激光与光电子学进展, 2013, 50 (5): 053002, 网络出版: 2013-04-16   

激光诱导击穿光谱检测赣南脐橙种植土壤的Cu和Cr 下载: 531次

Detection of Cu and Cr in the Soil of Navel Orange Plantation in Gannan by LIBS
作者单位
江西农业大学生物光电及应用实验室, 江西 南昌 330045
摘要
将激光诱导击穿光谱(LIBS)技术应用于对赣南大面积脐橙种植地土壤中重金属元素的快速检测。对采自赣南信丰县和安远县内16个不同地区的土壤样品进行激光诱导击穿光谱实验和原子吸收光谱实验,检测其中的Cu和Cr。通过特征光谱强度、信背比和真实浓度的比较可知,Cu和Cr两种重金属元素在土壤中的浓度分别为3.179 μg/g、6.524 μg/g时,在激光诱导击穿光谱检测中的特征光谱强度非常明显,检测的相对标准偏差(RSD)值都在10%左右。但在定量分析上,需在消除基体效应上做深入的实验探讨并在数据处理上寻找新的方法。
Abstract
In order to detect the heavy metal in the soil of navel orange plantation land in Gannan based on laser induced breakdown spectroscopy (LIBS), LIBS and atomic absorption experiments are performed on the samples collected from 16 different areas in Xinfeng an Anxi county of Gannan to detect the Cu and Cr elements. From the information of spectral intensity, signal to background ratio and real concentrations of Cu and Cr in different areas, the lowest concentration of Cu and Cr in the soil gained in atomic absorption experiment are 3.179 μg/g and 6.524 μg/g, respectively, while their spectral intensities in elements are both very obvious. And the relative standard deviation (RSD) in LIBS are all around 10%. However, in-depth experimental study to eliminate matrix effects and new methods for data processing should be done for quantitative analysis.
参考文献

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林永增, 姚明印, 陈添兵, 黎文兵, 郑美兰, 刘木华. 激光诱导击穿光谱检测赣南脐橙种植土壤的Cu和Cr[J]. 激光与光电子学进展, 2013, 50(5): 053002. Lin Yongzeng, Yao Mingyin, Chen Tianbing, Li Wenbing, Zheng Meilan, Liu Muhua. Detection of Cu and Cr in the Soil of Navel Orange Plantation in Gannan by LIBS[J]. Laser & Optoelectronics Progress, 2013, 50(5): 053002.

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