灵芝孢子粉破壁率分析方法的测量不确定度评估及方法改良与优化

目的：对中华人民共和国农业行业标准NY/ T1677-2008《破壁灵芝孢子粉破壁率的测定》测定灵芝孢子粉破壁率测量不确定度进行评定。分析产生不确定度的主要来源，优化方法为有效地控制用NY/T 1677-2008标准测定灵芝孢子粉破壁率提供可靠的理论依据。方法：参照NY/ T1677-2008标准，分析了整个测定过程产生的不确定度。通过对灵芝孢子粉破壁率分析方法进行检讨，并对分析方法进行改良与优化。结果：实验给出灵芝孢子粉破壁率的扩展不确定度为29.8%（k=2）。对分析方法进行优化后，灵芝孢子破壁率的扩展不确定度下降至13.0%（k=2）。结论：优化后的方法不确定度水平降低，分析方法的准确性提高。

Objective: To evaluate the measurement uncertainty of sporoderm-broken rate of Ganoderma spores according to the China Agriculture Professional Standard NY/T1677-2008 "Determination of sporoderm-broken rate of Ganoderma spore product".By investigating the major sources of uncertainty,optimize the method this study provides the basis for the effective control of sporoderm-broken rate determination by standard NY/T1677-2008. Methods: Measurement uncertainty in sporoderm-broken rate measurement was evaluated throughout the production process.Based on the results, the method for determination of sporoderm-broken rate was further modified and optimized. Results: The relative expanded uncertainty for sporoderm-broken rate was found to be 29.8% (k=2).The relative expanded uncertainty by modified and optimized method was lowered to 13.0% (k=2). Conclusion: After method optimization,the uncertainty leve was decreased,and the accuracy of analysis results was increased.

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