摘要
本文以ＴＰＰＳ４、Ｔ（４－ＭＯＰ）ＰＳ４和Ｔ（４－ＭＰ）ＰＳ４为例，研究了Ａｇ·ｐｈｅｎ·ＰＰ光度法间接测定废水中痕量硫离子的有关条件。同时用上述三种卟啉试剂试验了Ｃｕ￣（２＋）、Ｈｇ￣（２＋）、Ｃｄ￣（２＋）、Ｐｂ￣（２＋）等软酸和交界酸间接测定Ｓ￣（２－）的可能性，结果表明，Ｈｇ－ＰＰ也可用于间接测定Ｓ（２－）。最后，对Ｈ＿２Ｓ的吸收液进行了筛选。
The complexes formed by water-soluble porphyrines with metal ions are proposed as reagents for the indirect determination of trace sulfides.The porphyrines involved are 5,10,15, 20-tetraphenyl-21H, 23H-porphine-p,p′,p〃p,p-tetrasulfonic acid(TPPS4),5,10,15,20-tetrakis(4-methoxyphenyl )-21H, 23H-porphine-m, m′,m〃,m-tetrasulfonic acid [T(4-MOP)PS4] and 5,10, 15, 20-tetrakis (4-methyl-phenyl)-21H, 23H-porphine-m,m′, m〃,m-tetrasulfonic acid[T(4-MP )PS4]. The above porphyrines were allowed to react with soft-acid and intermediate-acid metals,such as Cu(2+),Cd(2+),Ag(2+)and Hg(2+),in order to test their suitability as indirect reagents for sulfide determination. Our experiments showed that only the Ag-and Hg-complexes can be used for this purpose.The optimum conditions for sulfide determination are described. NaOH-TEA (triethanolamine)solutions were used for the absorption of hydrogen sulfide.
出处
《分析测试学报》
CAS
CSCD
1996年第2期58-61,共4页
Journal of Instrumental Analysis
基金
浙江省教委基金
关键词
卟啉
光度法
硫离子
废水
Porphyrines,Spectrophotometry,Sulfied ions.
