Objective Collect peanuts and soybeans in Beijing throughvarious channels, determine the content of 26 metal elements among them.Methods The sample is pre-processed by using a microwave to eliminatethe sample, the content of 26 metal elements was determined by inductivecoupling plasma body constituent. Results The detection limit and linearrange of 26 elements can meet the detection requirements, thecorrelation coefficients are above 0.9980 or more, relative standarddeviation (RSD) in the range of 1.1% to 6.8%, the average recovery rateis within the range of 88.8% to 108.7%. In general the content of $\mathrm{K}$ , Ca, and $\mathrm{{Fe}}$ in soybeans far exceedspeanuts, Al in ordinary soybeans is significantly higher than organicsoybeans, the $\mathrm{{Fe}}$ of redpeanut peanuts is higher than white peanut peanuts. $\mathrm{{Pb}},\mathrm{{Cd}},\mathrm{{Cr}}$ with national standards of food safety have not exceeded the standard.Conclusion Through this method, it can be effectively used for themeasurement of 26 metal elements in peanuts and soybeans.
| 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 |