Simultaneous determination of stable chlorine and bromine isotopic ratios for bromochlorinated trihalomethanes using GC-qMS

Towards improved characterization of the fate and impact of hydraulic fracturing chemicals to better secure regional water quality

“…δ 37 Cl and δ 81 Br) CSIA could potentially serve as a unique tool to characterize both halogenation and dehalogenation transformations of different HF chemicals in high-saline environments. 18,19…”

“…d 37 Cl and d 81 Br) CSIA could potentially serve as a unique tool to characterize both halogenation and dehalogenation transformations of different HF chemicals in highsaline environments. 18,19 Persistent, mobile and toxic substances Underground injection of HF uids raises continuous concerns for regional shallow groundwater aquifers, since fracturing chemicals might cause groundwater contamination. Among the hundreds of HF chemicals, special attention should be paid to compounds with high persistence (P) and aqueous mobility (M), particularly toxic ones (which are referred to as PMT substances), which are slow to degrade and can rapidly spread in the subsurface.…”