公开(公告)号：US3853732A

公开(公告)日：1974-12-10

申请号：US24250772

申请日：1972-04-10

Applicant: TECHNICON INSTR

Inventor： BRAND A ,  RAO K

IPC: G01N27/401 ,  G01N27/416 ,  G01N27/46

CPC classification number: G01N27/4166

Abstract: A reference electrode structure for use in electrochemical measurements well adapted for inclusion in a compact unit including a cooperating ion-selective electrode, for liquid sample analysis of the continuous-flow type, and which reference electrode is of the open liquid junction type. The structure provides a straight-through path portion for the sample flowing in a stream and having at least substantially full circumferential exposure with an electrolyte or salt bridge of the reference electrode, which electrolyte flows in the aforementioned liquid junction. Use is not restricted to analysis of the continuous-flow type but includes analysis of the batch type.

Abstract translation: 用于电化学测量的参考电极结构，其很好地适于包含在包括协同离子选择性电极的紧凑单元中，用于连续流动型的液体样品分析，以及哪个参比电极是开放的液体结型。 该结构提供用于流动的样品的直通路径部分，并且具有参考电极的电解质或盐桥至少基本上完全周向曝光，该电解质在上述液体结中流动。 使用不限于连续流型的分析，而是包括对批次类型的分析。

公开(公告)号：US3840438A

公开(公告)日：1974-10-08

申请号：US24255672

申请日：1972-04-10

Applicant: TECHNICON INSTR

Inventor： RAO K ,  AST T ,  PELAVIN M

IPC: G01N27/416 ,  G01N33/483 ,  G01N35/08 ,  G01N27/46

CPC classification number: G01N35/08

Abstract: 1. A METHOD OF POTENTIOMETRIC ANALYSIS OF A SERIES OF LIQUID SAMPLES FOR A CONSTITUENT OF INTEREST UTILIZING A REFERENCE ELECTRODE AND A SENSING ELECTRODE HAVING AN ION-SELECTIVE SURFACE PORTION, SAID REFERENCE ELECTRODE AND SAID ION-SELECTION SURFACE PORTION OF SAID SENSING ELECTRODE DEFINING, IN PART, A FLOW-THRU CONDUIT, COMPRISING THE STEPS OF: FLOWING THE LIQUID SAMPLES SEQUENTIALLY IN A STREAM ALONG SAID CONDUIT; INTRODUCING GAS TO SEGMENT THE STREAM OF SAMPLE TO FORM GAS SEGMENTS INTERMEDIATE EACH SAMPLE AND ITS NEIGHBORING SAMPLES SO THAT EACH SAMPLE COMPRISES A LIQUID SEGMENT; PASSING SAID FLOWING STREAM ALONG SAID CONDUIT TO CONTACT SAID REFERENCE ELECTRODE AND SAID ION-SELECTIVE SURFACE PORTION OF SAID SENSING ELECTRODE WITH SAID SAMPLE LIQUID AND GAS SEGMENTS IN SAID FLOWING STREAM; LOCATING SAID ELECTRODES WITH RESPECT TO EACH OTHER SUCH THAT EACH SAMPLE LIQUID SEGMENT IN SAID STREAM BRIDGES SAID REFERENCE ELECTRODE AND SAID ION-SELECTIVE SURFACE PORTION OF SAID SENSING ELECTRODE; AND MEASURING THE ELECTRICAL POTENTIAL ACROSS SAID ELECTRODES FOR ANALYSIS OF SAID LIQUID SAMPLE SEGMENTS.

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