常用电极参数    Specifications of Electrodes

 

电极

辅助结构

技术类型

使用量程

温度/pH

干扰

Ammonia

 (NH3)

CPT4

Gas sensing

5 x 10-7 to 1.0 M

(0.01 to 17,000 ppm)

0 to 50/

above 11

Volatile amines

Ammonium

 (NH4+)

CPT1-4

PVC membrane

5x10-6tol.0M

(0.1 to 18,000 ppm)

0 to 50/

4 to 10

K+

Bromide

(Br-)溴离子

CPT1-4

Solid-state

5 x 10-6 to 1.0 M

(0.4 to 79,900 ppm)

0 to 80/

2 to 14

S-2,I-, CN-; high levels of Cl-and NH3

Cadmium

(Cd+2)镉离子

CPT1-4

Solid-state

10-7 to 10-1 M

(0.01 to 11,200 ppm)

0 to 80/

2 to 12

Ag+, Hg+2, Cu+2; high levels of Pb+2 and Fe+2

Calcium

(Ca+2)钙离子

CPT1-4

PVC membrane

5 x 10-6 to 1.0 M

(0.2 to 40,000 ppm)

0 to 50/

3 to 10

Pb+2, Hg+2, Cu+2, Ni+2

CO2/CO3-2

二氧化碳/碳酸根

CPT4

Gas sensing

10-4 to 10-2 M

(4.4 to 440 ppm)

0 to 50/

4.8 to 5.2

Volatile weak acids

Chloride (Cl-)

氯离子

CPT1-4

Solid-state

5 x 1 0-5 to 1.0 M

(1.8 to 35,500 ppm)

0 to 80/

2 to 12

S-2,I-, CN-, Br-,OH-, NH3, S2O3-2

Chlorine (Cl2)

CPT1-4

Solid-state

5 x 1 0-5 to 1.0 M

(1.8 to 35,500 ppm)

0 to 60/

2 to 12

 

Chlorine (Cl2)

CPT1-4

Solid-state

3 x 1 0-6 to 0.1 M

(0.02 to 3,550 ppm)

0 to 60/

2 to 12

 

Per-Chlorinate (CIO4-1) 高氯酸根

CPT1-4

PVC membrane

5 x 1 0-6 to 10-1 M

(0.5 to 99,500 ppm)

0 to 60/

2 to 12

 

Copper (Cu+2)

铜离子

CPT1-4

Solid-state

10-8 to 10-1 M

(0.0006to 6350ppm)

0 to 80/

2 to 12

Ag+, Hg+2, high levels of Cl-, Br-, Fe+2, Cd+2

Cyanide (CN-)

氰根

CPT1-4

Solid-state

5 x 10-6 to 10-2 M

(0.1 to 260 ppm)

0 to 80/

11 to 13

S-2, I-, Br-, Cl-

Ferrous (Fe+2-)

 亚铁离子

CPT1-4

Solid-state

7 x 10-6 to 10-2 M

(0.4 to 560 ppm)

0 to 60/

11 to 13

 

Fluoride (F-)

氟离子

CPT1-4

Solid-state

10-6 to saturated

(0.02 to saturated)

0 to 80/

5 to 8

OH-

Fluoroborate

 (BF4-)氟硼酸根

CPT1-4

PVC membrane

7 x 10-6 to 1.0 M

(0.1 to10,800ppm as B)

0 to 50/

2.5 to 11

ClO4-, I-, CN-

Hydrogen Sulfide (H2S)硫化氢

CPT4

Gas sensing

10-5  to 10-1M

(0.3 to 3,300ppm)

0 to 60/

 

Iodide (I-)

碘离子

CPT1-4

Solid-state

5x10-6 to l.0M

(0.006 to 127,000 ppm)

0 to 80/

0 to 14

S-2,CN-,Br-,Cl-,NH3, S2O3-2

Lead (Pb+2)

铅离子

CPT1-4

Solid-state

10-1~5x10-7 M

(0.01 to 20,700 ppm)

0 to 80/

3 to 8

Ag+2, Hg+2, Cu+2, high levels of Cd+2 and Fe+2

Lithium (Li+)

锂离子

CPT1-4

PVC membrane

10-6 tol.0M

(0.7 to 6900 ppm)

0 to 50/

5 to 10

Na+, K+,Ca+2

Mercaptan(SH-)

硫醇根

CPT1-4

PVC membrane

0.003 to 3 ppm

0 to 50/

5 to 10

Na+, K+,Ca+2

Nitrate (N03-)

硝酸根

CPT1-4

PVC membrane

7 x 10-6 to 1.0 M

(0.5 to 62,000 ppm)

0 to 50/

2.5 to 11

ClO4-, I-, CN-, BF4-

Nitrite (N02-)

亚硝酸根

CPT1-4

PVC membrane

5 x 10-6 to 1.0 M

(0.2 to 46,000 ppm)

0 to 50/

2.5 to 11

 

Nitrogen oxide

 (NOx)氮氧化物

CPT4

Gas sensing

5x10-6to5xl0-3M

(0.2 to 220 ppm)

0 to 50/

1.1 to 1.7

CO2, SO2 HF, acetic acid

Perchlorate

 (ClO4-)高氯酸根

CPT1-4

PVC membrane

7 x 10-6 to 1.0 M

(0.7 to 98,000 ppm)

0 to 50/

2.5 to 11

No significant 

interferences

pH (H+)

CPT1-4

PVC membrane

10-7 to 10-1 M

(1 to 7 pH)

0 to 50/

1 to 7

No significant  pH interferences

Potassium

 (K+) 钾离子

CPT1-4

PVC membrane

10-6 to 1.0 M

(0.04 to 39,000 ppm)

0 to 50/

2 to 12

Cs+, NH4+

Silver/sulfide

(Ag+/S-2)/硫离子

CPT1-4

Solid-state

10-7 to l.0 M(Ag+,S-2)

(0.01to107,900ppmAg+;

0.003 to 32,100 ppm S-2)

0 to 80/

2 to 12

Hg+2

Sodium (Na+)

钠离子

CPT1-4

Glass

membrane

10-6 M to saturated

(0.02 ppm to saturated)

0 to 80/

5 to 12

H+, K+, Li+, Ag+,Cs+, TI+

Surfactant

(X+/X-)活性剂

CPT1-4

PVC membrane

10-5 to 5 x 10-2 M

(1.0 to 12,000 ppm)

0 to 50/

2 to 12

Similar types of surfactants

Thiocyanate (SCN-)硫氰酸根

CPT1-4

Solid-state

5 x 10-6 to 1.0 M

(0.3 to 58,000 ppm)

0 to 80/

2 to 10

S-2, CN-, I-, Br-,NH3, S2O3-2

Optimal pH range for direct measurement.   These ions are listed in order of decreasing concentrations of interference.

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