Method for detecting heavy metal content in lax leaf millettia root

Abstract

The invention relates to a method for detecting heavy metal content in laxleaf millettia root. The method comprises the steps of collecting a dry laxleaf millettia root sample, grinding the laxleaf millettia root sample into powder, weighing and taking specified weight of laxleaf millettia root sample powder, adding the powder into a digestion tank, adding 2-7ml nitric acid and 1-3ml of hydrogen peroxide into the digestion tank, covering and sealing the digestion tank, putting the digestion tank into a microwave sample preparation instrument, using the microwave sample preparation instrument to digest the laxleaf millettia root sample powder to obtain a digested substance, using purified water to dilute and transfer the digested substance to a measuring bottle to a set mark, mixing and blending uniformly to obtain a sample solution, using an inductively coupled plasma mass spectrometer to measure the content of lead, cadmium, arsenic, mercury and copper in the laxleaf millettia root. The method for detecting heavy metal content in laxleaf millettia root has the advantages of being high in the sensitivity of measuring the content of lead, cadmium, arsenic, mercury and copper in the laxleaf millettia root, low in interference, good in accuracy and precision, thus capable of ensuring the safety of the serving of the laxleaf millettia root.

Description

technical field [0001] The invention relates to the technical field of drug detection, in particular to a method for detecting heavy metal content in calf force. Background technique [0002] Xiao Niu Li is the root of Papilionaceae plant Millettia pulchra Kurz var. Laxior (Dunn) Z. Weir, a perennial woody plant, the production of anti-inflammatory tincture and hospital preparation compound longan ginseng injection requires large quantities The wild xiaoniuli medicinal materials are in short supply and are becoming increasingly exhausted. Now there are small-scale artificial cultivations. However, due to the intensification of environmental pollution and the influence of heavy metals in the soil, xiaoniuli has the risk of excessive heavy metal content; Therefore, it is necessary to establish a fast, simple, accurate and environmentally friendly method for the determination of heavy metals in Zhuang medicine. Contents of the invention [0003] The technical problem to be s...

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Problems solved by technology

[0002] Xiao Niu Li is the root of Papilionaceae plant Millettia pulchra Kurz var. Laxior (Dunn) Z. Weir, a perennial woody plant, the production of anti-inflammatory tincture and hospital preparation compound longan ginseng injection requires large quantities The wild xiaoniuli medicinal materials are in short supply and are becoming increasingly exhausted. Now there are small-scale artificial cultivations. However, due to the intensification of environmental pollution and the influence of heavy metals in the soil, xiaoniuli has the risk of excessive heavy metal content; Therefore, it is necessary to establish a fast, simple, accurate and environmentally friendly method for the determination of heavy metals in Zhuang medicine.

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