Type standardization is the calibration of the same type of alloy. It is a section on the calibration curve. The class control sample and the sample should be of the same type, and the composition content is the same, including the alloy structure, such as lead-bismuth alloy for the positive plate alloy. Samples cannot be controlled by lead-calcium alloys, and calcium master alloys cannot be controlled by ordinary lead-calcium alloys. In the case of indoor environment and instrument state, the sample can be analyzed by simply adopting the class control coefficient. The specific operation is based on the SPCTRO M9 direct reading spectrometer.
1. In the measurement window, press the F8 key to perform type standardization. In the “Available Sample†sample field of the “Measure Type Standardization Sample†measurement window that pops up, list the type of standardized sample names that can be selected. Click the sample name to select the type of standardized sample name you want, and the background will change. It is automatically transferred to the input area of ​​the “Select Sample†sample bar and confirmed by pressing the OK button.
2. After selecting the type standardized sample, the “Type Standardize (measure sample)†standardization (measurement sample) dialog box appears on the screen. Press the Yes button to enter the measurement window.
3. Excuse several waste samples in the measurement window first, and the type standardization operation can be performed after the instrument is stable. Press the F2 key to trigger the prepared standard type 2 to 3 points. If there is a bad result, you can delete it with the Delete key. If the accuracy meets the requirements, press F9 to automatically save the memory. After a sample data table appears in the middle of the screen, press the OK button to end the type standardization work. After the control sample is finished, the first line on the upper left of the screen must appear “Type connected concentration→ The sample name "type content, at this time, the control sample is excited once again, and the analytical value is consistent with the chemical value to indicate that the type standardization is successful.
4. After changing the analysis program (including recalling the analysis program) or analyzing different grades in the same analysis program, you must press Shift+F8 to recall the corresponding control factor. Eight. How to draw and extend the working curve Since the measuring range of some elements in the instrument can't meet the production needs of the enterprise, to extend the curve and expand the measuring range, first select the standard with high accuracy , precision and uniformity to collect the light intensity. Ratio, and the required standard can not be less than five. The maximum Cd in a typical instrument is 0.54%, and the maximum is 2%, so the working curve of cadmium needs to be extended.
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