【摘要】 本文研究了水溶性有机试剂1-(2-吡啶偶氮-2-萘酚-磺酸(PAN-S)与金属离子反应的光度特性,对PAN-S作为络合滴定指示剂作了探讨,结果表明,由磺化PAN得到的PAN-S取代PAN用作金属指示剂具有实用价值。更多还原

【Abstract】 Analytical reactions ot a water-souluble organic reagent PAN-S with metal ions are studied spectrophotometrically. The reagent proved to be a good indicator for EDTA-titrations.The use of PAN-S, which can be obtained by means of simple sulfonation of PAN, as indicator instead of PAN was recommended.更多还原