Abstract Pyrolysis, an effective recycle strategy for resins or plastic containing tetrabromobisphenol A (TBBPA), often lead to formation of more toxic decomposition chemicals. Online collection coupled with off-line analysis for qualitative and quantitative analysis of the residue often induce information loss of these pyrolysis products. In this study, a temperature controllable thermal decomposition device coupled with an ambient mass spectrometry was directly employed for on-line monitoring of the pyrolysis process of TBBPA. Thermal products through debromination, methylation, methoxylation and β-scission have all been detected. Based on the mass spectra of TBBPA decomposition products, the number of bromine atoms and the m/z values, about 8 brominated decomposition products/intermediates have been identified. Temperature played the critical role for the pyrolysis processes. It was found that almost no TBBPA degraded at low temperature (100−150 °C), intensified decomposition happened at about 300 °C and small molecules formed in large quantities at > 450 °C.

中文翻译：

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可控加热装置与常温质谱联用筛选四溴双酚a溴化热解产物

摘要 热解是含四溴双酚 A (TBBPA) 的树脂或塑料的一种有效回收策略，通常会导致形成更具毒性的分解化学品。在线收集与离线分析相结合，对残留物进行定性和定量分析，通常会导致这些热解产物的信息丢失。在这项研究中，温度可控的热分解装置与环境质谱联用直接用于 TBBPA 热解过程的在线监测。已检测到通过脱溴、甲基化、甲氧基化和 β 断裂产生的热产物。根据 TBBPA 分解产物的质谱、溴原子数和 m/z 值，已鉴定出约 8 种溴化分解产物/中间体。温度对热解过程起着关键作用。发现在低温（100-150°C）下几乎没有TBBPA降解，在300°C左右发生剧烈分解，在> 450°C时大量形成小分子。