借螯合滴定直接或间接滴定锆已有评述,但有关微量锆的报告不多。最近有用苏洛铬紫R(C.I.169)和苏洛铬黑6BN(C.I.201)作指示剂分别滴定低至10和20微克锆,其误差较大(分别为+8.0％及+6.0％)。为寻找更灵敏的螯合滴定微量锆的方法,故比较各种直接滴定锆的金属指示剂,卽棓菁(c.I.883)、埃铬菁R(c.I.722)、铬天蓝 Titration of zirconium by chelation titration, either directly or indirectly, has been reviewed but little is reported about trace zirconium. The most recent reports of the use of chromogen R (C.I.169) and chromogen 6BN (C.I.201) as an indicator for the titration of zirconium to 10 and 20 micrograms of zirconium respectively, showed relatively large errors (+ 8.0% and + 6.0%, respectively). In order to find a more sensitive chelation titration trace zirconium method, so compare various direct titration of zirconium metal indicator, Cyatocyanine (c.I.883), chromium cyanine R (c.I.722), chrome sky blue