线性最小二乘法在环境空气检测领域能力验证结果评价中的应用

The application of the liner least-squares method for the detection of environmental air in proficiency testing

对线性最小二乘法在环境空气检测领域能力验证结果统计评价的应用开展了研究,并比较了线性最小二乘法与En值法的评价结果。研究结果表明,最小二乘法和En值法得出的评价结果相似。最小二乘法能够对能力验证数据统计结果进行有效的评价,并可以减少因实验室不能正确评估测量不确定度对结果评价的影响。

The detection of environmental air is one of environmental monitoring, and proficiency testing is important way to assure the reliability and consistence of inspection results. The application of the linear least- squares method for the detection of environmental air in proficiency testing is studied. In the paper, two statistical methods of linear least-squares and En ratio are used for the proficiency testing to verify their ability. The comparison results are analyzed, and the conclusions obtained from linear least-squares and En ratio methods are similar. The linear least-squares method can be used for testing the proficiency of environmental air testing laboratory, to reduce impact of the inaccuracy uncertainty on measurement.