Total chromium actually refers to the total content of chromium ions under different shapes. Among them, chromium ions should be noted to be divided into trivalent and hexavalent chromium ions. Under normal circumstances, total chromium actually refers to the sum of hexavalent chromium and trivalent chromium in water. The following is an understanding of the hazards brought by hexavalent chromium and trivalent chromium, which will make you have to pay attention!
Hexavalent chromium is an ingested poison. If it comes into contact with the skin, it is very likely to cause sensitivity. It is more likely to cause hereditary genetic defects. Inhaling it is very likely to produce carcinogens and is also harmful to the environment! However, the characteristics of hexavalent chromium, chromium metal, trivalent or tetravalent chromium do not have these toxicities. Hexavalent chromium is easily absorbed by the human body. It can enter the human body through nitrification, respiratory tract, skin and other pathways.
The harm caused by different channels entering the human body can lead to varying degrees of hoarseness and atrophy of the nasal mucosa when breathing in air containing different concentrations of chromic anhydride. In severe cases, it may cause perforation of the nasal septum and bronchial dilation, etc. When invading through the nitrification channel, it can cause symptoms such as vomiting and abdominal pain. Dermatitis and eczema will occur when it invades through the skin. The major hazard is that there may be a risk of cancer when exposed to or inhaled for a long or short period of time.
Trivalent chromium refers to the combined state of chromium in the +3 state. Its disadvantages are second only to hexavalent chromium. In current product applications, it belongs to the environmentally friendly series. The content of trivalent chromium is of great significance to the quality of the chromium plating layer. Detecting and controlling the content of trivalent chromium not only enables us to understand the performance of the plating solution, the conductivity of the solution, the state of the anode and other conditions, but also ensures the normal progress of chromium plating. The content of trivalent chromium can be detected by colorimetry.
The instruments used in industry to determine the total chromium in wastewater can be called T8000-Cr online total chromium analyzer, online total chromium monitor, etc. The instruments for detecting hexavalent chromium are called online price analyzers, online hexavalent chromium monitors, etc. If you want to know more about water quality analyzers, you can follow Hangzhou Modi–Tech!
