硫化氢含量在不同分析仪器之间的比对分析

Comparative analysis of hydrogen sulfide content between different analytical instruments

针对实验室硫化氢检测有国产硫化氢测试仪和美国安捷伦7890A气相色谱仪FPD检测器2套测试系统,为满足生产的需要,为实验室可以提供优良的检验品质,建立完整的质量体系及控制系统,对硫化氢检测2套测试系统的测定结果一致性进行比对,分别在2台仪器上测定硫化氢的标气和待测样,分析比对两者测定的结果。以同1个硫化氢标气作为质控物,再以另外一些样品气(只含有硫化氢和氮气组分)作为待检样,分析比对2个测试系统的测定结果,以前者的测定值为观察值,以后者为预期值,经统计学处理,由此获得安捷伦7890A测试系统所得测试值的截距和k值为校正因子,校正安捷伦7890A的检测结果。实验结果表明,2台仪器经过测定同1个样品的比对、校准取得的硫化氢含量测定结果高度一致,可以证明实验能力,实现实验室标准化,也能满足生产的需要。

For laboratory hydrogen sulfide detection, there are two test systems, domestic hydrogen sulfide test instrument and American Agilent 7890 A gas chromatograph FPD detector. In order to meet the needs of production, provide excellent inspection qualityfor the laboratories, establish a complete quality system and control system, the determination result consistency of the two sets of test system for hydrogen sulfide detection was compared. The hydrogen sulfide content in standard gas and sample were determind by the two instruments respectively, and the determination results were analyed and comparied. With one hydrogen sulfide standard gas as quality control material, with other samples gas( containing only hydrogen sulfide and nitrogen components) as tested samples, the test results of the two test systems were analyed and compared; with determination values of the former as the observed values, the latter as the expected value, the intercept and K value of the test values were determined by Agilent 7890 A test system were obtained by statistical processing in order to correct the detection result of Agilent7890 A. The experimental results show that through comparing and adjusting of the determination results of the same sample by two instruments, the achieved results are highly consistent for determination of hydrogen sulfide, it can prove the experimental ability, realize the standardization of the laboratory and meet the needs of production.