AES Homework Q: Detection Limit Value?

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In summary, the conversation is about a problem involving calculations made by AES. The question is whether to use a 1 or 0 in the formula for a test where the AES readings were below the detection limit. The suggestion is to use a 1 to avoid having a zero in the equation, but it is also suggested to discard that data point.
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Homework Statement



I was given a problem with some calculations that were made by AES.

I know that I am suppose to plug in the equations into some of my beers law formulas but the question given says that in one test the AES readings were below the detection limit. Should I put in a 1 or a 0 for that part of the formula if the readings were below detection limit?

Homework Equations


The Attempt at a Solution


I would assume that you are to put 1 in for this value as to avoid having a zero in the denominator and/or multiplying the whole equation by zero... but who knows.
 
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  • #2
I would discard that datapoint.
 
  • #3


I would recommend consulting with your instructor or referencing any additional instructions or guidelines provided with the problem. In general, when dealing with values below the detection limit, it is common to use a value of 1 or a small positive number instead of a zero, to avoid any mathematical errors. However, it ultimately depends on the specific context and instructions of the problem. It is always best to clarify any uncertainties with your instructor or peers.
 

FAQ: AES Homework Q: Detection Limit Value?

What is the purpose of a detection limit value for AES homework?

The detection limit value is used to determine the minimum concentration of a substance that can be detected by an analytical instrument, in this case, AES (Atomic Emission Spectroscopy). It helps to assess the sensitivity and accuracy of the instrument and the reliability of the results.

How is the detection limit value determined for AES homework?

The detection limit value is determined by measuring the signal-to-noise ratio of the instrument. This involves measuring the signal produced by a known low concentration of the analyte and comparing it to the background noise level. The detection limit value is then calculated based on statistical analysis of these measurements.

Why is the detection limit value important in analytical chemistry?

The detection limit value is important because it helps to determine the lowest concentration of a substance that can be accurately measured. This is crucial for detecting trace amounts of substances in samples, which can have significant impacts on various industries such as environmental monitoring, pharmaceuticals, and food safety.

Can the detection limit value be improved in AES homework?

Yes, the detection limit value can be improved in AES homework by optimizing the instrument's operating parameters, such as the wavelength range, integration time, and sample preparation methods. Additionally, using more sensitive detectors or reducing background noise can also improve the detection limit value.

Are there any limitations to the detection limit value in AES homework?

Yes, there are limitations to the detection limit value in AES homework. The instrument's detection limit is affected by factors such as the sample matrix, interference from other substances, and the sensitivity of the instrument. Additionally, the detection limit value may vary for different elements and compounds, and it is only an estimate and not an exact value.

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