水力压裂废水的精确质量数分析： 利用 LC/Q-TOF-MS 对聚乙二醇表面活性剂进行鉴定

A combination of UHPLC followed by LC/Q-TOF-MS was used to detect suites of polyethylene glycol compounds (PEGs) that occur in flowback water samples from hydraulic fracturing. The Kendrick Mass Defect was applied to differentiate the various adducts within a suite of PEGs. A database of the accurate masses along with their retention times by UHPLC has been designed to enable rapid and accurate analysis of either groundwater or flowback samples from hydraulic fracturing. Forty PEGs and their various adducts and multiply-charged ions can be identified in less than 2 minutes of computer time.