Quality detection and hygienic analysis of reverse osmosis desalinated seawater in islets

Objective:To explore the quality of reverse osmosis desalinated seawater in the islets and the consequences for islanders of long-term drinking such water.Methods: Water quality was detected following "Standard examination methods for drinking water"(GB/T5750-2006).Then the detection result of reversed osmosis desalinated water in the islets were compared with the requirements in "Standards for drinking water quality"(GB5749-2006) and "Hygienic standard of mineralization for drinking water with low mineral level"(GJB1335-92).Results: The boron concentration of desalinated seawater by reverse osmosis device in the islets was 0.68 mg/L,which was 1.38 times as many as tolerance in GB5749-2006.And magnesium was 6.30 mg/L,calcium was 5.65 mg/L,sulphate was 5.52 mg/L,bicarbonate was 4.0 mg/L,which were lower than recommendable concentration in GJB1335-92.Conclusion: The results showed long-term drinking reverse osmosis desalinated seawater could cause some negative consequence for islander health.It was suggested that boron should be further removed,and other elements such as magnesium,calcium,sulphate and bicarbonate should be supplemented suitably in the islets desalinated seawater.