Analytical studies on pyrimidine derivatives. VI. Sensitive spectrophotometric determination of gold(III) by solvent extraction with 5-p-dimethylaminocinnamylidene-1-phenyl-2-thiobarbituric acid.
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A sensitive spectrophotometric method for the determination of gold (III) with 5-p-dimethylaminocinnamylidene-1-phenyl-2-thiobarbituric acid (DACTB) is described. DACTB reacts easily with gold (III), forming a blue complex in diluted hydrochloric acid which can be extracted with chloroform. The chloroform solution of the complex has an absorption maximum at 622 nm against a reagent blank and shows a constant absorbance over the final hydrochloric acid concentration range of 0.02-0.07 M. Beer's law holds over the range of 0.1-0.9 μg/ml of gold (III) at 622 nm. The molar extinction coefficient of the complex is 1.1×105·l·mol-1·cm-1. The coefficient of variation was 1.34% for 0.5 μg/ml of gold (III). The coexistence of cations such as Pd (II), Fe (II), Ce (IV), and Mn (VII) interfered considerably with the determination.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 29 (6), 1755-1758, 1981
公益社団法人 日本薬学会
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詳細情報
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- CRID
- 1390001204167749632
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- NII論文ID
- 110003633892
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- NII書誌ID
- AA00602100
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- COI
- 1:CAS:528:DyaL3MXltVOqt70%3D
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- ISSN
- 13475223
- 00092363
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可