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How do you draw the calibration curve for estimation of potassium in soil using flame photometry?
Wiki User
∙ 16y ago
First you need to run a set of samples of known concentration through the detector. They need to be of a sufficient different in concentration in order that they can create a linear line.
You then need to plot about 5 or 6 of these samples onto a graph and then mark the line of best fit (basically the best place where a straight line fits). You can then work out the equation of this line by first finding the gradient (m=y2-y1/x2-x1) and slotting that into y=mx+c (c will most likely be 0). You can then run your potassium sample through and plot the position on the y-axis (whatever technique it measures; absorption etc.) and then draw a straight line to the y=mx+c and then a line down towards the x-axis (concentration). This will allow you to measure the concentration as it will be the same as the distance that you measure with a ruler (assuming you make the scale the same)
Wiki User
∙ 16y ago
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Deposits of sediment that run along the shore?
often salt or potassium in other cases
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a reflecting curve
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A lenses that curve outward is convex.A lenses that curve inward is concave.
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What is the first step in conducting improvement curve analysis?
histpry
Would it be reliable to use the simple calibration curve method for the determination of potassium by flame photometry in seawater?
For a calibration curve method it is required that the composition (matrix) of standard and sample is nearly identical.when it is impossible to match the composition of the sample with the standard.we use standard addition method.
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Why calibration curve method is more reliable as compared to a single point method?
Why Calibration curve method is more reliable than single point method?Read more: Why_Calibration_curve_method_is_more_reliable_than_single_point_method
How do you calculate the limit of detection from a calibration curve?
See this link.
What are the ideal characteristics of a calibration curve?
i was suppose to get the anwer from yuo
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The calibration curve for an orifice meter will depend on the size of the orifice, the size of the pipe and the pressure loss over the meter. Typical calibration curves have pressure (or head) loss on the vertical (y) axis and flow rate on the horizontal (x) axis.
Can you give me a conclusion on the solubility curve of potassium nitrate?
whats the conclusion of solibility of potassium nitrate
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With using a standard addition method the influence of matrix presented in sample is reduced.But standard addition corrects only for multiplicativeinterferences (changes in calibration curve slope), not additive interferences (changes in calibration intercept, such as spectral interferences). See http://terpconnect.umd.edu/~toh/models/Bracket.html
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You need a calibration curve for D-glucose
What does chromatography help find?
Chromatography can help separate individual components of a complex mixtures AND quantify them with the use of a calibration curve.
If all the SCN were not converted completely to FeNCS when the calibration curve was prepared would this raise or lower the value of Keq?
Sorry, since it is unknown of what experiment or laboratory analysis you're talking about, this question is unanswerable. It also is not accurate enough: FeNCS is not a good formula, SCN is an anion: SCN- and the sentence:".... when the calibration curve was prepared(??) would this raise or lower the value of Keq" is difficult to interprete as such a curve is not adequately described.
What is the difference between calibration sensitivity and analytical sensitivity?
Calibration Sensitivity(m): slope of acalibration curve at the consentration of interest y=mx+n m:slope(Calibration Sensitivity) x:concentration n:signal of blank Analytical Sensitivity: response to noise ratio A.S=m/S m:slope S:standard deviation of the measurement
