【摘 要】
：
When DCTA is used as the titrant,benzilic acid is a specific masking agent for Ti (IV).Using the DCTA-benzilic acid masicing method and spectrophotometric end
【出 处】
：
Chemical Journal of Chinese Universities
论文部分内容阅读
When DCTA is used as the titrant,benzilic acid is a specific masking agent for Ti (IV).Using the DCTA-benzilic acid masicing method and spectrophotometric end point,90 ppb of Ti can be [selectively titrated.Micro-quantities of Ti in quartz samples can be accurately titrated without prior seperation.We have found that malonic acid is a specific masking agent for Al.When it is used simultaneously with benzilic acid,Ti and Al or Ti,Al and Fe (II) can be titrated stepwise.
When the DCTA is used as the titrant, benzilic acid is a specific masking agent for Ti (IV). Using the DCTA-benzilic acid masicing method and spectrophotometric end point, 90 ppb of Ti can be [selectively titrated. Micro-quantities of Ti in We have found that malonic acid is a specific masking agent for Al. It is used with benzilic acid, Ti and Al or Ti, Al and Fe (II) can be titrated stepwise.
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