8Ohanian E V, et al. Trace Subst. Environ. Health, 1983, 17(1): 109.
9XIA Yuan-xun(夏元洵).Toxicity Book of Chemical Substance(化学物质毒性全书).Shanghai: Shanghai Science and Technology Literature Publishing Company(上海:上海科学技术文献出版社),1991.109.
10State Environmental Protection Administration(国家环保局编).Analysis Methods of Water and Wastewater Monitoring. the Fourth Edition(水和废水监测分析方法.第4版).Beijing: China Environmemal Science Publishing Company(北京:中国环境科学出版社), 2002.311.