Chemical test

From Wikipedia, the free encyclopedia

In chemistry, a chemical test is qualitative or quantitative procedure designed to prove the existence of, or to quantify, a chemical compound or chemical group with the aid of a specific reagent. A presumptive test is specifically used in medical science.

Contents 1 Biochemical tests 1.1 Reducing sugars 1.2 Proteins and polypeptides 2 Organic tests 3 Inorganic tests 4 References

[edit] Biochemical tests

• Clinistrips quantitatively test for sugar in urine
• The Kastle-Meyer test tests for the presence of blood
• Salicylate testing is a category of drug testing that is focused on detecting salicylates such as acetysalicylic acid for either biochemical or medical purposes.
• Iodine solution tests for starch
• The Van Slyke determination tests for specific amino acids
• The Zimmermann test for Ketosteroids
• Seliwanoff's_test for differentiating between aldose and ketose sugars
• Test for fat: add ethanol to sample, then shake; add water to the solution, and shake again. If fat is present, the product turns MILKY WHITE.

[edit] Reducing sugars

• Barfoed's test tests for reducing monosaccharides or disaccharides
• Benedict's reagent tests for reducing sugars or aldehydes
• Fehling's solution tests for reducing sugars or aldehydes, similar to Benedict's reagent
• Molisch's test for carbohydrates

[edit] Proteins and polypeptides

• The Bicinchoninic acid assay tests for proteins
• Biuret reagent tests for proteins and polypeptides
• Bradford protein assay measures protein quantitatively

[edit] Organic tests

• The Carbylamine reaction tests for primary amines
• The Griess test tests for organic nitrite compounds
• The Iodoform reaction tests for the presence of methyl ketones, or compounds which can be oxidized to methyl ketones
• The Schiff test detects aldehydes
• Tollens' reagent (Silver Mirror) tests for aldehydes
• The Zeisel determination tests for the presence of esters or ethers
• Lucas' reagent is used to determine mainly between primary, secondary and teriary alcohols.

[edit] Inorganic tests

• Barium chloride tests for sulfates
• The Beilstein test tests for halides qualitatively
• Borax bead test tests for certain metals
• The Carius halogen method measures halides quantitatively
• Chemical test for cyanide tests for the presence of cyanide, CN^-
• Copper sulfate tests for presence of water
• Flame tests test for metals
• The Gilman test tests for the presence of a Grignard reagent
• The Kjeldahl method quantitatively determines the presence of nitrogen
• Nessler's reagent tests for the presence of ammonia
• Ninhydrin tests for ammonia or primary amines
• The sodium fusion test tests for the presence of nitrogen, sulfur, and halides in a sample
• The Zerewitinoff determination tests for any acidic hydrogen

[edit] References