Most seafood products have the ability to enrich, in simple terms, a substance accumulates more and more, but can not be metabolized out. In this way, there will be some substance exceeding the standard, and of course, this is directly related to the water quality and environment.
This chapter water quality online monitoring instrument manufacturers to understand together with you why seafood products cadmium exceeded, how to avoid!
Cadmium is a heavy metal pollutant that accumulates and accumulates in water organisms (such as fish, zooplankton, etc.), resulting in toxic hazards to water organisms. In serious cases, it extends toxicity through the food chain and endangers human health. According to GB 2762-2012 National Standard for Food Safety, the limit of cadmium in scallops is 2.0mg/kg; However, cadmium levels in scallops have been detected in some cases. What’s going on here? The main reason is that it lives in shallow waters, when the water is seriously polluted, where the concentration of heavy metals is high, cadmium is easy to exceed the standard. In this way, if the cadmium content of seafood products is within the normal value, the water environment is not polluted!
So How Should We Reduce or Avoid Water Pollution? Water Quality Monitor is Indispensable!
Water quality monitoring equipment is installed in each major wastewater discharge outlet, real-time monitoring data is transmitted to the platform, and the staff can see whether the pollutants exceed the standard by viewing the data, and then discharge them after treatment. As for the detection of cadmium in water, Hangzhou Moody produced a called T8000-Cd total cadmium online analyzer, which is used to monitor the content of cadmium in water. The working principle of the monitoring equipment is that the pre-treated water sample is injected (with an injection pump) into the digestion reaction tank, the water sample will react with the acidic oxidizer, the cadmium in it will be uniformly oxidized to cadmium divalent, and then the pH of the solution will be adjusted to reach a strong alkali, and then the characteristic color developer will be added for extraction color reaction. In a certain measuring range, the degree of color change of the aqueous solution will be proportional to the concentration of cadmium in the water sample, so that the total amount of cadmium in the water sample can be calculated by measuring its color change.
