JIANG Haining¹,GU Hongbiao¹,YU Yilun²,CHI Baoming¹,WANG He¹,ZHOU Jingwei¹
(1. Institute of Disaster Prevention, Sanhe, 065201 China;
2. Institute of Wetland Research, China Academy of Forestry, Beijing 100091 China)

Abstract: This paper analyzes chemical and isotopic composition of the four types (natural mineral water, pure water, mineral water, soda water) and 36 kinds of brands of bottled drinking water, studies composition characteristics of hydrochemical and isotopic, hydrogeochemistry action and its water supply cycle characteristics. Results show that the TDS of bottled water fluctuates apparently(7.26~638.23 mg/L), and the TDS of purified water and mineralized water are relatively low (7.26~47.5 mg/L). The hydrochemical type is mostly HCO3-Na, followed by the HCO3-Ca and the HCO3-Ca·Na.Gibbs graph and the ratio coefficient of the main ions reveal the water chemistry effect during the formation of drinking water sources. The composition of hydrogen and oxygen isotopes of bottled drinking water varies greatly (δD -160.21‰~-43.96‰, δ18O -20.91‰~-6.00‰).The composition of isotopes is equally allocated around our country’s Meteoric Water Line, showing that the majority of water sources is coming from rainwater. The hydrogen and oxygen isotopes are scarce in the water sample of the Southwest of China (δD -160.21‰~-83.83‰,δ18O -20.91‰~-11.58‰), but are rich in the water samples of southeast and north regions (δD -79.68‰~-43.96‰,δ18O -10.9‰~-6.00‰).In addition to the northeast and northwest areas, deuterium excess (d value) is lower than the average value of 10‰ of global rainfall, which reflects that the variety of water recharge of water sources is affected by evaporation. Altitude and temperature are highly related with hydrogen and oxygen isotope, as that the higher the altitude is and/or the lower the temperature is, the lower the δ18O of bottled water will be.

Keywords: bottled drinking water; water chemical characteristics; isotope; meteoric water line; factor

EARTH AND ENVIRONMENT Vol. 43, No.4, Tot No.306, 2015, Page 403-414