定量NMR中多种检出限评估方法的比较
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陈雷,刘红兵,刘惠丽
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Comparison of Different Approaches for Estimation of the Detection Limit of Quantitative NMR
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Lei CHEN,Hong-bing LIU,Hui-li LIU
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表1 不同采样次数下，校准曲线法中的回归参数及依据不同公式计算的检出限
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Table 1 Regression parameters and limits of detection calculated by different equations with various numbers of scans by calibration curve approach
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| | 16 | 32 | 48 | 64 | 96 | 128 | | a | 1.0083 | 1.9491 | 3.0226 | 4.0361 | 6.1182 | 8.2802 | | b | 0.0353 | 0.0708 | 0.1057 | 0.1410 | 0.2110 | 0.2799 | | R2 | 0.9944 | 0.9959 | 0.9971 | 0.9979 | 0.9982 | 0.9985 | | Sy/x | 0.2000 | 0.3450 | 0.4298 | 0.4906 | 0.6853 | 0.8204 | | XC/(μmol/L) | 12.0 | 10.3 | 8.6 | 7.4 | 6.9 | 6.2 | | XD(2)/(μmol/L)* | 23.6 | 20.3 | 17.0 | 14.6 | 13.6 | 12.3 | | XD(3)/(μmol/L)* | 23.4 | 20.1 | 16.8 | 14.4 | 13.4 | 12.1 | | XD(4)/(μmol/L)* | 24.0 | 20.7 | 17.3 | 14.8 | 13.8 | 12.4 | | XD(5)/(μmol/L)* | 23.7 | 20.5 | 17.1 | 14.7 | 13.7 | 12.4 | | XD(6)/(μmol/L)* | 23.8 | 20.5 | 17.1 | 14.7 | 13.7 | 12.4 |
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