1D Processor Data Slate Peak

Delta Tips 2/4 ★ Fit Mixed is the Voigt fitting function which is a combination of Lorentzian and Gaussian functions. ④ Click ④ Push and hold the butt...

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Delta Tips NMDT_0059

Deconvolution Function In Delta software, it is possible to deconvolve overlapping peaks with Lorentzian, Gaussian and a combination of Lorentzian and Gaussian functions. ① Display a spectrum in the 1D Processor or Data Slate window. ② Click the Peak button

to activate the peak picking mode.

③ Pick peaks in the spectrum with the cursor indicated by the Peak symbol

.

Peak indicators (marks) and chemical shifts of the selected peaks have been displayed below the spectrum.

② ③ Click

Peak indicators and chemical shifts Peak Picking

★ If you need to pick up some shoulder or broad overlapping peaks manually, push and hold the Shift key and create the peak.

Shift

+

Selected a shoulder peak (create peak anywhere)

[Shift]key Auto Peak Search function OFF

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Delta Tips ④ Push and hold the

button to display the pull-down menu.

④ Click

⑤ Select a curve fitting function for deconvolution from the menu. Deconvolution has been executed and the fitting result has been shown on the data.

Shortcut Key

★ Fit Mixed is the Voigt fitting function which is a combination of Lorentzian and Gaussian functions. ★ The shortcut key is shown for each fitting function on the right.

Differential spectrum

Green: Original spectrum Red:

Sum spectrum

Yellow: Deconvolved spectrum

Deconvolution of overlapping peaks

★ It is possible to display or hide the deconvolution result from the context menu as follows: Push and hold the right mouse button to display the menu. Then select Options – Peaks – Deconvolve and Deconvolve Sum as shown below.

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Delta Tips ⑥ Select Analyze-Peak Spreadsheet to open the Spread Sheet window. The detailed results for all deconvolved peaks have been summarized in the Spread Sheet table.

★ The Spread Sheet table MD Deconvolution Peak Picking (A: Automatic, M: Manual) Peak position Gauss/Lorentz ratio

Integral value

Peak intensity

Peak half width

★ The result of deconvolution The Chi square value and the standard deviation value are shown in the Delta Console window.

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Delta Tips ★ Recalculation It is possible to set and fix the value of X (peak position), Intensity (peak intensity) and X Diam/J (peak half width) in a deconvolution result in the Spread Sheet window and execute deconvolution again. ⑦ Select a cell in the Spread Sheet window. ⑧ Input a value into the Edit Cell box. ⑧



⑨ Push and hold the right-mouse-button over the cell to display the context menu.

⑩ Select Hold from the menu. The chemical shift value in the cell has turned red.



⑩ ⑪ Select a curve fitting function from the

menu.

The recalculated result has been shown on the data.

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