| D008722 |
Methods |
A series of steps taken in order to conduct research. |
Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique |
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| D009566 |
Nitrates |
Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical. |
Nitrate |
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| D010084 |
Oxidation-Reduction |
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). |
Redox,Oxidation Reduction |
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| D010472 |
Perchlorates |
Compounds that contain the Cl( |
Perchloric Acid Derivatives,Perchloric Acids,Acids, Perchloric |
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| D010756 |
Phosphoric Acids |
Inorganic derivatives of phosphoric acid (H3PO4). Note that organic derivatives of phosphoric acids are listed under ORGANOPHOSPHATES. |
Pyrophosphoric Acids,Acids, Phosphoric,Acids, Pyrophosphoric |
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| D002621 |
Chemistry |
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange. |
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| D002712 |
Chlorides |
Inorganic compounds derived from hydrochloric acid that contain the Cl- ion. |
Chloride,Chloride Ion Level,Ion Level, Chloride,Level, Chloride Ion |
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| D003124 |
Colorimetry |
Any technique by which an unknown color is evaluated in terms of standard colors. The technique may be visual, photoelectric, or indirect by means of spectrophotometry. It is used in chemistry and physics. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
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| D004396 |
Coloring Agents |
Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. |
Coloring Agent,Dye,Dyes,Organic Pigment,Stain,Stains,Tissue Stain,Tissue Stains,Organic Pigments,Pigments, Inorganic,Agent, Coloring,Inorganic Pigments,Pigment, Organic,Pigments, Organic,Stain, Tissue,Stains, Tissue |
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| D000397 |
Air Pollution |
The presence of contaminants or pollutant substances in the air (AIR POLLUTANTS) that interfere with human health or welfare, or produce other harmful environmental effects. The substances may include GASES; PARTICULATE MATTER; or volatile ORGANIC CHEMICALS. |
Air Quality,Air Pollutions,Pollution, Air |
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