1. Shandong Provincial Key Laboratory of Eco-Environmental Science for the Yellow River Delta, Binzhou University, Binzhou 256603, China 2. College of Resources and Environment, Shandong Agricultural University, Tai’an 271018, China 3. Key Laboratory of Land Use, Ministry of Land and Resources, China Land Surveying and Planning Institute, Beijing 100035, China 4. College of Resources and Environmental of Qingdao Agricultrual University, Qingdao 266109, China
Abstract：Aqua regia digestion, double channels-atomic fluorescence spectrometry method was used to determine the concentrations of As and Hg in orchard soils of Qixia City - the main apple production area of Shandong province. Validate The detection limitation, accuracy and precision of the method were validated, the spatial distribution was analyzed, and the characteristics of As and Hg pollution in Qixia orchard soils were assessed. The results showed that the range of As concentration in Qixia soils is between 2.79 and 20.93 mg·kg-1, the average concentration is 10.59 mg·kg-1, the range of Hg concentration in Qixia soil is between 0.01 and 0.79 mg·kg-1，the average concentration is 0.12 mg·kg-1. The variation of As concentration in soils is small, whereas that of Hg concentration is large. Frequency distribution graphics of As and Hg showed that the concentration of As in soils is according with the normal distribution approximately and the concentrations are mostly between 7 and 15 mg·kg-1, the concentration of Hg in soil isnt according with the normal distribution and the concentrations are mostly between 0.03 and 0.21 mg·kg-1. The correlations between the concentrations of As or Hg in soils and the nutrient are not significant and there is no significant correlation even between As and Hg. Based on the environmental technical terms for green food production area, the As concentration in orchard soil of Qixia City is at clean level, but there are 4.76% of sample points with Hg pollution index exceeding 1, and this should be attracted the attention of the administrators.
Key words：As and Hg;Orchard soil;Spatial distribution;Pollution evaluation;Atomic fluorescence spectrometry
赵西梅1，2，吕春艳3，刘 庆4，朱西存2* . 原子荧光光谱法对果园土壤中砷和汞空间分布特征的研究 [J]. 光谱学与光谱分析, 2014, 34(02): 538-541.
ZHAO Xi-mei1，2, Lü Chun-yan3，LIU Qing4, ZHU Xi-cun2* . Using Atomic Fluorescence Spectrometry to Study the Spatial Distribution of As and Hg in Orchard Soils . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(02): 538-541.
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