E3S Web Conf.
Volume 206, 20202020 2nd International Conference on Geoscience and Environmental Chemistry (ICGEC 2020)
|Number of page(s)||5|
|Section||Earth Geological Energy Mining And Landform Protection|
|Published online||11 November 2020|
Study on the Quality Control Chart for Determination of Soil Organic Carbon by Instrumental Analysis
1 Key Laboratory of Qinghai Province Physical Geography and Environmental Process, Qinghai Normal University, Qinghai Xining 810008, China
2 School of Life and Geography Sciences, Qinghai Normal University, Qinghai Xining 810008, China
3 Environmental Monitoring Station of Kezilsu Prefecture, Xin jiang Atushi Xinjiang 845350, China
* Corresponding author: email@example.com
【Objective】To ensure that each analysis step is in the monitoring state. The quality control chart is used to control the process of soil organic carbon content determination, and the reasons for drifting or exceeding the allowable value of the result data can be found out in time.【Method】The content of soil organic carbon in quality control samples was determined by instrumental analysis, and the quality control chart was drawn based on the determination data in Excel 2007, which was used for the quality control of the soil organic carbon content determination process.【Result】The control line of the mean control chart was 41.94% ~ 40.51%, and the warning limit was 41. 70% ~ 41. 74%. The control line range of the range control chart is 0.00% ~ 2.75%, and the warning limit is 0.00% ~ 2. 12%.【Conclusion】The quality control chart method is simple to operate,easy to master, and can timely find the abnormal points or abnormal trends of data, which has high application value in test analysis, and can ensure the accuracy of laboratory test results.
© The Authors, published by EDP Sciences, 2020
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