Determination of Chlorinated Paraffins by Bromide-Anion Attachment Atmospheric-Pressure Chemical Ionization Mass Spectrometry

作者：Yuan, Bo^*; Benskin, Jonathan P.; Chen, Chang-Er L.; Bergman, Ake

来源：Environmental Science and Technology Letters, 2018, 5(6): 348-353.

DOI：10.1021/acs.estlett.8b00216

• SHORT-CHAIN
• ENVIRONMENTAL-SAMPLES
• FLAME RETARDANTS
• TEMPORAL TRENDS
• CONGENER GROUPS
• SEWAGE-SLUDGE
• DECONVOLUTION
• EXPOSURE
• CHINA
• PATTERN

A novel method for the quantitative determination of chlorinated paraffins (CPs) was developed using bromide-anion attachment atmospheric-pressure chemical ionization mass spectrometry (APCI-MS). Bromoform was used to enhance ionization of CPs. Near exclusive formation of stable bromide adduct ions ([M + BR](-)) enabled accurate detection of individual CP congener groups (CnClm) with only a moderate-resolution quadrupole time-of-flight mass spectrometer. Furthermore, the method was free from interference commonly observed with chloride-anion attachment methods (e.g., decomposition ions [M + Cl - HCl](-)) that require deconvolution. Together with a CnClm-response-factor algorithm for quantifying short-chain CPs and a CnClm-pattern-reconstruction algorithm for quantifying medium- and long-chain CPs, method applicability was demonstrated on biota and sediment samples. These data were generated significantly faster and with improved selectivity and sensitivity versus those of conventional measurements by chloride-anion attachment APCI-MS.

• 出版日期2018-6
• 单位华南师范大学