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MAK130

Sigma-Aldrich

Chromium Assay Kit

sufficient for 250 colorimetric tests

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About This Item

Code UNSPSC :
12161503
Nomenclature NACRES :
NA.84

Utilisation

sufficient for 250 colorimetric tests

Application(s)

cosmetics
environmental
food and beverages

Méthode de détection

colorimetric

Maladie(s) pertinente(s)

cancer

Température de stockage

−20°C

Description générale

Chromium, an essential trace element, is a transition metal that primarily exists in two stable oxidation states, hexavalent [Cr(VI)] and trivalent [Cr(III)]. Chromium is widely used in various industries such as electroplating, leather tanning, chrome paint, dying, hardened steel, ceramic, and glass. Cr(VI) is produced almost exclusively by industrial processes; whereas, in nature chromium primarily exists in its trivalent form. Cr(III) is generally regarded as nontoxic due to its poor absorption. Cr(VI) is considered a pulmonary carcinogen and has tested positive in genotoxicity tests. Cr(VI) is considered a serious pollutant in many water streams due to its carcinogenic potential. In trace amounts, Cr(III) may be required for glucose and lipid metabolism.

Caractéristiques et avantages

Compatible with high-throughput handling systems. Can be adapted for use with cuvettes.

Adéquation

This kit is suitable for the detection of chromium in biological, environmental, food, and beverage samples.

Principe

In this kit, chromium is determined in a simple, one-step assay in which Cr(VI) forms a specific complex with a chromgenic dye, resulting in a colorimetric (480 nm) product, proportional to the chromium present. Cr(III) can be converted to Cr(VI) with nitric acid/hydrochloric acid, allowing the determination of Cr(III) and/or total chromium [Cr(III) +Cr(VI)].

Mention d'avertissement

Danger

Classification des risques

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Met. Corr. 1 - Repr. 1B - Skin Irrit. 2

Code de la classe de stockage

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

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