Requirement inorganic element

The determination of an inorganic element in an organic matrix usually requires a preliminary treatment to remove the organic matter completely, either by dry-ashing or by oxidation with acids such as nitric, sulfuric or perchloric. Then, the problem reverts to the determination of an inorganic analyte in an inorganic matrix, as above. You should be aware that losses of trace elements can occur during such oxidation processes, either by volatilization or by adsorption onto the surface of the equipment used. 

The proverbial well-balanced diet should be able to provide adequate amounts of all of the necessary inorganic elements the body requires. The balancing act is not as simple as it may seem. Dietary restriction both in quantify and diversity is frequently encountered for economic, social, ethnic, esthetic, and religious reasons, as well as ignorance. 

In early studies of major, minor, and trace elements in coal (9 13), coal ash was analyzed using emission spectroscopy. Recent studies (3.4.14.15) have employed several quantitative multielement instrumental methods. The instrumental methods used at the Illinois State Geological Survey and the United States Geological Survey are shown in Table I. Because a particular analytical technique is better suited for certain elements than for others, a combination of methods is usually necessary to determine all elements of interest. Methods for determining inorganic elements in coal must be accurate and precise. In addition, if possible, they should determine a large number of elements of interest simultaneously, require relatively little sample preparation, be capable of automation, produce an output compatible with... 

All the required metallic elements can be supplied as nutrients in the form of the cations of inorganic salts. K, Mg, Ca and Fe are normally required in relatively large amounts and should normally always be included as salts in culture media. Table 9 shows which salts are soluble and which are insoluble in water, as well as commonly used inorganic and trace elements and concentration ranges. 

For both animals and man, the requirement of inorganic elements is extremely important. Requirement is the lowest continuous level of nutrient intake that, at a specified efficiency of utilization, will maintain the defined level of nutritive in the individual. 

Individuals differ in their requirements even if they may have the same general characterization (age, sex, physiological size, body size). One may therefore speak of the average requirements of a group of individuals, or of the level that marks a point in the tail of the requirement distribution curve - the level previously identified as the recommended or safe level of inorganic element level intake. 

Our body requires trace elements of minerals in order to maintain homeostasis. Minerals are inorganic crystal substances that are found naturally on earth. Patients lacking an adequate level of these materials may take specific mineral-based dmgs to raise the level of minerals. 

---