Instrumental method: the estimate value of LOQ is the concentration when the signal - to - noise ratio is 10:1.

仪器分析方法: 一般以信噪比为10:1时相应的浓度作为定量限的估计值,然后配制相应定量限浓度的样品,反复测试来确定.

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LOQ should be determined when the quantitative determination for impurities and degradation products are developed.

杂质和降解产物用定量测定方法研究时,应确定定量限.

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