TY - JOUR
T1 - An Improved Extractor for Dual-Flow Extraction
AU - Nishizawa, Hideyuki
AU - Watanabe, Yukako
AU - Okimura, Sakiko
AU - Abe, Yoshihiro
PY - 1989
Y1 - 1989
N2 - An improved apparatus for dual-flow countercurrent extraction was constructed. Further, a simple method to evaluate the extractor was developed, by which the effective plate number could be calculated by a couple of measurements of fractional recoveries. To find the optimum operation condition, an apparatus with a shorter column (10 cm in length) was prepared, the efficiency of which was evaluated as being about one plate per cm of the column length by the method. It was also shown that the distribution constant of a compound could be calculated from the fractional recoveries measured by dual-flow countercurrent extraction. The distribution constants, thus obtained, agreed with values determined independently by liquid-liquid chromatography, which settled theoretical correlations between chromatography and extraction.
AB - An improved apparatus for dual-flow countercurrent extraction was constructed. Further, a simple method to evaluate the extractor was developed, by which the effective plate number could be calculated by a couple of measurements of fractional recoveries. To find the optimum operation condition, an apparatus with a shorter column (10 cm in length) was prepared, the efficiency of which was evaluated as being about one plate per cm of the column length by the method. It was also shown that the distribution constant of a compound could be calculated from the fractional recoveries measured by dual-flow countercurrent extraction. The distribution constants, thus obtained, agreed with values determined independently by liquid-liquid chromatography, which settled theoretical correlations between chromatography and extraction.
KW - Dual-flow countercurrent extraction
KW - Extractor
KW - Liquid particle chromatography
KW - Liquid particle extraction
UR - http://www.scopus.com/inward/record.url?scp=84996282229&partnerID=8YFLogxK
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U2 - 10.2116/analsci.5.339
DO - 10.2116/analsci.5.339
M3 - Article
AN - SCOPUS:84996282229
VL - 5
SP - 339
EP - 343
JO - Analytical Sciences
JF - Analytical Sciences
SN - 0910-6340
IS - 3
ER -