A Rapid Spectrometric Method for I he Determination of 1-Phenyl-3-pyrazolidone in Photographic Developers
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概要
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A new and rapid method for the determination of 1-phenyl-3pyrazolidone in used developers requiring only a small quantity of sample solution is based on the extraction of the 1-phenyl-3-pyrazolidone with chloroform in acid media and on the measurement of absorbancies in UV or IR region.<BR>The time required for the determination is 15-20 min.(UV) or 10 min.(IR).<BR>Of the two, the UV method is the mor eaccurate, the error being ±0.01g in determining 0.5g of 1-phenyl-3-pyrazolidone per litre.<BR>The IR method is advantageous in the circumstances where the presence in the extract of oxidation products of the developing agent and/or sulphur dioxide interferes with the determination by the UV method; in the IR region, their absorption bands apear separated from that of 1-phenyl-3-pyrazolidone and hence cause no trouble.
- 社団法人 日本写真学会の論文
社団法人 日本写真学会 | 論文
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