Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM UOP1022
• Năm ban hành / Publication date: 2018
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Determination of Trace Carbonyl Sulfide and Hydrogen Sulfide in Polymer Grade Ethylene & Propylene by Gas Chromatography Mass Spectrometry
• Số trang / Page: 13

Phạm vi áp dụng / Scope of standard

This method is for determining trace carbonyl sulfide and hydrogen sulfide in high purity polymer grade ethylene and propylene gas or liquid using a gas chromatograph equipped with a mass spectrometer run in selected ion monitoring mode. The specific instrument is preconfigured and is capable of determining typical impurities in polymer grade ethylene or propylene, however this method only outlines the procedure for determining carbonyl sulfide and hydrogen sulfide. Carbonyl sulfide and hydrogen sulfide elute on the propylene tail but are readily extracted as unique ions with selected ion monitoring. The lower limit of quantitation for each component is 0.05 mol- ppm.