Hexavalent chromium is present in the form of a trophic-containing radical, mainly orange Cr2O72- in acidic solutions and yellow CrO42- in alkaline solutions. In the acidic environment has a strong oxidation, using this property, in analytical chemistry can be used to quantify the iron content, can also be used to detect whether the driver is drunk driving.

However, its harm to the human body is the focus of our attention, hexavalent chromium is an ingestion poison/inhalation poison. Then through the digestive tract invasion can cause vomiting, abdominal pain. It can cause dermatitis and eczema when it penetrates the skin. A serious hazard is a carcinogenic risk from long-term or short-term exposure or inhalation. But these are properties of hexavalent chromium, chromium metal, trivalent or tetravalent chromium does not have these toxicity.

So How Do We Know the Amount of Hexavalent Chromium in Water?

The content of hexavalent chromium in water was determined by the T8000-Cr online analyzer produced by Hangzhou Modi by acid oxidation and characteristic chromogenic agent colorimetry after masking interference ions. The pre-treated water sample is injected into the colorimetric tank by the injection pump, and then the masking agent is added to eliminate the influence of interfering substances. Then the pH of the solution is adjusted, and the characteristic color developer is added under the appropriate pH condition for color reaction. The color change of the solution within the measurement range is proportional to the concentration of hexvalent chromium in the water sample. You can calculate the amount of hexavalent chromium in the water sample. If the total chromium is measured, the oxidizer is added to the automatic line after pretreatment to oxidize the chromium of various valence states into hexavalent chromium, and then the colorimetric determination is carried out.

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