Abstract：In order to investigate heavy metals in phosphorus fertilizers in China, 159 samples of phosphorus fertilizers including imported fertilizers and domestic fertilizers were collected from fertilizer markets, and the contents of heavy metals were determined by ICP-MS and AFS after microwave digestion. The results showed that the phosphorous fertilizers contained certain amount of heavy metals, and there was great variability in the contents of heavy metals. The mean contents of Cd, Cu, Zn, Cr, Pb, Ni, As and Hg were 0.77, 35.6, 102.7, 24.1, 16.6, 15.4, 19.4 and 0.08 mg·kg-1 fertilizer, respectively; based on the calculation of P2O5, the mean contents of above heavy metals were 4.48，258.4，767.4，190.0，151.3，134.5，155.8 and 8.79 mg·kg-1 P2O5, respectively. The contents of heavy metals Cd, Cr, Pb, As and Hg in the tested samples accord with the ecological index of arsenic, cadmium, lead, chromium and mercury for fertilizers (GB/T 23349-2009), with the exception of Cd in one imported sample of diammonium phosphate and As in one sample of mono-ammonium phosphate. Analyzing the contents of heavy metals in imported fertilizers, the Cd contents in imported fertilizers was ranged from 0.02 to 27.2 mg·kg-1 fertilizer, the mean and median Cd contents in imported fertilizers were 3.20 and 0.41 mg·kg-1 fertilizer, respectively. And the Cu, Cr and Hg contents in the imported fertilizers were higher than that of domestic fertilizers, the mean contents of Cu, Cr and Hg in imported fertilizers were 39.4, 26.6 and 0.47 mg·kg-1 fertilizer, respectively.
[1] Luo L，Ma Y B，Zhang S Z，et al. Journal of Environmental Management，2009，90(8)：2524. [2] ZHANG Fu-dao(张夫道). Agro-Environmental Protection(农业环境保护)，1985，3：17. [3] LU Ru-kun，SHI Zheng-yuan，XIONG Li-ming(鲁如坤，时正元，熊礼明). Acta Pedologica Sinica(土壤学报)，1992，29(2)：150. [4] WANG Jing-guo(王敬国). Utilization and Pollution Control of Agrochemicals(农用化学物质的利用与污染控制). Beijing：Beijing Press(北京：北京出版社)，2001，140. [5] McLaughlin M J，Tiller K G，Naidu R，et al. Australian Journal of Soil Research，1996，34(1)：1. [6] Jeng A S，Singh B R. Plant and Soil，1995，175(1)：67. [7] LIU Shu-tang，ZHAO Yong-hou，SUN Yu-lin，et al(刘树堂，赵永厚，孙玉林，等). Journal of Soil Water Conservation(水土保持学报)，2005，19(1)：64. [8] CHEN Fang，DONG Yuan-hua，AN Qiong，et al(陈 芳，董元华，安 琼，等). Soils(土壤)，2005，37(3)：308. [9] REN Shun-rong，SHAO Yu-cui，GAO Bao-yan，et al(任顺荣，邵玉翠，高宝岩，等). Journal of Soil Water Conservation(水土保持学报)，2005，19(4)：96. [10] Mar S S，Okazaki M，Motobayashi T. Soil Science and Plant Nutrition，2012，58(4)：492. [11] Francois M，Grant C，Lambert R，et al. Nutrient Cycling in Agroecosystems，2009，83(2)：125. [12] Pérez A L，Anderson K A. Science of the Total Environment，2009，407(18)：5096. [13] Jafarnejadi A R，Sayyad G，Homaee M，et al. Environmental Monitoring and Assessment，2013，185(5)：4087. [14] De Vries W，McLaughlin M J. Science of the Total Environment，2013，461-462：240. [15] Cheraghi M，Lorestani B，Merrikhpour H，et al. Environmental Monitoring and Assessment，2013，185(2)：1825.
