Primary magnesium phosphate

Synonyms magnesium biphosphate primary magnesium phosphate acid magnesium phosphate magnesium tetrahydrogen phosphate... 

Primary ammonium phosphate. See Ammonium phosphate Primary amyl acetate. See Amyl acetate Primary amyl alcohol. See n-Amyl alcohol Primary decyl alcohol. See Decyl alcohol Primary isoamyl alcohol. See Isoamyl alcohol Primary magnesium phosphate. See Magnesium phosphate monobasic Primary octyl alcohol. See Caprylic alcohol Primary sodium phosphate. See Sodium phosphate... 

Normally, the number of anions and cations in each fluid compartment are equal. Cell membranes play the critical role of maintaining distinct ICF and ECF spaces which are biochemically distinct. Serum electrolyte concentrations reflect the stores of ECF electrolytes rather than that of ICF electrolytes. Table 24-4 lists the chief cations and anions along with their normal concentrations in the ECF and ICF. The principal cations are sodium, potassium, calcium, and magnesium, while the key anions are chloride, bicarbonate, and phosphate. In the ECF, sodium is the most common cation and chloride is the most abundant anion while in the ICF, potassium is the primary cation and phosphate is the main anion. Normal serum electrolyte values are listed in Table 24—5. 

Precipitated phosphates of the zinc group and of the alkaline earth metals and magnesium dissolve in acetic acid, whereas those of iron, aluminium and chromium remain undissolved, a fact which is much used in qualitative analysis. The hydrion concentrations, expressed as pH, at which the various precipitates appear have been determined.5 All phosphates dissolve in excess of dilute strong acids, in many cases only that amount of acid being required which will convert the precipitate into a primary or dihydrogen phosphate (cf. CaH4(P04)2, p. 222). 

Pigmentation can range from "inert types, such as barium sulphate, magnesium and calcium silicates together with a primary coloured pigment such as iron oxide, to anticorrosive pigments such as red lead, zinc chromate, zinc or calcium phosphate, etc. Others, which may be included to... 

Bone growth and turnover are influenced by the metabolism of calcimn, phosphate, and magnesium and a number of hormones, the primary ones being parathyroid hormone (PTH) and 1,25-dihyroxyvitamin D (l,25[OH]2D). In addition, a large number of other hormones and factors are... 

The justification for these constituents can be seen in the structures of the primary metabolites of fungi. Many metabolic processes utilize phosphates, often with a magnesium ion. It has been estimated that a quarter to a third of all enzymes contain a metal ion as a functional component. Iron is particularly important in the cytochrome P450 oxidases which are involved in the biosynthesis of many fungal metabolites. Other metal ions, particularly zinc, play a... 

For a specific waste to be treated, the appropriate ratio of the treatment additive (phosphate) and pH control agent (magnesium oxide) that gives the best performance in terms of maximum contaminant level (MCL) and the secondary maximum contaminant levels (SMCL) for drinking water of the EPA s National Primary and Secondary Drinking Water Regulations is determined experimentally. One hundred grams of the waste is blended... 

Phosphates 51% primary (H2PO4), 39% secondary (HPO ") and 10% bound to calcium and magnesium. 

Fig. 38.35. Schematic representation of the primary binding site for a tetracyciine and the sugar phosphate groups of 16S rRNA, which aiso invoives a magnesium ion and the criticai functionai groups on the southern and eastern face of the tetracyciine. (Adapted from Brodersen et ai. The structurai basis for the action of the antibiotics tetracyciine, pactamycin, and hygromycin B on the 308 ribosomai subunit. Ceii 2000 103 1143-1154, with permission from Eisevier.)...

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