SUPER MICROWAVE DIGESTION&ICP-MS | Sensitive detection of low-content arsenic, super microwave digestion-ICP-MS to control the quality of industrial sulfur

Industrial sulfur produced by gas recovery in petroleum refineries is an important raw material for chemical, pharmaceutical, rubber, paper, food and other industries . As the arsenic content restricts the quality grade and use of sulfur, it has become an important item for routine detection in industrial sulfur. High-quality industrial sulfur requires that the arsenic content be less than or equal to 0.0001% . 

The traditional method usually uses microwave digestion atomic fluorescence spectrometry to measure arsenic in industrial sulfur. Low-level arsenic is easily not detected, which cannot meet the quality control requirements for high-quality sulfur in production. Therefore, it is necessary to establish a sensitive and reliable method for the determination of low levels of arsenic in industrial sulfur. 

This application center uses microwave to digest sulfur, and ICPMS method to determine the content of arsenic in the digestion solution . The method has short analysis time, less reagent consumption, simple operation, good sensitivity and accuracy, and the relative deviation of parallel determination results is ≤4.9%, which is far less than ≤30% specified in the standard. It can be used as an analysis method for arsenic content in industrial sulfur.