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Outline
This article mainly analyzed and discussed the regulations on heavy metal residue limits for plant medicinal materials in the Pharmacopoeia of The People's Republic of China，understood the existing heavy metal limit regulations in the Pharmacopoeia of The People's Republic of China and provided reference for the revision of heavy metal residue regulations for plant medicinal materials in the future and corresponding countermeasures to promote the development of the medicinal value of plant medicinal materials.
The main research methods used in this project were literature research，statistical analysis and descriptive research，searching the literature for statistical analysis.
The Pharmacopoeia of The People's Republic of China has been conducting heavy metal testing since2000. The 2005 edition clearly defined the heavy metal content in plant medicinal materials and with the increase of years，we can add other plant medicinal material while maintaining the original heavy metal content. The heavy metal limits in the The Pharmacopoeia of The People's Republic of China are consistent with the Green Industry Standard for the Import and Export of Medicinal Plants and Preparations，and their values are stricter compared to the heavy metal limits of other countries and regions.
The formulation of heavy metal residue limit standards for plant medicinal materials in the Pharmacopoeia of The People's Republic of China is gradually being improved and perfected. The analysis and research of the standards for heavy metal residues in plant medicinal materials is a detailed explanation of the residual amount，stability，accuracy，objectivity and other characteristics of heavy metals in plant medicinal materials as reference indicators for monitoring and national basic medical and health standards.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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