Heavy Metal Element Testing in Medicine
The Terra600 hand-held energy dispersive X-ray fluorescence spectrometer (EDXRF) can simultaneously detect a wide range of elements.
Heavy Metal Element Testing in Medicine In the current medical and health care industry, traditional Chinese medicine still occupies a relatively important position. With the modernization of traditional Chinese medicine and the increasing use of traditional Chinese medicinal materials in health food, the problem of heavy metal pollution during the cultivation and processing of traditional Chinese medicinal materials has become more and more prominent. Heavy metal elements contained in medicinal materials and finished products can cause harm to human health and adversely affect the development of the industry. Therefore, in the production process of traditional Chinese medicine products, the solution to the problem of heavy metal content detection and comprehensive control.

The international standard ISO 18864 specifies the detection method of heavy metal content in Chinese medicinal materials. The analysis methods of heavy metal content involved in the standard are mainly atomic absorption spectrometry (AAS) and inductively coupled plasma method (ICP). These analysis methods need to be carried out in the laboratory. The chemical treatment of the sample and then the analysis will affect the work efficiency of detection and analysis, and it is difficult to achieve real-time on-site analysis.

The Handheld XRF Is an Efficient Method to Screen the Heavy Elements in Medicine

The hand-held energy dispersive X-ray fluorescence spectrometer (EDXRF) can simultaneously detect a wide range of elements. It has the advantages of fast analysis speed, easy operation of the instrument, and simple sample processing. It can realize the quantitative analysis of heavy metal elements in engineering. Due to the above advantages, the handheld EDXRF spectrometer can play an important role in the cultivation, processing and inspection of Chinese medicinal materials.

Medicine Sample Testing with AXR Scientific Handheld XRF Analyzer Terra600

The instrument used is an AXR Terra 600 series handheld XRF analyzer, considering the nature of the sample, and using the preset mode of the instrument for sample analysis. During the analysis, different types of samples were detected, and the detection time of a single sample was 100s.

The analysis used 4 different types of powdered TCM samples. When the samples were made, heavy metal powders with different contents were added to them. During the test, the sample is filled into a plastic container and used after being compacted. The original state of the sample and the state during detection are shown in Figure 1 and Figure 2, respectively.

The 2020 edition of the Chinese Pharmacopoeia "0212 General Rules for the Verification of Medicinal Materials and Decoction Pieces" restricts the content of lead (Pb), mercury (Hg), cadmium (Cd), arsenic (As), and copper (Cu) in botanical medicinal materials and decoction pieces. The limit values are shown in Table 1. The series of analyzers have the detection limit below the limit content, can effectively carry out the relevant compliance detection, and have the ability of quantitative analysis.

In the test, the four types of samples were tested according to the above basic conditions, and the test results are shown in Table 2. Those with no data in the table are not detected. The test results show that the instrument has good accuracy and small detection error, and can accurately reflect the heavy metal content in each sample.


The series analyzers have good performance, reliable analysis results and accurate quantitative analysis results, and can be used as important analysis tools in the detection and comprehensive control of heavy metals.

AXR Scientific is a high-tech manufacturer focusing on the development and application of X-ray technology products. It is committed to becoming a world-class supplier of X-ray industrial inspection solutions.AXR Scientific currently offer handheld XRF analyzer, handheld alloy analyzer, handheld soil analyzer, handheld lithium battery analyzer, precious metal analyzer, coating analyzer, gold analyzer and online XRF analyzer etc. to global customers. We keep serving global customers in the fields of machinery manufacturing, metal processing, aerospace, petrochemical, mining and geology, food safety, environmental protection, scientific research and etc. AXR Scientific keeps improving product performance and user experience with R&D advantages and innovative designs, and continues to provide global users with reliable X-ray measure solutions to solve various challenges from routine testing tasks to complex customized measure requirements. To contact us, please send email to market@axr-scientific.com

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