激光诱导击穿光谱结合标准加入法定量检测土壤中Cr

孟德硕; 赵南京; 刘文清; 方丽; 马明俊; 王寅; 余洋; 胡丽; 张大海; 王煜; 刘建国

doi:doi:10.3788/cjl201441.0715002

中国激光, 2014, 41 (7): 0715002, 网络出版: 2014-06-13

激光诱导击穿光谱结合标准加入法定量检测土壤中Cr

Quantitative Measurement of Cr in Soil Using Laser Induced Breakdown Spectroscopy Combined with Standard Addition Method

论文大纲

孟德硕 ^*赵南京刘文清方丽马明俊王寅余洋胡丽张大海王煜刘建国

作者单位

中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽合肥 230031

光谱学激光诱导击穿光谱标准加入法土壤铬定量检测 spectroscopy laser induced breakdown spectroscopy standard addition method soil Cr quantitative detection

摘要

利用激光诱导击穿光谱（LIBS）结合标准加入法对土壤中的Cr进行定量检测。以Cr 425.435 nm谱线为特征谱线，以Fe为内标元素，建立了土壤中Cr的定标曲线，确定在Cr质量分数低于250×10-6时，其特征谱线强度与其质量分数成线性关系，并由此求出土壤中Cr检测限为9.69×10-6，确定了标准加入法的检测范围。研究了5个外推点和单外推点的标准加入法，五点标准加入法对土壤中Cr的检测结果相对误差小于7%，单点标准加入法检测结果相对误差小于10%。基于单点标准加入法对同一土样进行5次检测，所得Cr质量分数的相对标准偏差（RSD）为4.66%，稳定性较好。实验结果证明LIBS结合标准加入法可以对土壤中的Cr进行较好的定量检测。

Abstract

Laser induced breakdown spectroscopy (LIBS) combined with the standard addition method is used to detect the Cr concentration in soil. With the Cr 425.435 nm line as the characteristic line and Fe as the internal standard element, the Cr calibration curve is established. Based on the fact that when the Cr mass fraction is below 250×10-6, the spectral intensity of characteristic line has a linear relationship with its mass fraction, the limit of detection is 9.69×10-6 and the detection range of the standard addition method is obtained. The standard addition methods with one and five extrapolated points are studied. For five-point standard addition method, the relative error of test results of Cr in soil is less than 7%. For one-point standard addition method, the relative error is less than 10%. Detect one soil sample by one-point standard addition method for five times, the relative standard deviation (RSD) of the test results is 4.66%, which is relatively stable. Experimental results show that LIBS combined with standard addition method can perform well in quantitative detection of Cr in soil.

参考文献

[1] G S Senesi, M Dell′Aglio, R Gaudiuso. Heavy metal concentrations in soils as determined by laser-induced breakdown spectroscopy (LIBS) with special emphasis on chromium[J]. Environmental Research, 2009, 109(4): 413-420.

[2] 许洪光, 管士成, 傅院霞, 等. 土壤中微量重金属元素Pb的激光诱导击穿光谱[J]. 中国激光, 2007, 34(4): 577-581.

Xu Hongguang, Guan Shicheng, Fu Yuanxia, et al.. Laser induced breakdown spectroscopy of the trace metal element Pb in soil[J]. Chinese J Lasers, 2007, 34(4): 577-581.

[3] 鲁翠萍, 刘文清, 赵南京, 等. 土壤中铜元素的激光诱导击穿光谱测量分析[J]. 光谱学与光谱分析, 2010, 30(11): 3132-3135.

Lu Cuiping, Liu Wenqing, Zhao Nanjing, et al.. Measurement and analysis of copper in soil using laser-induced breakdown spectroscopy[J]. Spectroscopy and Spectral Analysis, 2010, 30(11): 3132-3135.

[4] M Corsi, G Cristoforetti, M Hidalgo, et al.. Double pulse, calibration-free laser-induced breakdown spectroscopy: a new technique for in situ standard-less analysis of polluted soils[J]. Applied Geochemistry, 2006, 21(5): 748-755.

