Abstract: A wide range of investigation was launched in surface water, drink water, sea water, rain water, water vapor for the present of ³H in the environment surrounding Taishan and Yangjiang NPPs during 2010-2011. Water samples were electrolyzed with homemade electrolytic enrichment device before measurement. It has been shown the activity concentrations of ³H are, respectively, 0.23±0.04 Bq/L in surface water, 0.22±0.04 Bq/Lin drinking water, 0.22±0.06 in sea water, and 0.25±0.08 Bq/L in rain water, nearly at the same level.³H activity concentrations in water vapor is 0.37±0.17 Bq/L,negatively related to air humidity.

Key words: Environment, ³H, Electrolysis, Yangjiang andTaishan NPPs