Continuous-Flow Analysis for Determination of Nitrate Using Hydrazine-Copper Method in Plan

Hydrazine-Copper 방법을 이용한 연속흐름제어장치를 통한 식물체의 nitrate 분석

  • Park, Yang-Ho (National Institute of Agricultural Science and Technology) ;
  • Park, So-Hyeon (National Institute of Agricultural Science and Technology) ;
  • Lee, Ju-Young (National Institute of Agricultural Science and Technology) ;
  • Jang, Byoung-Choon (National Institute of Agricultural Science and Technology) ;
  • Lee, Ki-Sang (National Institute of Agricultural Science and Technology)
  • Received : 2005.11.02
  • Accepted : 2006.02.05
  • Published : 2006.08.28

Abstract

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 $R^2=0.9671$, and those measured by CFA between those measured by RQflex method was $R^2=0.9739$. Recovery rate of nitrate added to tissue extract by CFA method was $99.7{\pm}0.25%$.

이연구의 목적은 연속흐름제어장치를 통한 식물체의 nitrate 분석방법 및 RQflex 방법 및 salicylic acid 방법과 비교를 통해 그 정확성을 확인하고자 함에 있다. 분석은 메론, 수박, 오이, 그리고 토마토 잎을 현장에서 채취 후, 분석시까지 초저온 냉동고에 보관후 분석하였다. RQflex로 측정한 결과가 CFA방법이나 salicylic acd 방법보다 약간 높게 나왔으며, CFA방법과 salicylic acid 방법과의 상관관계는 $R^2=0.9671$을 보였으며, RQflex와의 상관관계는 $R^2=0.9739$를 보였다.

Keywords

References

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