[5] 陈金忠, 白津宁, 宋广聚, 等. 激光诱导击穿光谱技术测定土壤中元素Cr和Pb[J]. 红外与激光工程, 2013, 42(4): 947-950.

Chen Jinzhong, Bai jinning, Song Guangju, et al.. Determination of Cr and Pb in soil by laser-induced breakdown spectroscopy[J]. Infrared and Laser Engineering, 2013, 42(4): 947-950.

[6] R T Wainner, R S Harmon, A W Miziolek W, et al.. Analysis of environmental lead contamination: comparision of LIBS field and laboratory instruments[J]. Spectrochimica Acta Part B, 2001, 56(6): 777-793.

[7] 黄基松, 陈巧玲, 周卫东. 激光诱导击穿光谱技术分析土壤中的Cr和Sr[J]. 光谱学与光谱分析, 2009, (11): 3126-3129.

Huang Jisong, Chen Qiaoling, Zhou Weidong. Laser induced breakdown spectroscopy for the determination of Cr and Sr in soil[J]. Spectroscopy and Spectral Analysis, 2009, (11): 3126-3129.

[8] 闫静, 丁蕾, 葛琳琳, 等. 液体射流激光击穿光谱检测重金属研究[J]. 中国激光, 2012, 39(2): 0215001.

Yan Jing, Ding Lei, Ge Linlin, et al.. Research about analysis of heavy metals in liquid jet by laser-induced breakdown spectroscopy[J]. Chinese J Lasers, 2012, 39(2): 0215001.

[9] 沈沁梅, 周卫东, 李科学. 激光诱导击穿光谱结合神经网络测定土壤中的Cr和Ba[J]. 光子学报, 2010, 39(12): 2134-2138.

Shen Qinmei, Zhou Weidong, Li Kexue. Determination of Cr and Ba in soil using laser induced breakdown spectroscopy with artificial neural networks[J]. Acta Photonica Sinica, 2010, 39(12): 2134-2138.

[10] 鲁翠萍, 刘文清, 赵南京, 等. 土壤重金属铬元素的激光诱导击穿光谱定量分析研究[J]. 物理学报, 2011, 60(4): 045206.

Lu Cuiping, Liu Wenqing, Zhao Nanjing, et al.. Quantitative analysis of chrome in soil samples using laser-induced breakdown spectroscopy[J]. Acta Physica Sinica, 2011, 60(4): 045206.

[11] 汪家升, 乔东坡, 陆运章, 等. 强度归一化法定量分析岩石激光诱导击穿光谱[J]. 中国激光, 2010, 37(1): 225-230.

Wang Jiasheng, Qiao Dongpo, Lu Yunzhang, et al.. Quantitative analysis of laser-induced breakdown spectroscopy in rocks by using normalization method[J]. Chinese J Lasers, 2010, 37(1): 225-230.

[12] M S Cheri, S H Tavassoli. Quantitative of toxic metals lead and cadmium in water jet by laser-induced breakdown spectroscopy[J]. Applied Optics, 2011, 50(9): 1227-1233.

[13] 国家环境保护局. 中国土壤元素背景值[M]. 北京: 中国环境科学出版社, 1990. 342-345.

China National Environmental Monitoring Centre. Background Value of Soil Element of China[M]. Beijing: China Environmental Science Press, 1990. 342-345.

孟德硕, 赵南京, 刘文清, 方丽, 马明俊, 王寅, 余洋, 胡丽, 张大海, 王煜, 刘建国. 激光诱导击穿光谱结合标准加入法定量检测土壤中Cr[J]. 中国激光, 2014, 41(7): 0715002. Meng Deshuo, Zhao Nanjing, Liu Wenqing, Fang Li, Ma Mingjun, Wang Yin, Yu Yang, Hu Li, Zhang Dahai, Wang Yu, Liu Jianguo. Quantitative Measurement of Cr in Soil Using Laser Induced Breakdown Spectroscopy Combined with Standard Addition Method[J]. Chinese Journal of Lasers, 2014, 41(7): 0715002.

激光诱导击穿光谱结合标准加入法定量检测土壤中Cr

关于本站 Cookie 的使用提示

全站搜索

激光诱导击穿光谱结合标准加入法定量检测土壤中Cr

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索