主题:【求助】关于气相色谱检测器的检出限

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ciaclin
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原文由 zlf99056 发表:
是最低检出限,即单位时间内载气携带被测物质进入检测器的克数 我们刚做完这个问题


One more question, (FID)

The FID detection limitation ( g/s)  is : 2NW/A.

N is the Baseline noise (A)
W is the Mass of n-Hexadecane (g)
A is the Average area amount of n-Hexadecane ( A• s)

So, how to calculate the Baseline Noise (A)?

(1) The Noise (N: peak to peak) is measure over a representative section of baseline equal to 20 times the width of the analyte peak ( Wi).

(2) When the instrument is under optimal conditions that produce a continuous, electronic output, the Noise ( N ) may be measured from the Peak to Peak Variation ( N: peak to peak) in the baseline signal.

N = N:peak to peak.





S K
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zjq198203
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