Patent ID: 7438853

Claim:
A photoelectrochemical detector comprising: a base ( 10 ) with a top, a front end, a rear end and sides, and having a recess ( 12 ) defined longitudinally in the top and extending to the front end; a cover ( 20 ) with a top, a bottom, a front end, a rear end and two sides, which is mounted pivotally on the base ( 10 ) and has a spacer with an inner open area attached to the bottom of the cover ( 20 ), and a light hole ( 22 ) and multiple channels defined through the cover ( 20 ) to communicate with the inner open area of the spacer, wherein a light source ( 55 ) is attached to the cover ( 20 ) to operatively communicate with light hole ( 22 ); a working electrode ( 50 ) mounted in the recess ( 12 ) and having a top face, an inner end, an outer end, and an inner lead ( 52 ) made of material with photoelectrochemical properties, wherein the inner lead ( 52 ) is attached on the top face of the working electrode ( 50 ) near the inner end and aligned with the light hole ( 22 ) when the cover ( 20 ) is closed, and wherein the working electrode is connected to an electricity source; and wherein the multiple channels are: an inlet ( 27 ) defined in the cover ( 20 ) on one side; a first outlet ( 24 ) defined in the cover ( 20 ) on the other side; and a second outlet ( 26 ) defined in the cover ( 20 ) on the same side as the first outlet ( 24 ); and wherein the device further has a reference electrode ( 30 ) corresponding to the first outlet ( 24 ); and wherein the device further has an auxiliary electrode ( 40 ) corresponding to the second outlet ( 26 ); and a locking device mounted between the base ( 10 ) and the cover ( 20 ) to attach the cover ( 20 ) to the base ( 10 ).