Detection of heavy metal content in soil by heavy metal detector

In terms of the needs of plants, they can be divided into two categories: one is the elements that are not required for plant growth and development, and the harm to human health is obvious, such as cadmium, mercury, lead, etc.; the other is the normal growth and development of plants. Elements, and the body has some physiological functions, such as copper, zinc, etc., but too much pollution will occur, hindering plant growth and development. Usually the upper limit of the content of these elements in normal soil is from one to several hundred mg/kg. So how do you measure the content of these heavy metals in the soil? There are many methods for determination, and in recent years, the application of soil heavy metal detectors has become even more useful.

Atomic Absorption Spectrophotometry is a national standard method selected for soil extract analysis, and its precision is very high. Graphite furnace AAS is high precision but expensive, usually flame AAS can meet the demand. However, AAS can only detect one element at a time, and different measurement methods are required for different elements, and the operator's requirements are relatively high. X-ray fluorescence analysis, especially energy-dispersive X-ray fluorescence analysis, has mature handheld products for sale on the market, allowing simultaneous rapid analysis of multiple elements and real-time observations. Because XRF does not require the use of strong acids, etc. to dissolve the sample, it is easy to use in the field and can meet the application requirements of metal detection in most soils. However, due to the nature of X-rays, to achieve laboratory-level accuracy, there are certain requirements for the preparation of samples for on-site testing.

The design principle of the soil heavy metal detector is the X-ray correlation principle, which plays an important role in the measurement of heavy metal content in the soil, and the measurement results are also very accurate.


The Magnetic beneficiation process or Magnetic Separation Process is to separate the iron ore with Magnetic Separator, which is also an environmental solution compared to Flotation Process, this solution is mainly used for iron ore or the other solution which needs to remove the iron impurity, such as it needs to remove the iron for the quartz ore processing plant and feldspar ore processing plant.


On the magnetic separator there are mainly two sections, magnetic section and non-magnetic section, during the slurry flows through the magnetic separator, the non-materials will be thrown out while the magnetic material will stay on the magnetic drum for a longer time, and discharged at the rear output. So they are effectively separated, for different kinds of iron ore, the magnetic field strength is different,by which it can be divided into common magnetic separator and high density magnetic separator. The density ranges from 1000-15000 Gauss.



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Magnetite Processing Plant

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