a good crop of cabbage, I should not think of consulting a chemical analysis of the cabbage. If I set out cabbage on an acre of land, which, without manure, would produce 16 tons of cabbage, does any one mean to tell me that if I put the amount of nitrogen, phosphoric acid and potash which ...
— Talks on Manures • Joseph Harris

... and scientists began to make microscopical researches and investigations, not only in the medical profession, but also in botanical and geological studies, etc., and since 1870, when, throughout the civilized world, the microscope came into general use in chemical analysis and other studies, it ceased to be considered an accessory, and is now regarded as an extremely necessary apparatus, especially in minute examinations and investigations; also in the advancement of every branch of science ...
— The Arena - Volume 4, No. 23, October, 1891 • Various

... woofed a great gob of smoke toward the veranda roof. "Andie, you won't have to make any chemical analysis of the ashes of these cigars to prove they're good. There is an artist—Hernando—and more! I used to drop in to see him after a hot day. He would let me roll out a cigar for myself in one of his precious moulds, and we'd sit and talk of a heap ...
— Sonnie-Boy's People • James B. Connolly

... distinguish any, either by taste or smell. I know that chemical analysis is said to show it; but may not the alcohol be ...
— Beauty and The Beast, and Tales From Home • Bayard Taylor

... good things in the country than any other man in the service. He is believed to have an instinct that will unfailingly lead him, in the dankest night, to the roosting place of the most desirable poultry, and after he has camped in a neighborhood for awhile it would require a close chemical analysis to find a trace ...
— Andersonville, complete • John McElroy

... of the Rev. Chauncey Burr, for it bristled with references, to the Bible and Shakespeare, to Grace Darling and Florence Nightingale. Among her nostrums was a bottle of "Jordan Water," which she sold at the modest figure of L15 15s. a flask. Chemical analysis, however, revealed it to have come, not from Palestine, but from the River Thames. She also supplied, on extortionate terms, various drugs and "medical treatment" of a description upon which the Law frowns heavily. ...
— The Magnificent Montez - From Courtesan to Convert • Horace Wyndham

... might be so described," answered her adviser, cautiously. "But it is mainly scientific. It is the outcome of a great chemical analysis." ...
— Austin and His Friends • Frederic H. Balfour

... is the dry bark of virgin forest trees. Since civilization invaded its home it has acquired the habit of growing even on telegraph wires, which has given it the popular name of 'telegraph tresses'. Chemical analysis of this plant shows the presence of an average of 17 per cent iron, 36 per cent silicic acid and 1ยท65 per cent phosphoric acid. This applies to samples taken from districts where the rainwater - the only source from which the plant could extract these ...
— Man or Matter • Ernst Lehrs

... soil samples to be taken from an area covering ten thousand square miles. Our chemical analysis has been thorough, and we find nothing that could be remotely harmful to human life. Atmospheric samples produce the same negative results. On the other hand, we have direct evidence that no animal life has ever evolved on Rythar; the life cycle ...
— The Guardians • Irving Cox

... proceeding still further, secured the services of two of the most distinguished professors of chemistry in this country, Messrs. Markoe and Baird, and submitted to them in camera sixty-seven samples of different inks, known only by numbers, for chemical analysis; in a long and exhaustive report on the work they had set out to accomplish, and also with a dissertation on the chemistry of inks in general, they ...
— Forty Centuries of Ink • David N. Carvalho

... owing to something in that law of compensation which appears to permeate the universe. You have such an abhorrence of fire, fumes, smoke, crash, clatter, and explosions, that your only son is bound, as it were, to take special delight in chemical analysis and combination, to say nothing of mechanical force and contrivance, in order that a balance of some sort may be adjusted which would otherwise be thrown out of order by your—pardon me—comparative ignorance of, and indifference to ...
— In the Track of the Troops • R.M. Ballantyne

... sensible time elapsed between the delivery of the blow and the death of the victim. You will see, therefore, that I shall prove to your satisfaction that Mr. Darrow's death did not result from prussic acid, as stated by the prisoner. I shall show you that a chemical analysis of the wound made in my laboratory shortly after the murder gave none of the well-known prussic-acid reactions. I shall prove to you that John Darrow sprang to his feet after receiving the blow which caused his death. That he clutched at his throat, and that, after an effort consuming ...
— The Darrow Enigma • Melvin L. Severy

... indiscriminately for the carbonate and the hydrous silicate of zinc, and even now both species are included by miners under the same term. The two minerals often closely resemble each other in appearance, and can usually only be distinguished by chemical analysis; they were first so distinguished by James Smithson in 1803. F.S. Beudant in 1832 restricted the name calamine to the hydrous silicate and proposed the name "smithsonite" for the carbonate, and these meanings of ...
— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 - "Bulgaria" to "Calgary" • Various

... eighteenth century ridicules the idea as mere silly talk. He admits, indeed, that the women were conveyed to the place of execution in carts; but he denies that there is any deep significance in the cart, and he is prepared to maintain this view by a chemical analysis of the timber of which the cart was built. To clinch his argument he appeals to plain matter of fact and his own personal experience. Not a single instance, he assures us with apparent satisfaction, can be produced ...
— Balder The Beautiful, Vol. I. • Sir James George Frazer

