6Oppenborn J B, Goudie C A. Acute and sublethal effects of ammonia on striped bass and hybrid striped bass [ J ]. J World Aquacult Soc, 1993, 24(1). 90-101.
8Cardolinski P C F C, Hanrahan G, Achterbg E P,et al. Comparison of sample storage protocols for the determination of nutrients in naturai waters[J].Water Research, 2001,35(15) .. 3670-3678.
9Clementson L A, Wayte S E. The effect of frozen storage of open-ocean seawater samples on the concentration of dissolved phosphate and nitrate [J].Water Res, 1992,26.. 1171-1176.
10Avanzino R J, Kennedy V C. Long-term frozen storage of stream water samples for dissolved ortho phosphate, nitrate plus nitrite and ammonia analysis[J], Water Resources Research, 1993(29): 3357-3362.
