Continuous-Flow Analysis for Determination of Nitrate Using Hydrazine-Copper Method in Plan
2006
Park, Y.H. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea), E-mail: [email protected] | Park, S.H. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Lee, J.Y. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Jang, B.C. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Lee, K.S. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea)
This study is to describe continuous-flow analysis (CFA) for the determination of nitrate using hydrazine-copper in plant material and to test precision of this method compared with that of methods, which are RQflex method and salicylic acid method. Samples were leaves of watermelon, cucumber, melon and tomato. Nitrate values measured by the RQflex method were greater than those measured by CFA or salicylic acid method. The correlation of nitrate values between those measured by CFA and salicylic acid method was R²=0.9671, and those measured by CFA between those measured by RQflex method was R²=0.9739.
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