Inductively coupled plasma mass spectrometry (ICP-MS) is a highly complex multi-element analysis technique that has been increasingly used for trace analysis in pharmaceutical, food, beverage, and environmental industries, as well as in analytical laboratories. ICP-MS technology is capable of analyzing detection limits as low as sub-ppt (one trillion), and such low detection limits can only be achieved in a clean room environment. Due to the use of ICP-MS for trace element analysis, water is required early in the test, so it is clear that any contaminants in the water will affect the entire analysis process. Therefore, the experimental water must be of analytical grade high purity water, such as: ASTM Type I water. The purpose of the series of analytical experiments described below is to ensure that the ultrapure water produced by the Sartorius Arium pro UV water system is of high purity (no metal elements are detected in this study and therefore contain no metal elements) and There is no worries on ICP-MS equipment for the analysis of trace elements. The technical principle of ICP-MS ICP technology is based on the principle of atomic emission spectroscopy. The samples are decomposed into positively charged ions according to their mass-to-charge ratio in a high temperature argon plasma, and then subjected to detection analysis by a mass spectrometer. In principle, ICP-MS consists of the following steps: sample preparation and injection, aerosol generation, argon plasma ionization, mass fractionation, detection system identification and data analysis (according to Worley and Kvech [1]). experimental method The experiment was carried out in a Class 1 clean room using Sartorius' arium pro UV pure water system. Samples were taken from the water producing end (no end filter installed) and analyzed by the ICP-MS system 7500cs (Agilent) [2]. Experimental result Trace element analysis requires the use of high purity reagents and/or solvents and water to ensure that the accuracy of the ICP-MS instrument is not compromised. For example, pure water is required to create instrument blanks, calibration curves, and standard solutions. Pure water is also necessary for sample preparation, so the experimental water must be such that the relevant elements cannot be detected. The standard solution of the elements described below is injected into the ICP-MS system along with an instrument blank (0 value) to generate a calibration curve. The examples shown in Figures 3 and 4 are calibration curves for lead (Figure 3) and chromium (Figure 4), which are plotted against signal values ​​and standard solution concentrations (ppt levels). The concentrations of all the elements in Table 1 were obtained from the corresponding standard curves plotted. in conclusion Under the given test conditions, elements of different ng/l (ppt) levels (listed above) are significantly below the detection limit. In order to obtain such high quality water, all system components, including piping, are specifically designed to meet the needs of ICP-MS applications and mass production of arium pro UV equipment. The test results also show that the water produced by the arium pro UV system is especially suitable for ICP-MS technology applications because it completely avoids errors or risks caused by the presence of trace elements. These are prerequisites for elemental trace analysis in the pharmaceutical and environmental industries as well as in analytical laboratories. Sartorius arium® series ultra-pure water machine - the achievement of your "great gift" activity is in full swing! Full text view References / More Information [1] Information published by Worley, Jenna and Kvech, Steve on the Internet. 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[2] Reinstwasseranalyse am Auslauf der “arium pro UV Anlage†ATU GmbH-Analytik für Technik und Umwelt, Herrenberg, 2011