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目的评估工作场所空气中苯酚检验结果的不确定度。方法应用测量不确定度评定方法分析测定过程中不确定度的来源,识别出其中的主要来源。结果不确定度的主要来源:(1)测量重复性u1;(2)c的标准不确定度(即校准曲线校准产生的A类不确定度)u2;(3)V0的标准不确定度(采样体积产生的不确定度)u3;(4)苯酚标准储备液的标准不确定度u4;(5)稀释过程引入的标准不确定度u5;(6)取样体积引入的标准不确定度u6;(7)取样均匀性引入的标准不确定度u7;(8)试剂空白导致的标准不确定度u8;(9)原子荧光光度计引入的不确定度u9;(10)吸收液体积引入的不确定度(装入吸收液u10。结论运用该不确定度评定方法对测定过程中关键环节的识别,将有助于检测人员重点关注关键环节的质量控制,以更有效地提高检测工作的质量。
Purpose To assess the uncertainty of the phenol test results in the workplace air. Methods The method of measurement uncertainty was used to analyze the sources of uncertainty in the determination process and identify the main sources. Results The main sources of uncertainty are: (1) measurement repeatability u1; (2) standard uncertainty of c (ie type A uncertainty resulting from calibration curve calibration) u2; (3) standard uncertainty of V0 (4) the standard uncertainty of the standard stock solution of phenol u4; (5) the standard uncertainty u5 introduced in the dilution process; (6) the standard uncertainty introduced by the sampling volume u6; (7) standard uncertainty introduced by sampling uniformity u7; (8) standard uncertainty due to reagent blank u8; (9) uncertainty introduced by atomic fluorescence photometer u9; (10) Confirm the degree (load the absorbing fluid u10. Conclusion The use of the uncertainty assessment method to identify the key links in the measurement process will help the testing staff to focus on the key aspects of quality control, in order to more effectively improve the quality of the testing work.