流动注射-化学发光流通池芯片及其在环境污染物测定中的应用(英文)  

ON-CHIP SPIRAL CHANNEL FLOW CELL FOR THE FLOW-INJECTION CHEMILUMINESCENCE AND ITS APPLICATIONS TO THE DETERMINATION OF THE POLLUTANTS IN ENVIRONMENT

作　　者：苏荣国[1] 吴菁京[1] 屈锋[1] 林金明[1] 

机构地区：[1]中国科学院生态环境研究中心,北京100085

出　　处：《环境化学》2003年第3期278-283,共6页Environmental Chemistry

基　　金：SupportedbyNSFC (No 2 0 1 2 5 5 1 4andNo 5 0 2 73 0 46)and 863Program ( 2 0 0 1AA63 0 5 0 3 )

摘　　要：An on chip spiral channel flow cell for flow injection chemiluminescent system was prepared. Microchannels were fabricated using standard photolithography, wet chemical etching and thermal bonding techniques. Due to the long spiral channel on the chip and the oblate trapezoid cross section, there was enough time for the chemiluminescent reagents and sample to mix and react completely. The light produced can be easy to be recorded. The present on chip flow cell was used for the determination of some organic pollutants with peroxomonosulfate cobalt(Ⅱ)chemiluminescent system and mangnese(Ⅱ)with periodate carbonate chemiluminescent system. The detection limits for humic acid, 2 naphthol, benzo thiazole and mangnese(Ⅱ)are 3 0×10 -7 g·g -1 , 2 0×10 -6 mol·l -1 and 5 0×10 -7 mol·l -1 using peroxomonosulfate cobalt(Ⅱ)chemiluminescent system, and 5 0×10 -9 mol·l -1 using periodate carbo nate chemiluminescent system(S/N=3), respectively. The application of this flow cell to determine manganese(Ⅱ)in well water is also carried. The results are satisfactory.An on chip spiral channel flow cell for flow injection chemiluminescent system was prepared. Microchannels were fabricated using standard photolithography, wet chemical etching and thermal bonding techniques. Due to the long spiral channel on the chip and the oblate trapezoid cross section, there was enough time for the chemiluminescent reagents and sample to mix and react completely. The light produced can be easy to be recorded. The present on chip flow cell was used for the determination of some organic pollutants with peroxomonosulfate cobalt(Ⅱ)chemiluminescent system and mangnese(Ⅱ)with periodate carbonate chemiluminescent system. The detection limits for humic acid, 2 naphthol, benzo thiazole and mangnese(Ⅱ)are 3 0×10 -7 g·g -1 , 2 0×10 -6 mol·l -1 and 5 0×10 -7 mol·l -1 using peroxomonosulfate cobalt(Ⅱ)chemiluminescent system, and 5 0×10 -9 mol·l -1 using periodate carbo nate chemiluminescent system(S/N=3), respectively. The application of this flow cell to determine manganese(Ⅱ)in well water is also carried. The results are satisfactory.

关 键 词：流动注射 化学发光流通池芯片 环境污染物 测定 应用 

分 类 号：X502[环境科学与工程—环境工程]