|
| Determination of Phenylalanine in Beverage by Using the Cu（Ⅱ）catalyzed Oscillating Chemical Reaction |
| |
| View Full Text Download reader |
| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:phenylalanine oscillating chemical reaction beverage determination |
| Author | Institution |
| 任杰，姬良亮，高锦章，刘艳君，杨武 |
西北师范大学化学化工学院 |
|
| Hits: 3363 |
| Download times: 1006 |
| Abstract: |
| The effects of D- and L-phenylalanine on the Cu（Ⅱ） catalyzed oscillating chemical reaction in an alkaline medium were investigated in this paper.The results showed that the changes of amplitude（ΔA） after adding D- and L-phenylalanine were different.The changes of the amplitude were linearly proportional to the negative logarithm concentration of D-phenylalanine in the range of 1.80×10-9-1.40×10-4 mol?L-1（r=0.996 3） with detection limit（LOD） of 2.69×10-11 mol?L-1,and for L-phenylalanine in the range of 1.80×10-6-1.80×10-4 mol?L-1（r=0.995 8） with detection limit of 2.61×10-7 mol?L-1.The proposed method was successfully used for the determination of L-phenylalanine in beverage and simulating water sample.The possible reaction mechanism was also discussed. |
| Close |