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Objective To establish an inductively coupled plasma massspectrometry (ICP-MS) method for the determination of $\mathrm{{Pb}},\mathrm{{As}},\mathrm{{Hg}},\mathrm{{Cd}},\mathrm{{Hg}}$ in astragali radix, crataegi fructus, lycii fructus, lonicerae japonicaeflos and glycyrrhizae radix et rhizome. Methods After microwavedigestion of forty-five batches of samples, the contents of five heavymetals in commom TCM decoction pieces were determinationed by ICP-MS.The RF power is 1550 W. Kinetic Energy Discrimination mode is used. Thecollisional gas was Helium.The carrier gas was Argon with ${0.8}\mathrm{\;L}/\mathrm{{min}}$ , theplasma gas flow rate was ${14.0}\mathrm{\;L}/\mathrm{{min}}$ . Results Five heavy metal elements showed a good linear relationships $\left({r >{0.999}}\right)$ , whoserecoveries were 84.6%~115.3%, the detection limit was ${0.0001}\sim {0.0140}\mathrm{{mg}}/\mathrm{{kg}}$ .Among the 45 batches of samples, there were individual samples oflonicerae japonicae flos that exceeded the limit. Conclusion This methodis simple, efficient, stable and reliable, which can be used for thequality study of a variety of heavy metals, and provides more basis forits quality control and scientific supervision.
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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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