Brief Reports
Copyright ©The Author(s) 2000.
World J Gastroenterol. Aug 15, 2000; 6(4): 572-576
Published online Aug 15, 2000. doi: 10.3748/wjg.v6.i4.572
Table 5 Contrast in water quality before and after the change in water
Test item (ppm)NO2-Humic acidCODDONH4
10.02240.5344.246.100.34
20.01060.050.348.210.07