Long-term stability of measurements of the elemental composition of steel using a vacuum atomic emission spectrometer «Grand-Expert»

Abstract

A study of the repeatability and long-term stability of elemental content measurements in a UG20 standard sample using a vacuum atomic emission spectrometer «Grand-Expert» was carried out on time scales of 10 min and 1 h. The values of standard and expanded uncertainty of the results of carbon, chromium, manganese, nickel and silicon determination which characterize the repeatability and long-term stability of measurements were calculated. It has been shown that a vacuum atomic emission spectrometer «Grand-Expert» provides determination of the content of alloying elements in steel with a relative expanded uncertainty of 1 – 2% whereas measurements of carbon content are characterized by higher relative expanded uncertainty of about 3%.

Grand-Expert spectrometer for metal analysis: current status and analytical capabilities

“…Спектрометр «Гранд-Эксперт» уже был представлен [1][2][3][4] как прибор для определения состава сплавов на основе железа, алюминия, меди, титана, магния. Его первая конструкция обеспечивала регистрацию спектров и уверенное определение низких и средних диапазонов концентраций примесных и легирующих элементов в сплавах и чистых металлах.…”