PDF
Full
Outline
Objective To evaluate the uncertainty in the determinationof thiamethoxam content in corn by high-performance liquidchromatography-tandem mass spectrometry. Methods According to GB/T20770-2008 Determination of 486 Pesticides and Related ChemicalsResidues in Grains-Liquid Chromatography-Tandem Mass Spectrometrymethod, by establishing a mathematical model, the sources of uncertaintywere analyzed and the effects of different sources were measured andcalculated. Results Forthe corn samples with a mass fraction of ${0.282}\mathrm{{mg}}/\mathrm{{kg}}$ ofthiamethoxam, the extended uncertainty was ${0.041}\mathrm{{mg}}/\mathrm{{kg}}\left({P={95}\%, k = 2}\right)$ . Conclusion The main source ofuncertainty affecting the test result is the determination of samplesolution.
PDF
18
7
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
