摘要
研究了水杨醛二缩乙二胺锰(Ⅱ)配合物为载体的阴离子选择性电极。结果表明,水杨醛二缩乙二胺锰(Ⅱ)配合物对SO_3^(2-)有较高的选择性,且电极呈现反Hofmeister行为,其选择性次序为SO_3^(2-)>I^->SCN^->ClO_4^->NO_2^->NO_3^->S_2O_3^(2-)>Cl^->SO_4^(2-)。该电极响应速度快,具有良好的稳定性。用于化学试剂中SO_3^(2-)的测定,相对标准偏差为0.42％。
The anion selective electrode based on N,N' -O- phenylenebissalicylideneimine complex of Mn( Ⅱ ) as carrier is studied. It showed that the electrode has high selectivity toward the sulfite ion and demonstrates anti-Hofmeister behaviour. The selectivity sequence observed is SO32- > I- > SCN- > ClO4- > NO2- > NO3- > S2O32- > Cl- > SO42-. The electrode has fast response time and good stability. The relative standard deviation is 0. 42% when appling it in the determination of sulfite ion in the chemical reagents.
出处
《化学分析计量》
CAS
2002年第1期36-37,39,共3页
Chemical Analysis And Meterage
