分析化学
分析化學
분석화학
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
2001年
1期
77-79
,共3页
董学芝%艾天宗%赫海华%魏凌恒%赵海兰
董學芝%艾天宗%赫海華%魏凌恆%趙海蘭
동학지%애천종%혁해화%위릉항%조해란
催化电位滴定,铬鞣剂,铬(Ⅲ)
催化電位滴定,鉻鞣劑,鉻(Ⅲ)
최화전위적정,락유제,락(Ⅲ)
报道了以氨三乙酸存在下锰(Ⅱ)催化KIO4氧化结晶紫的反应指示终点，结晶紫电极作指示电极用催化电位滴定法测定铬鞣剂中Cr(Ⅲ)的方法。该法终点灵敏、准确度高、重现性好，结果满意，用标准加入法测得的平均回收率为100.03%，RSD为0.24%。
報道瞭以氨三乙痠存在下錳(Ⅱ)催化KIO4氧化結晶紫的反應指示終點，結晶紫電極作指示電極用催化電位滴定法測定鉻鞣劑中Cr(Ⅲ)的方法。該法終點靈敏、準確度高、重現性好，結果滿意，用標準加入法測得的平均迴收率為100.03%，RSD為0.24%。
보도료이안삼을산존재하맹(Ⅱ)최화KIO4양화결정자적반응지시종점，결정자전겁작지시전겁용최화전위적정법측정락유제중Cr(Ⅲ)적방법。해법종점령민、준학도고、중현성호，결과만의，용표준가입법측득적평균회수솔위100.03%，RSD위0.24%。
A method of catalytic potential titration for the deter minationof chromium(Ⅲ) by using crystal violet ion selective elect rode is reported. The experimenal result indicated that this method showed high sensitivity and high accuary. The method has been applied to the determination of chromium(Ⅲ) in tanning material of leather, and the determination result by this method was in agreement with that of oxidation-reduction titration.
