Recently, the cadmium of paddy-rice and the heavy metals of the soils have become an important issue in Japan.  In particular, land pollution investigation must be conducted more rapidly.  In the official methods, a water dissolution test for 24 hrs is used.  Quantitative analysis of heavy metals is performed by Atomic Absorption Spectrophotometry (AAS) or Inductively Coupled Plasma spectroscopy (ICP).  However, it takes several days until preliminary treatment and the measurement results are available.  In this study, we compared the official method using AAS or with our new quick heavy metal measuring system based on voltammetry method.  Then we considered whether analysis of cadmium on paddy-rice investigation was possible.  As for the measurement of heavy metals by microcartridge type electrochemistry analysis machine, measurement was possible in lower than 10ppb which was Japanese reference value easily, and manipulation was simple and easy.

Rapid analysis assessment of the paddy-rice and soils

243rd National Meeting (2012)

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