引用本文:
Zhen Yu Zhang, Wei An Liang. Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd(Ⅱ)-5-Br-PADAP-CPB[J]. Chinese Chemical Letters,
1997, 8(11): 983-984.
Citation: Zhen Yu Zhang, Wei An Liang. Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd(Ⅱ)-5-Br-PADAP-CPB[J]. Chinese Chemical Letters, 1997, 8(11): 983-984.
Citation: Zhen Yu Zhang, Wei An Liang. Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd(Ⅱ)-5-Br-PADAP-CPB[J]. Chinese Chemical Letters, 1997, 8(11): 983-984.
Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd(Ⅱ)-5-Br-PADAP-CPB
摘要:
By the use of CPB,Cd(Ⅲ) forms a highly sensitive complex with 5-Br-PADAP in aqueous solution,molar absorptivity ε is 1.21×1051.mol-1·cm-1.Trace amount of sulphide can be determined from its effect on the complex of Cd (Ⅲ)-5-Br-PADAP-CPB,sulphide in the range 0~3.2×10-6mol dm-3 causes a decrease in absorption,that is a linear function of the concentration.For 13ng cm-3 sulphide,common metal ions such as Na+,K+,Ca2+,Mg2+,Al3+ and anions such as CO32- (24μg cm-3),S2O32-(22μg cm-3),PO43-(20μg cm-3) etc.do not interfere.A method for the indirect determination of sulphide in beer and industrial waste water with good selectivity and accuracy is described.
English
Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd(Ⅱ)-5-Br-PADAP-CPB
Abstract:
By the use of CPB,Cd(Ⅲ) forms a highly sensitive complex with 5-Br-PADAP in aqueous solution,molar absorptivity ε is 1.21×1051.mol-1·cm-1.Trace amount of sulphide can be determined from its effect on the complex of Cd (Ⅲ)-5-Br-PADAP-CPB,sulphide in the range 0~3.2×10-6mol dm-3 causes a decrease in absorption,that is a linear function of the concentration.For 13ng cm-3 sulphide,common metal ions such as Na+,K+,Ca2+,Mg2+,Al3+ and anions such as CO32- (24μg cm-3),S2O32-(22μg cm-3),PO43-(20μg cm-3) etc.do not interfere.A method for the indirect determination of sulphide in beer and industrial waste water with good selectivity and accuracy is described.
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