Measuring of Cobalt Content in Sorghum (Sorghum bicolor (L.)Moench.) by Atomic Absorption Spectrophotometry

摘要

We measured cobalt content in sorghum (Sorghum bicolor (L.) Moench.) by atomic absorption spectrophotometry: their absorbance and back ground values. These analyses were with AA-680 of Shimadzu. The mode was BGC; wave length, 240.8 nm, 240.7 nm, 240.6 nm, respectively. The recommended wave length is 240.7 nm for Co analysis. It was done through several ratios among 4 factors; mean of absorbance (AM), standard deviation of absorbance (AS), mean of background(BM), standard deviation of background. (BS). The result was that 240.6 nm was the favourable. And that of 240.8 nm was better than that of 240.7 nm for the Co analysis.