Full
Outline
To establish a method for simultaneous determination of Cr, Cu, As, Cd, Hg and Pb in Sanghuangporus spp. by microwave digestion-inductively coupled plasma mass spectrometry.
Nitric acid was used as the only digestion reagent, the appropriate proportion of Au element was selected as mercury stabilizer, and 103Rh was used as the single internal standard element for correction.
The correlation coefficients of the 6 kinds of heavy metal elements were not less than 0.999, and the method limits of detection were 0.00009-0.00090 mg/kg.The relative standard deviations (RSDs) of each element content in the sample ranged from 1.79% to 7.26%, and the recoveries of 2 different concentrations ranged from 92.2% to 105.2%. The certified reference material of astragalus(GSB–19) was detected by this method, and the measured values were all within the range of standard values, with RSDs ranging from 1.54% to 6.04%.
The method is accurate, reliable, rapid, efficient and reagent saving, and is suitable for the analysis and detection of heavy metal elements in Sanghuangporus spp..
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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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