Objective To evaluate the uncertainty of determination of lead in organic fertilizer by inductively coupled plasma mass spectrometry. Methods The factors affecting the determination of lead content in organic fertilizers by inductively coupled plasma mass spectrometry were analyzed, including determination precision, pretreatment, preparation of standard solution, standard curve fitting, etc. The results of the uncertainty and the expanded uncertainty were calculated. Results Under the 95% confidence interval, When the lead concentration of organic fertilizer sample was 0.782 mg/L, the final calculated expanded uncertainty was 0.0172 mg/L(k=2). Conclusion This method is suitable for the uncertainty evaluation of the determination of lead in organic fertilizers by inductively coupled plasma mass spectrometry.
标题：电感耦合等离子体质谱法测定有机肥中铅含量的不确定度评定
英文标题：Uncertainty evaluation of determination of lead in organic fertilizer by inductively coupled plasma mass spectrometry
