Convertibility of the Data Determined by ICP-AES and FAAS for Soil Available K and Na
ZHANG Jian-min1, WANG Meng1, GE Xiao-ping2, WU Jian-zhi3, GE Ying1*, LI Shi-peng1, CHANG Jie1
1. College of Life Sciences, Zhejiang University, Hangzhou 310058, China 2. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China 3. Analyzing and Testing Centre, Zhejiang University, Hangzhou 310028, China
Abstract：In recent years, inductively coupled plasma atomic emission spectrometry (ICP-AES) have been commonly used to determine the soil available K and Na with the extraction solution of HCl-H2SO4, while previous data of soil available K and Na were measured by flame atomic absorption spectrometry (FAAS) with the extraction solution of NH4OAc. In order to utilize previous data, quest for the convertibility of the data determined by ICP-AES and FAAS, and compare the data determined by both methods, the authors chose four types of soil to determine soil available K and Na by ICP-AES and FAAS, respectively. Four types of soil represent grit soil, clay, silt from river and silt from sea, respectively. Soil samples included four types of soil and these samples represent different soil nutrition. The authors analyzed the correlations of two kinds of measured data. The paired samples t-test proves that there was significantly positively correlation between these two methods. The correlation coefficient of the data between these two methods for measuring soil available K is 0.98. The results of soil available K determined by the two methods can be conversed through the formula, y=1.14x+6.53 (R2=0.91, n=24, p<0.001). As for Na, although there is a significantly positively correlation between these two methods, the slopes of single model of clay and grit soil were different from that of general model. And so the results determined by the two methods can be conversed through different formula according to the types of soil, that is, for clay: y=1.23x+10.03; for grit soil: y=3.12x-23.03; for silt: y=0.60x. In conclusion, the authors’ results showed that previous data of available K and Na measured by FAAS with the extraction solution of NH4OAc were available. And these data were comparable to the data measured by ICP-AES through definite formula. The authors’ results also suggested that ICP-AES was preferable when many elements were measured at the same time. Under this condition, ICP-AES was economical, efficient and reliable.
Key words：Extraction solution of HCl-H2SO4;Extraction solution of NH4OAc;Utility of historical data;ICP-AES
张建民1,王猛1,葛晓萍2,吴建之3,葛滢1*,李世鹏1,常杰1 . ICP-AES法与传统FAAS法测定土壤速效钾和钠的数据可转换性研究[J]. 光谱学与光谱分析, 2009, 29(05): 1405-1408.
ZHANG Jian-min1, WANG Meng1, GE Xiao-ping2, WU Jian-zhi3, GE Ying1*, LI Shi-peng1, CHANG Jie1 . Convertibility of the Data Determined by ICP-AES and FAAS for Soil Available K and Na. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(05): 1405-1408.
[1] BAO Shi-dan，et al(鲍士旦). Chemical and Agricultural Analysis of Soil (土壤农化分析). Beijing: China Agriculture Press(北京:中国农业出版社), 2005. 99. [2] GONG Xiao-feng, CHEN Chun-li, Barbara Zimmermann, et al(弓晓峰，陈春丽，Barbara Zimmermann，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2007, 27(1): 155. [3] GUO Yu-wen, PU Li-mei, QIAO Wei, et al(郭玉文，蒲丽梅，乔 玮，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(8): 1540. [4] TAN Shu-xiang, CAO Ling-jiang, LI Tian-rui(谭书香，曹玲江，李天瑞). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 1994, 14(5): 51. [5] FAN Hong-li, LIU Mi (范洪黎，刘 密). Soils and Fertilizers (土壤肥料), 2001, (5): 38. [6] HE Jia-qing, WANG Hu, YAN Rui-wen(何家庆，王 虎，严睿文). Journal of Instrumental Analysis(分析测试学报), 2003, 22(2): 92. [7] ZHANG Yu-feng, SHAO Chun-yan, ZHANG Xue-ying, et al(张宇峰，邵春燕，张雪英，等). Journal of Agro-Environment Science(农业环境科学学报), 2003, 22(6): 707. [8] LI Fang, YANG Xiu-huan, TANG Bao-ying, et al(李 芳，杨秀环，唐宝英，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2000, 20(4): 501. [9] LIU Ping-hui, RUI Yu-kui, YE Chang-sheng(刘平辉，芮玉奎，叶长盛). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2007, 27(12): 2575. [10] WU Dong-mei, CHEN Man-rong, QU Hai-yun, et al(吴冬梅, 陈满荣, 屈海云，等). Chinese Journal of Spectroscopy Laboratory(光谱实验室), 2006, 23(6): 170. [11] MA Jun, GUO Li-na, LIU Xiu-zhen(马 骏，郭丽娜，刘秀珍). Chinese Journal of Soil Science(土壤通报), 2006, 37(3): 620. [12] YUE Chunlei, CHANG Jie, GE Ying, et al. Fresenius Environmental Bulletin, 2004, 13(6): 505. [13] GAO Bo, GE Ying, LIU Qixia, et al. Fresenius Environmental Bulletin, 2006, 15(12): 1563. [14] LU Ru-kun, XIE Jian-chang, CAI Gui-xin, et al(鲁如坤，谢建昌，蔡贵信，等). Soil-Plant Nutriology: Principle and Fertilization(土壤-植物营养学原理和施肥). Beijing: Chemical Industry Press(北京:化学工业出版社), 1998. 30.
