- Capability of cation exchange technology to remove proven N-nitrosodimethylamine precursors.
Capability of cation exchange technology to remove proven N-nitrosodimethylamine precursors.
Journal of environmental sciences (China) (2017-08-05)
Shixiang Li, Xulan Zhang, Er Bei, Huihui Yue, Pengfei Lin, Jun Wang, Xiaojian Zhang, Chao Chen
PMID28774624
ABSTRACT
N-nitrosodimethylamine (NDMA) precursors consist of a positively charged dimethylamine group and a non-polar moiety, which inspired us to develop a targeted cation exchange technology to remove NDMA precursors. In this study, we tested the removal of two representative NDMA precursors, dimethylamine (DMA) and ranitidine (RNTD), by strong acidic cation exchange resin. The results showed that pH greatly affected the exchange efficiency, with high removal (DMA>78% and RNTD>94%) observed at pH<pk