Fluorescent measuring method for inorganic arsenic in traditional Chinese medicinal material under-forest ginseng

Abstract

The invention discloses a method for measuring content of inorganic arsenic in traditional Chinese medicinal material under-forest ginseng through a two-channel atomic fluorescence spectroscopy. A sample IS subjected to treatments of crushing, acid addition, heating, oscillation and the like through a water-bath method, the inorganic arsenic in the sample can be transferred to a reaction solvent, and therefore the accuracy of the detection result is raised. The parameters of the two-channel atomic fluorescence spectroscopy are arranged as follows: the As lamp current is 60mA; the photoelectric multiplication negative high voltage is 255 V,; the carrier gas flow rate is 600 mL / min; the shield gas flow rate is 800 mL / min; the carrier gas is argon with a content of 99.99%; the reading duration is 3s; and the delay time is 5s. The standard curve regression equation A (fluorescence intensity) of the inorganic arsenic content C (mg / mL) is as follows: A is equal to 40.650C-1.9167, and the correlation coefficient R2 is 0.9992. The content of inorganic arsenic in the traditional Chinese medicinal material under-forest ginseng sample is calculated according to the regression curve. The method is simple in operation and rapid, has high sensitivity, can measure content of inorganic arsenic in the traditional Chinese medicinal material accurately, and guarantees human life safety.

Description

technical field [0001] The invention relates to a double-channel atomic fluorescence spectrometry method for determining the content of inorganic arsenic in Chinese medicinal material ginseng. Background technique [0002] Under-forest ginseng is to simulate the growth habits and ecological environment of mountain ginseng. Garden ginseng seeds are scattered or ginseng seedlings are planted in the virgin forest, and artificial cultivation is adopted to grow naturally without any artificial management. After decades of growth and then dug out, the quality and chemical composition similar to wild ginseng is longer, and its value will also soar. Linxia ginseng is a unique medicinal material in China. It has a long history of medicinal use and is widely used in clinical practice. my country's earliest medical classic "Shen Nong's Materia Medica" records that undergrowth ginseng has the effects of nourishing the five internal organs, tranquilizing the spirit, calming the soul, re...

AI Technical Summary

Problems solved by technology

The traditional method of detecting the content of inorganic arsenic is cumbersome and difficult to detect the specific content of inorganic arsenic. The application of dual-channel atomic fluorescence spectrometry can more accurately determine the inorganic arsenic in Chinese medicinal materials, which can ensure the safety of human life and promote the development of traditional Chinese medicine. An extremely important research work for Chinese medicine to go to the world