Method for simultaneously measuring cadmium, molybdenum, germanium and boron elements in soil

Abstract

The invention discloses a method for simultaneously measuring cadmium, molybdenum, germanium and boron elements in soil. By adoption of the method, the elements of cadmium, molybdenum, germanium and boron in soil can be simultaneously determined, the tedious means of separately measuring the four elements of a soil sample through three times of independent preprocessing, and through independent determination by utilizing different instruments in the existing method procedure can be simplified, the use amount of the chemical reagent is reduced, and the labor intensity and the analysis cost of an analysis operator are lowered. ICP-MS is adopted for sample measurement, and compared with the traditional inorganic analysis technology, the ICP-MS technology has the characteristics of the lowestdetection limit, the widest dynamic linear range, the minimum disturbance, high analysis precision, fast analysis speed, and capability of simultaneous determination of multiple elements and providingthe analysis characteristics such as isotope information and the like.

Description

technical field [0001] The invention relates to the related field of soil trace element determination, in particular to a method for simultaneously measuring cadmium, molybdenum, germanium and boron in soil. Background technique [0002] Cd, Mo, Ge, B and other trace elements in the soil contain pollution elements and beneficial nutrients that have an important impact on agricultural production and human health. 1. The detection of boron involves at least three methods, which need to be improved in terms of detection efficiency or accuracy. The determination of Cd and Mo in soil in different standard methods and literatures mostly uses HNO3, HF, HClO4 tri-acid or HCl, HNO3, HF, HClO4 four-acid system, using electric hot plate or microwave digestion apparatus for digestion, using AAS, GFAAS or Determination by ICP-MS; Determination of germanium alone mainly adopts hydrofluoric acid, nitric acid, perchloric acid, phosphoric acid ore dissolving system or hydrofluoric acid, nit...

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Problems solved by technology

[0004] It can be seen that there are corresponding standards or documents for the determination of trace elements such as Cd, Mo, Ge, B, etc. by ICP-MS, but due to the difference in pretreatment methods and detection equipment, they are all determined separately and do not have four elements. Simultaneous measurement function, resulting in only one value can be obtained in one measurement

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