... remarks[671] that white men "born in the torrid zone walk barefoot with impunity in the same apartment where a European, recently landed, is exposed to the attacks of the Pulex penetrans." This insect, the too well-known chigoe, must therefore be able to distinguish what the most delicate chemical analysis fails to distinguish, namely, a difference between the blood or tissues of a European and those of a white man born in the country. But the discernment of the chigoe is not so surprising as it at first ...
— The Variation of Animals and Plants Under Domestication, Volume II (of 2) • Charles Darwin

... just so similar as two draughtsmen hastily copying from a common model would make them. The doctor was unnerved: he hurried homeward, and immediately submitted the honey on the papyrus to a rigorous chemical analysis: he suspected poison—a subtle poison—as the means of a suicide, grotesquely, insanely accomplished. He found the fluid to be perfectly innocuous,—pure honey, ...
— Prince Zaleski • M.P. Shiel

... one of the very rare cases where a chemical analysis has been conducted in open court. The chemist first tested a standard trade morphine pill with sulphuric acid, so that the jury could personally observe the various color reactions for themselves. He then took one of the contested pills ...
— Courts and Criminals • Arthur Train

... only dependence. The mill on the property had, of course, been frozen up, and only after hours of hard work, could my husband and boys so far clear it of ice, as to succeed in making flour, and such flour! I have always regretted that we did not preserve a specimen for exhibition and chemical analysis, for verily the like was never seen before, and I defy any one of our great Minneapolis mills to produce an imitation of it. The wheat was very smutty, and having no machinery to remedy this evil, all efforts to ...
— 'Three Score Years and Ten' - Life-Long Memories of Fort Snelling, Minnesota, and Other - Parts of the West • Charlotte Ouisconsin Van Cleve

... names a leveling-down of ability makes for waste. No two things in nature are alike. We build our cars absolutely interchangeable. All parts are as nearly alike as chemical analysis, the finest machinery, and the finest workmanship can make them. No fitting of any kind is required, and it would certainly seem that two Fords standing side by side, looking exactly alike and made so exactly alike that ...
— My Life and Work • Henry Ford

... law presented, which the assisting physicians proposed, and which were essential to render it satisfactory; and finally, that the coats of the stomach, instead of being preserved and submitted to chemical analysis were, according to his own acknowledgment, thrown away. The royal tribunal adjudged him to be deprived of his appointment, and to be banished from the kingdom. This decision would not of course, diminish the suspicion already excited; and among other physicians, who were consulted ...
— Thaumaturgia • An Oxonian

... my degree in medicine, when I was studying chemical analysis, I heard a student, who was already a practising physician, state that zinc was an element which contained a great deal of hydrogen. When the professor attempted to extricate him from his difficulty, it became apparent that the future doctor had no idea of what an element was. My classmate, ...
— Youth and Egolatry • Pio Baroja

... and tillage methods, rotation of crops, &c. The farm is within 18 miles of the capital city, Melbourne, and is easy of access by farmers from all parts of the State. Much of the soil closely resembles in physical character and chemical analysis that of the principal wheatgrowing districts. At Longerenong Agricultural College and the Rutherglen Viticultural College attention is given to the improvement of wheat by systematic selection, crossbreeding and hybridisation in ...
— Wheat Growing in Australia • Australia Department of External Affairs

... fowl was tested by cooking for flavor, succulence, and tenderness. The other half was carefully prepared for chemical analysis by separating the meat from the bones. The flesh was thoroughly mixed and run through a sausage cutter, mixed again, and the process repeated three times. From different parts of this mixture a large sample was taken, from ...
— Scientific American Supplement, No. 795, March 28, 1891 • Various

... known, may be produced; and those all possess lower illuminating powers than acetylene. In two of those experiments already described, where Lewes observed maximum temperatures ranging from 703 deg. to 807 deg. C., samples of the gas which issued when the heat was greatest were submitted to chemical analysis, and their illuminating powers were determined. The figures ...
— Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield

... solids are formed from the fluids, and consequently they are reduced, by chemical analysis, to the same ultimate elements. The particles of matter in solids are arranged variously; sometimes in fi'bres, (threads,) sometimes in lam'i-nae, (plates,) sometimes homogeneously, as in ...
— A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) • Calvin Cutter

... likeness between all these bodies is obvious from the fact that when any of them is strongly heated, or allowed to putrefy, it gives off the same sort of disagreeable smell; and careful chemical analysis has shown that they are, in fact, all composed of the elements carbon, hydrogen, oxygen, and nitrogen, combined in very nearly the same proportions. Indeed, charcoal, which is impure carbon, might be ...
— A Book of Natural History - Young Folks' Library Volume XIV. • Various

... assuming it as proved, that cinchonia is the more powerful salifiable base of the two in a medical point of view, considers, therefore, that, in regard to the above barks, chemical analysis justifies the order of their relative value, which had been previously deduced from their medical employment.—Archives Generales ...
— North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826 • Various

... and take the sugarcorn in comparison with the ordinary or starch producing forms for our starting point. Both sugar- and starch-corns have smooth fruits when ripening. No difference is to be seen in the young ripe spikes. Only the taste, or a direct chemical analysis might reveal the dissimilarity. But as soon as the spikes are dried, a diversity is apparent. The starchy grains remain smooth, but the sugary kernels lose so much water that they become wrinkled. The former ...
— Species and Varieties, Their Origin by Mutation • Hugo DeVries



Words linked to "Chemical analysis" :   thermogravimetry, geological dating, dialysis, spectrographic analysis, qualitative analysis, quantitative analysis, polarography, spectrum analysis, spectroscopy, spectrometry, uranalysis, tare, urinalysis, dating, analysis, spectroscopic analysis, scatology



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