Water heavy metal ion detection method

Abstract

The invention discloses a water heavy metal ion detection method. The method comprises: step 1, detection water extraction: taking ten cleaned and sealed test tubes to a detection water area, respectively taking water twice in a shallow layer, a middle layer and a deep layer, and then stirring the water flow to mix the water of different depths. The invention relates to the technical field of heavy metal ion detection. The invention discloses the water heavy metal ion detection method, during detection, sampling is carried out at multiple points, during sampling, water is taken from the shallow layer, the middle layer and the deep layer twice, then the water flow is agitated to mix the water at the shallow layer, the middle layer and the deep layer, then water is taken from the surface layer and the middle layer respectively for two times, water is taken at multiple points, so that the detection result is more precise, the detection error caused by the environmental factor is substantially reduced, the water sample is stored at the same temperature of the water body at the water taking position, the inaccurate detection result caused by the external temperature change is prevented,and the detection precision is increased.

Description

technical field [0001] The invention relates to the technical field of heavy metal ion detection, in particular to a detection method of heavy metal ions in water quality. Background technique [0002] Heavy metals refer to metals with a specific gravity greater than 5, and heavy metals refer to metals with an atomic weight greater than 55. For example, the atomic weight of iron is 56 and greater than 55, so it is also a heavy metal. There are about 45 kinds of heavy metals, generally belonging to transition elements, such as copper, lead, Zinc, iron, cobalt, nickel, manganese, cadmium, mercury, tungsten, molybdenum, gold, silver, etc. Although heavy metals such as manganese, copper, and zinc are trace elements required for life activities, most heavy metals such as mercury, lead, cadmium It is not necessary for life activities, and all heavy metals are toxic to the human body if they exceed a certain concentration. In addition, although arsenic is not a heavy metal, its sou...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for detecting heavy metal ions in water quality, which solves the problem that when sampling water, it is often simply sampled in the shallow, middle and deep layers, and the accuracy of the obtained detection results is not high enough. , is easily affected by the distribution of water quality, and when the water sample is preserved, the external environment is easy to affect the water sample, resulting in errors in the test results

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