Microbial compositional and functional traits of BTEX and salinity co-contaminated shallow groundwater by produced water

The raw readsof the 16S rRNA genes of the bacterial V4 and archaeal V4-V5 regions were amplified using the polymerase chain reaction (PCR) with the specific primers of 515F(5`-GTGCCAGCMGCCGCGGTAA -3`)/806R(5`-GGACTACHVGGGTWTCTAAT-3`) for the bacterial community (Guo et al., 2021) and 519F (5`-CAGCCGCCGCGGTAA-3`)/915R(5`-GTGCTCCCCCGCCAATTCCT-3`) for the archaeal community