Substances mineral

PyrophjlHte [12269-78-2]—A naturally occurring mineral substance consisting predominantly of a hydrous aluminum siHcate, AI2O2 4Si02 20,... 

It is known that the reliability of analytical information obtained depends particularly on the range of reference materials (RM) used. The most of RMs developed by the Institute of Geochemistry, SB RAS are included in the State Register of certified types of National Certified Reference Materials of Russian Federation. The reference materials are routinely analyzed for the stability and their life durations are timely prolonged. Developed RMs (27 samples) characterize mainly mineral substances. 

Mineralstoff, m. mineral substance, mineral matter, -gehalt, m. mineral content, -wech-self m. mineral (or inorganic) metabolism, -zusammensetztmg,/. composition of mineral matter. 

When coal is heated to a high temperature in the absence of air, it undergoes decomposition volatile products (coal gas and coal tar) distill away and a residue called coke remains. Coke is a valuable industrial material which finds its chief use in the reduction of iron ore (iron oxide) to iron for the manufacture of steel. Coke is essentially carbon that still contains the mineral substances that are present in all coals (and form the ash that results when coal or coke is burned). 

The content of mineral substances in honey samples ranges from 0.2 to 10.3 g/kg (White, 1975). Potassium is the main mineral element with an... 

Mineral acids these are acids derived from mineral substances, such as, for example, hydrochloric acid which is obtained from common salt, nitric acid from sodium or potassium nitrate, sulfuric acid from sulfur, phosphoric acid from calcium phosphate, etc. 

McLean, Adam. Alchemical symbols - mineral substances. rhttp //www.levitv.com/alchemv/svmsubst.html1. 

Little direct, quantitative measurement has been done on bound water existing in equilibrium with clay mineral substances in... 

Currently produced iron oxide pigments are listed in Table 2.7. Similar pigments occur naturally in many parts of the world, but are of course mixed with other mineral substances. 

To the question, what is the cause of a chemical reaction Lavoisier s answer was descriptive and concrete, not geometric and abstract. Lavoisier did not rule out the possibility of an abstract and geometric chemical philosophy in the future but thought it was premature at the time. An avid investigator of the chemistry of organisms as well as of mineral substances, Lavoisier for the present shared the view of his contemporary, the British natural philosopher John Robison, that the phenomena of fermentation, nutrition, secretion, and crystallization are not susceptible to simple mechanical reasoning. 

Among the mineral substances I found one which exhibited many colours, and proved to be of the greatest efficacy in art. The spiritual essence of this substance I extracted, and therewith restored our sick brother, in a few days, to perfect health. For the strength of this spirit was so great as to quicken the prostrate spirit of my diseased brother, who, from that day to the day of his death, remembered me in his hourly prayers. And his prayers, together with my own diligence, so prevailed with God, that there was revealed to me that great secret which God ever conceals from those who are wise in their own conceits. 

Olanders B., Biomass combustion Interactions between NO, CO and mineral substances, PhD Thesis, Dept, of Inorganic Chemistry, Goteborg (Sweden), (1994). 

Storage. The liver not only stores energy reserves and nutrients for the body, but also certain mineral substances, trace elements, and vitamins, including iron, retinol, and vitamins A, D, K, folic acid, and Bi2. 

The family of connective-tissue cells includes fibroblasts, chondrocytes (cartilage cells), and osteoblasts (bone-forming cells). They are specialized to secrete extracellular proteins, particularly collagens, and mineral substances, which they use to build up the extracellular matrix (see p. 346). By contrast, osteoclasts dissolve bone matter again by secreting and collagenases (see p. 342). 

The human body contains 1-1.5 kg Ca most of which (about 98%) is located in the mineral substance of bone (see p. 362). 

Resorption of the required mineral substances from food usually depends on the body s requirements, and in several cases also on the composition of the diet. One example of dietary influence is calcium (see p. 342). Its resorption as Ca is promoted by lactate and citrate, but phosphate, oxalic acid, and phytol inhibit calcium uptake from food due to complex formation and the production of insoluble salts. 

Concentrations of Na", C, and Cl in body fluids, and the physiological variables dependent on these (e. g. blood pressure), are subject to strict regulation. The principal site of action of the hormones involved is the kidneys, where hormones increase or reduce the resorption of ions and recovery of water (see pp. 326-331). The concentrations of Ca and phosphate, which form the mineral substance of bone and teeth, are also precisely regulated. 

Translator s Preface to the English Edition of Klaproth s Analytical Essays towards Promoting the Chemical Knowledge of Mineral Substances ... 

Woulfe, Peter, Experiments on some mineral substances, Phil. Trans., 69,... 

In 1821 the Reverend J. J. Conybeare (1779—1824) named an Australian mineral in honor of the eminent chemist to whom we are indebted for the most valuable contributions towards the history and analysis of this class of mineral substances this form of mineral tallow is still known as hatchettine or hatchettite. He found later, however, that... 

Hatchett, Charles, An analysis of a mineral substance from North America... 

Hatchett s analysis of the American mineral substance containing a metal hitherto unknown, ibid., 6, 323-4 (Nov., Dec., 1802, Jan, 1803). 

Contributions towards the chemical knowledge of mineral substances, by the... 

Oeuvres de Lavoisier, Vol. 2, Impnmerie Imp6riale, Pans, 1862, pp. 157-9. (21 ) Klaproth, M, H, Analytical Essays towards Promoting the Chemical Knowledge of Mineral Substances, T. Cadell and W. Davies, London, 1801, pp. 266-73. 

Knowledge of Mineral Substances, Cadell and Davies, London, 1801. pp. 223-37 and 387-98. 

Gregor, W., Experiments on a mineral substance formerly supposed to be... 

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