石墨炉原子吸收光谱法对果蔗地土壤镉和铅空间分布特征的研究

利用微波消解-石墨炉原子吸收光谱法测定果蔗地土壤中的镉和铅含量,验证检测方法的检出限、准确度与精密度,分析果蔗地土壤中重金属Cd和Pb的空间分布特征,并对果蔗地土壤中Cd和Pb的污染状况进行评价。结果表明:果蔗地土壤中Cd的含量范围为0.154~1.48 mg·kg-1,平均值为0.81 mg·kg-1;Pb的含量范围为11.5~51.8 mg·kg-1,平均值为30.4 mg·kg-1。Cd元素在土壤中变异系数较大,而Pb元素在土壤中变异系数较小。频数分布图显示,土壤中Cd元素含量不符合正态分布,含量大多在0.36~1.25 mg·kg-1之间,土壤中Pb元素含量基本符合正态分布,含量大多在...

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Published in西南农业学报 Vol. 29; no. 1; pp. 133 - 137
Main Author 王天顺 范业赓 牙禹 杨玉霞 何洁 廖洁 朱俊杰 莫磊兴
Format Journal Article
LanguageChinese
Published 农业部甘蔗品质监督检验测试中心(南宁),广西南宁530007 2016
广西农业科学院农产品质量安全与检测技术研究所,广西南宁530007
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ISSN1001-4829
DOI10.16213/j.cnki.scjas.2016.01.026

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Summary:利用微波消解-石墨炉原子吸收光谱法测定果蔗地土壤中的镉和铅含量,验证检测方法的检出限、准确度与精密度,分析果蔗地土壤中重金属Cd和Pb的空间分布特征,并对果蔗地土壤中Cd和Pb的污染状况进行评价。结果表明:果蔗地土壤中Cd的含量范围为0.154~1.48 mg·kg-1,平均值为0.81 mg·kg-1;Pb的含量范围为11.5~51.8 mg·kg-1,平均值为30.4 mg·kg-1。Cd元素在土壤中变异系数较大,而Pb元素在土壤中变异系数较小。频数分布图显示,土壤中Cd元素含量不符合正态分布,含量大多在0.36~1.25 mg·kg-1之间,土壤中Pb元素含量基本符合正态分布,含量大多在17.0~45.0 mg·kg-1之间。以绿色食品产地环境技术条件为评价依据,土壤Pb含量处于无污染的清洁水平,而土壤Cd的污染指数大于3的样点占总数的58.3%,处于重度污染水平,需要引起管理者和生产者的注意。
Bibliography:WANG Tian-shun;FAN Ye-geng;YA Yu;YANG Yu-xia;HE Jie;LIAO Jie;ZHU Jun-jie;MO Lei-xing ( 1. Research Institute of Agro-pmducts Quality Safety and Testing Technology, Gnangxi Academy of Agriculture Sciences, Guangxi Nanning 530007 ,China; 2. Quality Supervision and Testing center for Sugarcane, China Ministry of Agriculture, Guangxi Nanning 530007 ,China)
51-1213/S
Soil; Cd; Pb; Spatial distribution; Pollution evaluation; Atomic absorption spectrometry
Microwave digestion- graphite furnace atomic absorption spectrometry method was used to determine the concentrations of Cd and Pb in chewing cane soil. The detection limitation,accuracy and precision of the method were validated,the spatial distribution was analyzed,and the characteristics of Cd and Pb pollution in chewing cane soil were assessed. The results showed that the range of Cd concentration in soils is between 0. 154- 1. 48 mg·kg- 1,the average concentration is 0. 81 mg·kg- 1,the range of Pb concentration in soils is between 11. 5- 51. 8 mg · kg- 1,the aver
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2016.01.026