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fu jian : yi shuang liu zuo fa ce ding wei liang xin
Pages: 36-37
Year: Issue:  4
Journal: FAJIAO KEJI TONGXUN

Keyword:  四氯化碳双硫腙光密度浓度范围分光光度测定标准曲线萃取锌离子锌络合物比耳定律;
Abstract: <正> Ⅰ.原理: 在酸性解质中,双硫腙和锌离子反应生成红色的络合物,可被四氯化碳萃取,其反应: 2C6H5-NH-NH-CS-N=N-C6H5+Zn++——→ (C6H5-N-NH-C5=N-N-C6H52 Zn+2H+ 双硫腙——锌络合物在波长为520Mμ处出现最大吸收,且当含Zn++在一定的浓度范围内,浓度和光密度之间的关系遵守比耳定律,可用于锌的分光光度测定。方法灵
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