Browse > Article

Development of Extracting Solution for Soil Chemical Analysis Suitable to Integrated Ion-selective Micro-electrodes  

Shin, Kook-Sik (College of Agriculture & Life Sciences at Hankyong Nat'l Univ.)
Lim, Woo-Jin (College of Agriculture & Life Sciences at Hankyong Nat'l Univ.)
Lee, Sang Eun (College of Agriculture & Life Sciences at Hankyong Nat'l Univ.)
Lee, Jae Seon (Department of Chemistry Kwangwoon Univ.)
Cha, Geun Sig (Department of Chemistry Kwangwoon Univ.)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.42, no.6, 2009 , pp. 513-521 More about this Journal
Abstract
The primary goal of this research was to develop an optimized analytical procedure for soil analysis based on ion-selective microelectrodes for agricultural purposes, which can perform on-site measurement of various ions in soil easily and rapidly. For the simple and rapid on-site diagnosis, an analysis of soil chemicals was performed employing a multicomponent-in-situ-extractant and an evaluation of ionselective microelectrodes were conducted through the regressive correlation method with a standard analytical approach widely employed in this area. Examination of sensor responses between various soil nutrient extractants revealed that 0.01M HCl and 1M LiCl provided the most ideal Nernstian response. However, 1M LiCl deteriorated the selective response for analytes due to high concentration (1M) of lithium cation. Thus, employing either 0.1M HCl as an extractant followed by 10 times dilution, or 0.01M HCl as an extractant without further dilution was chosen as the optimal extractant composition. A study of regressive correlation between results from ion-selective microelectrodes and those from the standard analytical procedure showed that analyses of $K^+$, $Na^+$, $Ca^{2+}$, and $NO_3{^-}$ showed the excellent consistency between two methods. However, the response for $NH_4{^+}$ suffered the severe interference from $K^+$. In addition, the selectivity for $Mg^{2+}$ over $Ca^{2+}$ was not sufficient enough since available ionophores developed so far do not provide such a high selectivity for $Mg^{2+}$. Therefore, as an agricultural on-site diagnostic instrument, the device in development requires further research on $NH_4{^+}$ analysis in the soil sample, development of $Mg^{2+}$-selective ionophore, and more detailed study focused on potassium, one of the most important plant nutrients.
Keywords
ISE; Ion selective electrode; Soil chemical analysis; Extractant; Nitrate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Kim, M. S., J. H. Yoon J. H., and H. K. Kwak. 2004. Selection of simultaneous soil extracting method for soil analysis to apply for ICP. p. 301-307 in Annual Report of National Institute of Agricultural Science and Technology.(in Korean)
2 National Institute of Agricultural Science and Technology. 2000. Soil Analytical Methods.(in Korean)
3 Benjamin wolf. 1982. An improved universal extracting solution and its use for diagnosing soil fertility. Commun. soil Sci. Plant Anal. 13(12): 1005-1033   DOI   ScienceOn
4 Lee, H. L. 1986. Ion-selective electrodes. The Magazine of the IEEK 13(1): 36-43(한국어)
5 Mehlich, A 1978 New Extraction for soil test evaluation of phosphorus, potassium, magnesium, calcium, sodium, manganese and zinc, Commun. Soil Sci. Plant Anal. 9(6): 477-492   DOI
6 Mehlich, A. 1984. Mehlich III soil test extractant : A modification of Mehlich II extractant. Commun. Soil Sci. Plant Anal. 15(12):1409-1416   DOI
7 Morf, W. E. 1981. The principles of ion-selective electrodes and of membrane transport. Elsevier Science Publishing Co. Amsterdam
8 Morgan, M. F. 1941. Chemical soil diagnosis by the universal soil testing system. Conn. Agric. Sta. Bul. 450
9 Daniel C. Harris. 1997. Quantitative Chemical Analysis. Freedom Academy Publishing. Co., pp. 393-396
10 Hong S. D. and H. -T. Park. 2000. The test strip reflectometer method as a quick test procedure for soil nitrate nitrogen. Kor. J.Soil Sci. & Fert. 33(5): 369-375
11 Wang, J. 2002. Portable electrochemical systems. Trends in Anal.Chem. 21(4): 226-232   DOI   ScienceOn
12 Bakker, E. and Q. Yu. 2006. Electrical sensors. Analytical Chemistry. 78(12): 3965-3983   DOI   ScienceOn
13 McIntosh, J. L. 1969. Bray and Morgan Soil test extractants modified for testing acid soils from different parent material.Agron. J. 61: 259-265   DOI
14 Lee, S. E. and Cha, G. S. 2006. Micro-chemical sensors for determining the agricultural water quality. International Symposium for Water Management, KSAE pp. 111-130
15 Adamchuk, V. I., J. W. Hummel, M. T. Morgan, and S. K.Upadhyaya. 2004. On-the-go soil sensors for precision agriculture. Computers and Electronics in Agriculture. 44: 71-91   DOI   ScienceOn
16 Kim, I. J., J. W. Hummel, and S. J. Birrel. 2006. Evaluation of nitrate and potassium ion-selective membranes for soil macronutrient sensing. Trans. ASABE 49(3): 597-606   DOI
17 Kim, M. S., T. S. Park, and S. I. Cho. 2007. Application of Ionselective electrodes to measure ionic concentration of macronutrients in Hydrophonics. J. of Biosystems Eng. 32(1): 37-43.(in Korean)   DOI
18 Bakker, E., E. Pretsch, and P. Buhlmann. 2000. Selectivity of potentiometric ion sensors. Anal. Chem. 72(6): 1127-1133   DOI   ScienceOn
19 정종배 등. 2006. 토양학. 향문사. pp. 192-193.
20 Artigas, J., A. Beltran, C. Jimenez, A. Baldi, R. Mas, C. Dominguez, and J. Alonso. 2001. Computers and Electronics in Agriculture.31: 281-293   DOI   ScienceOn
21 Mehlich, A. 1953. Determination of P, Ca, Mg, K, Na and NH4. North Carolina Soil Testing Division(Mimeo), Releigh, N. C.
22 Shim, J. H., I. S. Jeong, M. H. Lee, H. P. Hong, J. H. On, K. S. Kim,H. -S, Kim, B. H. Kim, G. S. Cha, H. Nam. 2004. Ion-selective electrodes based on molecular tweezer-type neutral carriers.Talanta. 63: 61-71   DOI   ScienceOn